GitSheet - A dead simple Git cheat sheet.
Waydev - Waydev analyzes your codebase from Github, Gitlab, Azure DevOps & Bitbucket to help you bring out the best in your engineers work.
AI Cheatsheet - A tool to help you ace AI basics
Screenful Metrics for GitHub - Analytics for GitHub Issues
CSS Animation Cheat Sheet - Awesome CSS3 plugin for spiffy animations
GitPrime - GitPrime uses data from any Git based code repository to give management the software engineering metrics needed to move faster and optimize work patterns.