API, Data & ML

• Abstract API

  API suite for various use cases, including IP geolocation, phone number validation, or email validation.

  https://www.abstractapi.com

• AlphaAI

  Financial news API and MCP server. Every article gets per-ticker impact analysis, a category, and a 1-10 relevance score, and SEC Form 4 insider filings are turned into scored events. The free tier includes 20 requests per minute and 100 requests per day on both REST and MCP, no card required.

  https://alphai.io/developers

• AnyHook

  Inbound webhook relay: point a Stripe, GitHub or LINE bot webhook at it and it stores each event before delivering to your handler, retries automatically when your endpoint is down, and keeps a log you can replay from. Endpoints can be created from the API with no account. Free plan includes 3,000 events/month, 1 app, 3 retries and 3 days of retention, no credit card.

  https://anyhook.net

• Apify

  Web scraping and automation platform to create an API for any website and extract data. Ready-made scrapers, integrated proxies, and custom solutions. Free plan with $5 platform credits included every month.

  https://www.apify.com/

• APITemplate.io

  Auto-generate images and PDF documents with a simple API or automation tools like Zapier & Airtable. No CSS/HTML is required. The free plan comes with 50 images/month and three templates.

  https://apitemplate.io

• APIVerve

  Get instant access to over 120+ APIs for free, built with quality, consistency, and reliability in mind. The free plan covers up to 50 API Tokens per month. (Possibly taken down, 2025-06-25)

  https://apiverve.com

• Arize AI

  Machine learning observability for model monitoring and root-causing issues such as data quality and performance drift. Free up to two models.

  https://arize.com/

• Beeceptor

  No-code, cloud-based platform for mocking and debugging multi-protocol APIs (REST, SOAP, gRPC & GraphQL), providing instant servers with rules-based logic, CRUD & stateful mocking, proxying, and CORS management for faster integration and testing. The free plan includes 50 requests per day and provides a public dashboard/endpoint where anyone with the dashboard URL can view submitted requests and responses.

  https://beeceptor.com

• BigDataCloud

  Provides fast, accurate, and free (Unlimited or up to 10K-50K/month) APIs for modern web like IP Geolocation, Reverse Geocoding, Networking Insights, Email and Phone Validation, Client Info and more.

  https://www.bigdatacloud.com/

• Brave Search API

  Independent web, news, image, video search and AI/LLM context API, suitable for RAG pipelines and AI agents. Free tier includes $5 in monthly credits (credit card required for verification).

  https://brave.com/search/api/

• Browse AI

  Extracting and monitoring data on the web. 1k credits per month for free, equals 1k concurrent requests.

  https://www.browse.ai

• Calendarific

  Enterprise-grade Public holiday API service for over 200 countries. The free plan includes 500 calls per month.

  https://calendarific.com

• Canopy

  GraphQL API for Amazon.com product, search, and category data. The free plan includes 100 calls per month.

  https://www.canopyapi.co/

• CarAPI.dev

  Comprehensive automotive data API with VIN decoding, stolen vehicle checks, vehicle valuation, inspection data, and more. Free tier includes 100 requests/month across all 9 endpoints.

  https://carapi.dev

• CatchDoms

  Aggregator of expired and dropping domain listings from 16 marketplaces, with SEO enrichment (backlinks, Trust Flow, Wayback history) and a quality score. Free plan: 10 unlocked listings, 5 favorites, 3 saved searches. 7-day Pro trial on signup includes full REST API and MCP server access.

  https://catchdoms.com

• Cloudmersive

  Utility API platform with full access to expansive API Library including Document Conversion, Virus Scanning, and more with 600 calls/month, North America AZ only, 2.5MB maximum file size.

  https://cloudmersive.com/

• Colaboratory

  Free web-based Python notebook environment with Nvidia Tesla K80 GPU.

  https://colab.research.google.com

• CometML

  The MLOps platform for experiment tracking, model production management, model registry, and complete data lineage, covering your workflow from training to production. Free for individuals and academics.

