BetterBookmarks changes the way the native bookmarks in Sublime Text 3 work. In addition to only allowing one bookmark per line, you can customize different layers for your bookmarks.
Sublime plugin to save all files with filenames that exist on disk, and close all files without valid files without saving
Sublime Text plugin to autosave git messages for commit, rebase, merge, etc when the message window is closed.
A flexible and easy to use Session Manager
A window-oriented session manager for Sublime Text.