It has Google Chrome and Firefox browsers extensions. It works fine with Linux, Mac OSX, and Windows. Turtle is an open source note-taking application, built to organize notes, passwords, bookmarks, and images. We have covered special note-taking styles and note-taking editors in this article: 12 Open source Free Note-taking Desktop Apps with Unique Features. We choose the notes with advanced and usable features as powerful encryption, cloud backup and synchronization, private note support, and multi-platform as it can run on Windows, Linux, and Mac OSX.
There is free software with a set of features that can compete and win with a commercial solution.
Note taking, is a daily requirement for most of us, however, finding a good solution that can compete with commercial ones is hard.