  https://www.comet.com/site/

• Commerce Layer

  Composable commerce API that can build, place, and manage orders from any front end. The developer plan allows 100 orders per month and up to 1,000 SKUs for free.

  https://commercelayer.io

• Composio

  Integration platform for AI Agents and LLMs. Integrate over 200+ tools across the agentic internet.

  https://composio.dev/

• Conversion Tools

  Online File Converter for documents, images, video, audio, and eBooks. REST API is available. Libraries for Node.js, PHP, Python. Support files up to 50 GB (for paid plans). The free tier is limited by file size (20MB) and number of conversions (30/Day, 300/Month).

  https://conversiontools.io/

• Country-State-City Microservice API

  API and Microservice to provides a wide range of information including countries, regions, provinces, cities, postal codes, and much more. The free tier includes up to 100 requests per day.

  https://country-state-city.rebuscando.info/

• Coupler

  Data integration tool that syncs between apps. It can create live dashboards and reports, transform and manipulate values, and collect and back up insights. The free plan is limited to one user, data connection, data source, and data destination. Also requires manual data refresh.

  https://www.coupler.io/

• CraftMyPDF

  Auto-Generate PDF documents from reusable templates with a drop-and-drop editor and a simple API. The free plan comes with 100 PDFs/month and three templates.

  https://craftmypdf.com

• Cube

  Cube helps data engineers and application developers access data from modern data stores, organize it into consistent definitions, and deliver it to every application. The fastest way to use Cube is with Cube Cloud, which has a free tier limited to 1,000 queries per day.

  https://cube.dev/

• CurlHub

  Proxy service for inspecting and debugging API calls. The free plan includes 10,000 requests per month.

  https://curlhub.io

• CurrencyScoop

  Realtime currency data API for fintech apps. The free plan includes 5,000 calls per month.

  https://currencyscoop.com

• CustomJS

  HTML to PDF or PDF to PNG/Text & PDF merging/extraction/merging APIs. Free tier has 600 calls a month.

  https://www.customjs.io

• Data Fetcher

  Connect Airtable to any application or API with no code. Postman-like interface for running API requests in Airtable. Pre-built integrations with dozens of apps. The free plan includes 100 runs per month.

  https://datafetcher.com

• Data Miner

  A browser extension (Google Chrome, MS Edge) for data extraction from web pages CSV or Excel. The free plan gives you 500 pages/month.

  https://dataminer.io/

• Dataimporter.io

  Tool for connecting, cleaning, and importing data into Salesforce. Free Plan includes up to 20,000 records per month.

  https://www.dataimporter.io

• Datalore

  Python notebooks by Jetbrains. Includes 10 GB of storage and 120 hours of runtime each month.

  https://datalore.jetbrains.com

• DB Designer

  Cloud-based Database schema design and modeling tool with a free starter plan of 2 Database models and ten tables per model.

  https://www.dbdesigner.net/

• DB-IP

  Free IP geolocation API with 1k request per IP per day.lite database under the CC-BY 4.0 License is free too.

  https://db-ip.com/api/free

• DeepAR

  Augmented reality face filters for any platform with one SDK. The free plan provides up to 10 monthly active users (MAU) and tracks up to 4 faces

  https://developer.deepar.ai

• Deepnote

  A new data science notebook. Jupyter is compatible with real-time collaboration and running in the cloud. The free tier includes unlimited personal projects, unlimited basic machines with 5GB RAM and 2vCPU, and teams with up to 3 editors.

  https://deepnote.com

• Compare JSON

  An online tool for comparing differences between two JSON data structures, helping you quickly locate the differences in JSON data.

  https://comparejson.com

• Disease.sh

  A free API providing accurate data for building the Covid-19 related useful Apps.

  https://disease.sh/

• Doczilla

  SaaS API empowering the generation of screenshots or PDFs directly from HTML/CSS/JS code. The free plan allows 250 documents month.

  https://www.doczilla.app/

• Doppio

  Managed API to generate and privately store PDFs and Screenshots using top rendering technology. The free plan allows 400 PDFs and Screenshots per month.

