Free

Review Notebook App

Code review for Jupyter Notebooks with visual diff and commenting

CircleCI

Automatically build, test, and deploy your project in minutes

Jira Software + GitHub

Connect Jira to GitHub

WIP

DO NOT MERGE – as a service

codebeat

Code review expert on demand. Automated for mobile and web

Imgbot

A GitHub app that optimizes your images

Codacy

Automated code reviews to help developers ship better software, faster

LeanBoard

Whiteboard with sticky notes, connected with your GitHub issue

ZenHub

Agile Task Boards, Epics, Estimates and Reports, all within GitHub's UI

Mergify

Pull requests automation service. Merge your pull requests faster

DeepScan

Advanced static analysis for automatically finding runtime errors in JavaScript code

Sonatype DepShield

Monitor your open source components for security vulnerabilities - goodbye muda, hello kaizen

Cloud 66 for Rails

Build, deploy, and maintain your Rails apps on any cloud or server

Hound

Automated code reviews

Datree

Policy enforcement solution for confident and compliant code

App Center

Continuously build, test, release, and monitor apps for every platform

Better Code Hub

A Benchmarked Definition of Done for Code Quality with BetterCodeHub

Travis CI

Test and deploy with confidence

GitHub Learning Lab

Your interactive guide to learning the skills you need without leaving GitHub

Sentry

Real-time, cross-platform crash reporting and error logging