Open Source Pearltrees Alternatives
Pearltrees is described as 'social curation tool. It lets you organize, discover and share the stuff you like on the web'. There are more than 50 alternatives to Pearltrees for various platforms. The best alternative is Bookmark Sidebar, which is both free and Open Source. Other great apps like Pearltrees are LinkAce (Free, Open Source), Advanced Bookmark Search (Free, Open Source), Pystickynote (Free, Open Source) and DashMachine (Free, Open Source).