  https://doppio.sh/

• DocPenny

  HTML to PDF document generation with templates, webhook delivery, and credit-based pricing. Free plan with 50 monthly credits, no credit card required.

  https://docpenny.com

• Doqlo

  Bulk fill and mail merge PDF forms from CSV using the web app or Public API. The free plan includes 100 output PDFs/month.

  https://doqlo.com/

• drawDB

  Free and open-source online database diagram editor with no signup required.

  https://drawdb.app/

• DynamicDocs

  Generate PDF documents with JSON to PDF API based on LaTeX templates. The free plan allows 50 API calls per month and access to a library of templates.

  https://advicement.io

• Earnings Feed

  Real-time SEC filings, insider trades, and institutional holdings API. Free tier includes 15 requests per minute.

  https://earningsfeed.com/api

• Export SDK

  PDF generator API with drag-and-drop template editor that provides an SDK and no-code integrations. The free plan has 250 monthly pages, unlimited users, and three templates.

  https://exportsdk.com

• ExtendsClass

  Free web-based HTTP client to send HTTP requests.

  https://extendsclass.com/rest-client-online.html

• Financial Data

  Stock market and financial data API. Free plan allows 300 requests per day.

  https://financialdata.net/

• finlight

  Real-time financial news API with entity resolution (tickers, ISIN) and sentiment tagging, available over REST, WebSocket, webhooks and an MCP server. Free tier: 5,000 requests/month on both REST and MCP, 12-hour delayed articles, no card required.

  https://finlight.me

• Firecrawl

  API that crawls websites and converts them into clean, LLM-ready markdown or structured data, handling JavaScript rendering, proxies, and rate limits. The free plan includes 1,000 credits per month with no credit card required.

  https://www.firecrawl.dev/

• FormatJSONOnline.com

  A free, browser-based tool to format, validate,compare and minify JSON data instantly.

  https://formatjsononline.com

• FreeIPAPI

  Free, Fast and Reliable IP Geolocation API for commercial and non-commercial users available in JSON

  https://freeipapi.com

• Geolocated.io

  IP Geolocation API with multi-continent servers, offering a free plan with 2,000 requests per day.

  https://geolocated.io

• Hex

  a collaborative data platform for notebooks, data apps, and knowledge libraries. Free community tier with up to five projects.

  https://hex.tech/

• Hook0

  Hook0 is an open-source Webhooks-as-a-service (WaaS) that makes it easy for online products to provide webhooks. Dispatch up to 100 events/day with seven days of history retention for free.

  https://www.hook0.com/

• Hoppscotch

  A free, fast, and beautiful API request builder.

  https://hoppscotch.io

• HS Ping

  A multi-country HS (Harmonized System) and HTS (Harmonized Tariff System) code lookup API, with a free plan offering 100 lookups/day.

  https://hsping.com

• huggingface.co

  Build, train, and deploy NLP models for Pytorch, TensorFlow, and JAX. Free up to 30k input characters/mo.

  https://huggingface.co

• Insomnia

  Open-source API client for designing and testing APIs, it supports REST and GraphQL

  https://insomnia.rest

• Inngest

  Durable execution and event-driven workflows for TypeScript, Python, and Go. Hobby plan is free with 50k executions/month, 5 concurrent steps, 500k events ingested, and no credit card required.

  https://www.inngest.com

• Invantive Cloud

  Access over 70 (cloud)platforms such as Exact Online, Twinfield, ActiveCampaign or Visma using Invantive SQL or OData4 (typically Power BI or Power Query). Includes data replication and exchange. Free plan for developers and implementation consultants. Free for specific platforms with limitations in data volumes.

  https://cloud.invantive.com/

• IP Geolocation API by ipwho.org

  2,000 free requests per day. Fast, enterprise grade API at non-enterprise prices. Trusted by developers, corporate, government and education clients. Servers in 12+ regions.

  https://ipwho.org/

• IP Geolocation API

  IP Geolocation API from Abstract - Allows 1,000 free requests.

  https://www.abstractapi.com/ip-geolocation-api

• ip-api

  IP Geolocation API, Free for non-commercial use, no API key required, limited to 45 req/minute from the same IP address for the free plan.

