Sourcegraph for GitHub might be a bit more popular than Upcase by thoughtbot. We know about 1 link to it since March 2021 and only 1 link to Upcase by thoughtbot. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
This site also has courses on web dev. Plus extra courses such as a course on refactoring that I really liked. Source: about 3 years ago
Sourcegraph: Adds code intelligence to GitHub, GitLab, and other hosts: hovers, definitions, references. For 20+ languages. - Source: dev.to / over 2 years ago
Codecademy Go - Codecademy Go app is an educational app through which you can effortlessly practice and review your coding skills right at your fingertips.
Gitpod - One click dev environment for GitHub
The DesignOps Handbook by InVision - Guide to understanding how DesignOps help design teams scale
JSONView - Validate and view JSON documents.
Your First Year in Code - A complete guide for new & aspiring developers
JSONLint - JSON Lint is a web based validator and reformatter for JSON, a lightweight data-interchange format.