Eclipse Che : Eclipse Che is a developer workspace server and cloud IDE built for teams and organizations.
howdoi : Instant coding answers via the command line.
Tabnine : Tabnine is an AI-powered code completion extension for IDEs
Cypress : JavaScript End to End Testing Framework. Fast, easy and reliable testing for anything that runs in a browser.
Online javascript beautifier : Beautify, unpack or deobfuscate JavaScript and HTML, make JSON/JSONP readable, etc.
Insight.io brings IDE-like code intelligence features such as cross-reference, class hierarchy and semantic search, right into your browser and helps developers to work with more productivity.