  https://ip-api.com

• IP.City

  100 Free IP geolocation requests per day

  https://ip.city

• IP2Location.io

  Freemium, fast, and reliable IP geolocation API. Get data like city, coordinates, ISP, ASN, AS data and more. The free plan includes 50k credits per month. IP2Location.io also offers 500 free WHOIS and hosted domain lookups per month. See domain registration details and find domains hosted on a specific IP. Upgrade to a paid plan for more features.

  https://www.ip2location.io/

• Proxmint GeoIP

  Free IP → country/city/ASN JSON API, no key, CORS-open. MaxMind GeoLite2.

  https://proxmint.com/tools/ip-lookup

• ip2geo.dev

  IP geolocation API to convert IP addresses into location data including city, country, timezone, ASN, and currency. The free plan includes 1,000 requests per month.

  https://ip2geo.dev

• ipaddress.sh

  Simple service to get a public IP address in different formats.

  https://ipaddress.sh

• ipapi.is

  A reliable IP Address API from Developers for Developers with the best Hosting Detection capabilities that exist. The free plan offers 1000 lookups without signup.

  https://ipapi.is/

• ipapi

  IP Address Location API by Kloudend, Inc - A reliable geolocation API built on AWS, trusted by Fortune 500. The free tier offers 30k lookups/month (1k/day) without signup.

  https://ipapi.co/

• ipbase.com

  IP Geolocation API - Forever free plan that spans 150 monthly requests.

  https://ipbase.com

• IPinfo

  Fast, accurate, and free (up to 50k/month) IP address data API. Offers APIs with details on geolocation, companies, carriers, IP ranges, domains, abuse contacts, and more. All paid APIs can be trialed for free.

  https://ipinfo.io/

• IPLocate

  IP Geolocation API, free up to 1,000 requests/day. Includes proxy/VPN/hosting detection, ASN data, IP to Company, and more. IPLocate also offers free downloadable IP to Country and IP to ASN databases in CSV or GeoIP-compatible MMDB formats.

  https://www.iplocate.io

• IPTrace

  An embarrassingly simple API that provides your business with reliable and helpful IP geolocation data with 50,000 free lookups per month.

  https://iptrace.io

• JSON IP

  Returns the Public IP address of the client it is requested from. No registration is required for the free tier. Using CORS, data can be requested using client-side JS directly from the browser. Useful for services monitoring change in client and server IPs. Unlimited Requests.

  https://getjsonip.com

• JSON to Table

  Convert JSON into an interactive table for quick viewing, editing, and sharing online.

  https://jsontotable.org

• JSON2Video

  A video editing API to automate video marketing and social media videos, programmatically or with no code.

  https://json2video.com

• JSONGrid

  Free tool to Visualize, Edit, Filter complex JSON data into beautiful tabular Grid. Save and Share JSON data over link link.

  https://jsongrid.com

• JSONing

  Create a fake REST API from a JSON object, and customize HTTP status codes, headers, and response bodies.

  https://jsoning.com/api/

• JSONSwiss

  JSONSwiss is a powerful online JSON viewer, editor, and validator. Format, visualize, search, and manipulate JSON data with AI-powered repair, tree view, table view, code generation in 12+ programming languages, convert json to csv, xml, yaml, properties and more.

  https://www.jsonswiss.com/

• KillBait API

  KillBait API allows users to submit URLs for content evaluation, detecting potential clickbait and categorizing articles. The API is designed for moderate publishing frequency, with limits of 1 submission per hour and 10 per day. Media partners can request higher limits.

  https://killbait.com/api/doc

• Kreya

  Free gRPC GUI client to call and test gRPC APIs. Can import gRPC APIs via server reflection.

  https://kreya.app

• LayerCall

  Fraud and trust scoring for an IP, email, phone, domain or device in one call, plus authorization and Web Bot Auth verification for AI agents. 1,000 lookups/month free, no card required.

  https://www.layercall.com

• LoginLlama

  A login security API to detect fraudulent and suspicious logins and notify your customers. Free for 1,000 logins per month.

