Turtl lets you take notes, bookmark websites, and store documents for sensitive projects. From sharing passwords with your coworkers to tracking research on an article you're writing, Turtl keeps it all safe from everyone but you and those you share with. Developed by Lyon Bros. Enterprises, LLC
License: Open Source
Turtl is ideal for users looking for a simple, privacy-focused note-taking solution with rich media support, while TheBrain offers a more complex visual organization tool that excels in mind mapping and data management.