PayPal is an online payments and money transfer service that allows you to send money via email, phone, tex...

At GitHub, we're building the text editor we've always wanted. A tool you can customize to do anything, but...

It is an open source, modern and powerful wiki app based on Node.js, Git, and Markdown. It runs on the flam...

It is a powerful knowledge base that works on top of a local folder of plain text Markdown files.

It is a platform for knowledge sharing and management. It focuses on privacy, longevity, and user control. ...