Do something with your bookmarks
Unmark is designed to help you actually do something with your bookmarks, rather than just hoard them. A simple layout puts the focus on your task at hand and friendly reminders keep you in line. Filtering options let you find what you're looking for.
The open source version of Unmark is available on GitHub.
Few, but key features
Use the open source version
An open source version of Unmark is available on GitHub. Fork it and set up your own install.