  https://loginllama.app

• Market Data API

  Provides real-time and historical financial data for stocks, options, mutual funds, and more. The Free Forever API tier allows for 100 daily API requests at no charge.

  https://www.marketdata.app

• Maxim AI

  Simulate, evaluate, and observe your AI agents. Maxim is an end-to-end evaluation and observability platform, helping teams ship their AI agents reliably and >5x faster. Free forever for indie developers and small teams (3 seats).

  https://getmaxim.ai/

• Mintlify

  Modern standard for API documentation. Beautiful and easy-to-maintain UI components, in-app search, and interactive playground. Free for 1 editor.

  https://mintlify.com

• MockAPI

  MockAPI is a simple tool that lets you quickly mock up APIs, generate custom data, and perform operations using a RESTful interface. MockAPI is meant to be a prototyping/testing/learning tool. One project/2 resources per project for free.

  https://www.mockapi.io/

• Mockerito

  Free mock REST API service providing realistic data across 9 domains (e-commerce, finance, healthcare, education, recruitment, social media, stock markets, weather, and aviation). No mandatory signup, no API keys, unlimited requests. Perfect for frontend prototyping, API testing, learning and teaching web development.

  https://mockerito.com/

• Mockfly

  Mockfly is a trusted development tool for API mocking and feature flag management. Quickly generate and control mock APIs with an intuitive interface. The free tier offers 500 requests per day.

  https://www.mockfly.dev/

• Mocko.dev

  Proxy your API, choose which endpoints to mock in the cloud and inspect traffic, for free. Speed up your development and integration tests.

  https://mocko.dev/

• Multi-Exit IP Address Checker

  A free and simple tool to check your exit IP address across multiple nodes and understand how your IP appears to different global regions and services. Useful for testing rule-based DNS splitting tools such as Control D.

  https://ip.alstra.ca/

• NASdisks Drive Data API

  Free, no-key, CORS-enabled API for NAS HDD/SSD specifications, per-model CMR/SMR classification, and annualized failure rates derived from Backblaze Drive Stats. Returns JSON or CSV, CC BY 4.0, no signup.

  https://www.nasdisks.com/data/

• News API

  Search news on the web with code, and get JSON results. Developers get 100 queries free each day. Articles have a 24 hour delay.

  https://newsapi.org

• numlookupapi.com

  Free phone number validation API - 100 free requests / month.

  https://numlookupapi.com

• OCR.Space

  An OCR API parses image and pdf files that return the text results in JSON format. 25,000 requests per month are free and a 1MB file size limit.

  https://ocr.space/

• OpenAPI3 Designer

  Visually create Open API 3 definitions for free.

  https://openapidesigner.com/

• Parseur

  20 free pages/month: Extract data from PDFs, emails. AI powered. Full API access.

  https://parseur.com

• PDF-API.io

  PDF Automation API, visual template editor or HTML to PDF, dynamic data integration, and PDF rendering with an API. The free plan comes with one template, 100 PDFs/month.

  https://pdf-api.io

• PDFBolt

  Developer-focused PDF generation API designed with privacy in mind. It offers Stripe-inspired documentation and includes 500 free PDF conversions per month.

  https://pdfbolt.com

• Pexafy

  Semantic image search API across 9 free photo sources (Unsplash, Pexels, Pixabay, Kaboompics & more), 9M+ photos under one JSON schema instead of one integration per source. Plain-language queries, reverse image search, filters on color, orientation and license. CORS is open on read endpoints, so it runs from the browser. The free plan includes 5,000 API requests/month and 1 key, no app review.

  https://docs.pexafy.com

• Pixela

  Free daystream database service. All operations are performed by API. Visualization with heat maps and line graphs is also possible.

  https://pixe.la/

• Posthook

  Schedule webhooks to fire at a future time with automatic retries, delivery tracking, and failure alerting. Free plan includes 1,000 webhooks per month.

  https://posthook.io

• Postman

  Simplify workflows and create better APIs - faster - with Postman, a collaboration platform for API development. Use the Postman App for free forever. Postman cloud features are also free forever with certain limits.

