MIT License - A license from the Massachusetts Institute of Technology.

CSS Scan - Instantly check or copy computed CSS from any element for only ~95$

Simplified BSD License - Also known as the "2-clause" BSD license, this is a simplified version of an open source license created at the University of California Berkley.

CodePen - A front end web development playground.

AGPL - GNU Affero General Public License. Strong license for applications designed to guarentee user freedoms to access, modify, and redistribute server-side code.

CodeOcean - Code Ocean is a research collaboration platform. Create, collaborate on, share, execute, and publish computational code and data from anywhere, with anyone.