Kualitas Kode

beanstalkapp.com

A complete workflow to write, review, and deploy code), a free account for one user, and one repository with 100 MB of storage

https://beanstalkapp.com/

codacy.com

Automated code reviews for PHP, Python, Ruby, Java, JavaScript, Scala, CSS, and CoffeeScript, free for unlimited public and private repositories

https://www.codacy.com/

Codeac.io

Automated Infrastructure as Code review tool for DevOps integrates with GitHub, Bitbucket, and GitLab (even self-hosted). In addition to standard languages, it also analyzes Ansible, Terraform, CloudFormation, Kubernetes, and more. (open-source free)

https://www.codeac.io/infrastructure-as-code.html?ref=free-for-dev

codecov.io

Code coverage tool (SaaS), free for Open Source and one free private repo

https://codecov.io/

CodeFactor

Automated Code Review for Git. The free version includes unlimited users, public repositories, and one private repo.

https://www.codefactor.io

coderabbit.ai

AI-powered code review tool that integrates with GitHub/GitLab. Free tier includes 200 files/hour, 3 reviews per hour, and 50 conversations/hour. Free forever for open source projects.

https://coderabbit.ai

CodSpeed

Automate performance tracking in your CI pipelines. Catch performance regressions before deployment, thanks to precise and consistent metrics. Free forever for Open Source projects.

https://codspeed.io

coveralls.io

Display test coverage reports, free for Open Source

https://coveralls.io/

deepscan.io

Advanced static analysis for automatically finding runtime errors in JavaScript code, free for Open Source

https://deepscan.io

DeepSource

DeepSource continuously analyzes source code changes, finding and fixing issues categorized under security, performance, anti-patterns, bug-risks, documentation, and style. Native integration with GitHub, GitLab, and Bitbucket.

https://deepsource.io/

DiffText

Instantly find the differences between two blocks of code. Completely free to use.

https://difftext.com

eversql.com

EverSQL - The #1 platform for database optimization. Gain critical insights into your database and SQL queries automatically.

https://www.eversql.com/

gerrithub.io

Gerrit code review for GitHub repositories for free

https://review.gerrithub.io/

goreportcard.com

Code Quality for Go projects, free for Open Source

https://goreportcard.com/

gtmetrix.com

Reports and thorough recommendations to optimize websites

https://gtmetrix.com/

holistic.dev

The #1 static code analyzer for Postgresql optimization. Performance, security, and architect database issues automatic detection service

https://holistic.dev/

houndci.com

Comments on GitHub commits about code quality, free for Open Source

https://houndci.com/

prquorum.com

ai code review github app, free 50 reviews/month on 2 repos

https://prquorum.com

reviewable.io

Code review for GitHub repositories, free for public or personal repos.

https://reviewable.io/

scan.coverity.com

Static code analysis for Java, C/C++, C# and JavaScript, free for Open Source

https://scan.coverity.com/

scrutinizer-ci.com

Continuous inspection platform, free for Open Source

https://scrutinizer-ci.com/

semanticdiff.com

Programming language aware diff for GitHub pull requests and commits, free for public repositories

https://app.semanticdiff.com/

shields.io

Quality metadata badges for open source projects

https://shields.io

sonarcloud.io

Automated source code analysis for Java, JavaScript, C/C++, C#, VB.NET, PHP, Objective-C, Swift, Python, Groovy and even more languages, free for Open Source

https://sonarcloud.io