  https://postman.com

• PrefectCloud

  A complete platform for dataflow automation. Free plan includes 5 deployed workflows and 500 minutes of serverless compute credits per month.

  https://www.prefect.io/cloud/

• Preset Cloud

  A hosted Apache Superset service. Forever free for teams of up to 5 users, featuring unlimited dashboards and charts, a no-code chart builder, and a collaborative SQL editor.

  https://preset.io/

• ProxySentry

  IP API that detects residential proxies and VPNs. ProxySentry.io offers a free tier with 10k requests per month on rapidapi.com.

  https://proxysentry.io/

• Publora

  Publishing API: post or schedule to 10 social networks with one HTTPS call, or from an AI agent over MCP. Free forever: 15 posts/month, 3 connected accounts, all networks except X.

  https://publora.com

• Reducto

  Turn any unstructured documents (PDF, XLSX, JPG, PPTX, etc.) into structured JSON data. Parse, extract data, and edit PDF forms. Free tier with 15k free credits and pay-as-you-go.

  https://reducto.ai

• Rendi

  FFmpeg API - A REST API for FFmpeg, run FFmpeg online without handling the infrastructure. Free tier with monthly processing quota and 4 vCPUs available.

  https://rendi.dev

• RequestBin.com

  Create a free endpoint to which you can send HTTP requests. Any HTTP requests sent to that endpoint will be recorded with the associated payload and headers so you can observe recommendations from webhooks and other services.

  https://requestbin.com

• ROBOHASH

  Web service to generate unique and cool images from any text.

  https://robohash.org/

• Scraper's Proxy

  Simple HTTP proxy API for scraping. Scrape anonymously without having to worry about restrictions, blocks, or captchas. First 100 successful scrapes per month free including javascript rendering (more available if you contact support).

  https://scrapersproxy.com

• ScrapingAnt

  Headless Chrome scraping API and free checked proxies service. Javascript rendering, premium rotating proxies, CAPTCHAs avoiding. Free 10,000 API credits.

  https://scrapingant.com/

• SerpApi

  Real-time search engine scraping API. Returns structured JSON results for Google, YouTube, Bing, Baidu, Walmart, and many other machines. The free plan includes 100 successful API calls per month.

  https://serpapi.com/

• Simplescraper

  Trigger your webhook after each operation. The free plan includes 100 cloud scrape credits.

  https://simplescraper.io

• Geekflare API

  Geekflare API lets you scrape websites into Markdown, take screenshots, perform TLS scans and DNS lookups, test load times, and more. The free plan offers 500 API credits per month (e.g., 500 DNS lookups, 250 web scrapes, or 100 screenshots). See credit mapping.

  https://geekflare.com/api/

• SmartParse

  SmartParse is a data migration and CSV to API platform that offers time- and cost-saving developer tools. The Free tier includes 300 Processing Units per month, Browser uploads, Data quarantining, Circuit breakers, and Job Alerts.

  https://smartparse.io

• Sofodata

  Create secure RESTful APIs from CSV files. Upload a CSV file and instantly access the data via its API allowing faster application development. The free plan includes 2 APIs and 2,500 API calls per month. You don't need a credit card.

  https://www.sofodata.com/

• Sqlable

  A collection of free online SQL tools, including an SQL formatter and validator, SQL regex tester, fake data generator, and interactive database playgrounds.

  https://sqlable.com/

• Svix

  Webhooks as a Service. Send up to 50,000 messages/month for free.

  https://www.svix.com/

• Tavily AI

  API for online search and rapid insights and comprehensive research, with the capability of organization of research results. 1000 request/month for the Free tier with No credit card required.

  https://tavily.com/

• TemplateFox

  PDF generation API with a visual template editor, dynamic data merging, and SDKs for 7 languages. Free plan includes 60 PDFs/month and 3 templates.

  https://pdftemplateapi.com

• The IP API

  IP Geolocation API with 1000 free requests / day. Provides information about the location of an IP address, including country, city, region, and more.

