JavaScript - Tools

javascript

http://jsbeautifier.org/
jsbin
http://jsfiddle.net/
http://liveweave.com/
http://www.javascriptlint.com/online_lint.php
http://jsperf.com/

Build Tools:
https://pin.gy/cli/
https://medium.com/@ericsimons/introducing-turbo-5x-faster-than-yarn-npm-and-runs-natively-in-browser-cc2c39715403
https://dzone.com/articles/javascript-build-tools-and-automation-systems-to-u

https://x-team.com/blog/user-experience-threejs/?utm_source=xweekly&utm_medium=xweekly&utm_campaign=xweekly

https://flowtype.org/
http://www.sitepoint.com/comparison-javascript-linting-tools
Combine and minify tools
Documentation tools
IDEs
Static analysis tools
Flow diagram tools
Transpilers / Compilers

JavaScript Shell - Syntax checking