  https://theipapi.com/

• TinyMCE

  rich text editing API. Core features are free for unlimited usage.

  https://www.tiny.cloud

• Tomorrow.io Weather API

  Offers free plan of weather API. Provides accurate and up-to-date weather forecasting with global coverage, historical data and weather monitoring solutions.

  https://www.tomorrow.io/weather-api/

• Treblle

  Treblle helps teams build, ship, and govern APIs. With advanced API log aggregation, observability, docs, and debugging. You get all features for free, but there is a limit of up to 250k requests per month on the free tier.

  https://www.treblle.com

• Trophy

  Trophy is the gamification layer for consumer apps. Use pre-built APIs and open-source UI components to ship achievements, streaks, points, leaderboards and more. Free for up to 1,000 monthly active users.

  https://trophy.so

• UniRateAPI

  Real-time exchange rates for 590+ currencies and crypto. Unlimited API calls on the free plan, perfect for developers and finance apps.

  https://unirateapi.com

• vatcheckapi.com

  Simple and free VAT number validation API. 150 free validations per month.

  https://vatcheckapi.com

• vatnode

  EU VAT number validation REST API with VIES and national tax-registry fallback, returning the official VIES consultation number for audit records. Free tier of 100 validations/month, no credit card.

  https://vatnode.dev

• WeatherXu

  Global weather data including current conditions, hourly and daily forecasts, and weather alerts via our API. Integrating AI models and ML systems to analyze and combine multiple weather models to deliver improved forecast accuracy. Free tier includes 10,000 API calls/month.

  https://weatherxu.com/

• WebScraping.AI

  Simple Web Scraping API with built-in parsing, Chrome rendering, and proxies. Two thousand free API calls per month.

  https://webscraping.ai

• Weights & Biases

  The developer-first MLOps platform. Build better models faster with experiment tracking, dataset versioning, and model management. Free tier for personal projects only, with 100 GB of storage included.

  https://wandb.ai

• What Is My IP

  A free service to check your public IPv4 and IPv6 address and related request data through an API with different output formats for automation, scripts, and network troubleshooting.

  https://whatismyip.help

• What The Diff

  AI-powered code review assistant. The free plan has a limit of 25,000 monthly tokens (~10 PRs).

  https://whatthediff.ai

• XFlux

  X/Twitter read REST API (profiles, search, timelines) plus account monitors. Free tier: 1,000 API calls/month, 1 monitor, instant API key. HTTP webhooks on paid plans from $19/mo.

  https://www.xfluxapi.com

• wolfram.com

  Built-in knowledge-based algorithms in the cloud.

  https://wolfram.com/language/

• wrapapi.com

  Turn any website into a parameterized API. 30k API calls per month.

  https://wrapapi.com/

• Zenscrape

  Web scraping API with headless browsers, residentials IPs, and straightforward pricing. One thousand free API calls/month and extra credits for students and non-profits.

  https://zenscrape.com/web-scraping-api

• Zipcodebase

  Free Zip Code API, access to Worldwide Postal Code Data. 5,000 free requests/month.

  https://zipcodebase.com

• Zip-Codes

  REST API for US and Canadian postal codes with address validation, radius search, and Census demographics. 2,500 free requests/day.

  https://www.zip-codes.com/api/

• Zipcodestack

  Free Zip Code API and Postal Code Validation. Ten thousand free requests/month.

  https://zipcodestack.com

• Zuplo

  Free API Management platform to design, build, and deploy APIs to the Edge. Add API Key authentication, rate limiting, developer documentation and Monetization to any API in minutes. OpenAPI-native and fully-programmable with web standard apis & Typescript. The free plan offers up to 10 projects, unlimited production edge environments, 1M monthly requests, and 10GB egress.

  https://zuplo.com/

• Metashot

  Open Graph (OG) social preview image generation API. Generate dynamic 1200×630 images for Twitter, LinkedIn and Facebook via URL params, edge-cached on Cloudflare Workers. Free tier: 1,000 renders/month. Paid plans from $12/month.

  https://metashot.io

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