When comparing Kozmos vs Buku, the Slant community recommends Kozmos for most people. In the question“What are the best ways to organize bookmarks?” Kozmos is ranked 13th while Buku is ranked 14th.
Ranked in these QuestionsQuestion Ranking
Pro It works offline
Pro Easy bookmarking
Kozmos lets you add more bookmarks than you used to do because you don't have to fill forms anymore. Everything is automated, just hit the like button
Kozmos tags bookmarks automatically, so you don't have to!
Pro Organizes Bookmarks Automatically
Kozmos shows bookmarks in a nicely organized way. Media bookmarks like videos, pictures, sounds are sorted on the right side, articles and websites on the left.
All bookmarks are private!
Pro It's free
Pro Has extensions for all browsers
Pro Simple and fast
Importing means that you don't need to start from scratch to try Buku, and exporting means that you don't risk locking yourself in by doing so.Buku allows you to import and export bookmarks from and to a few important formats, including the recently added orgfiile.
Pro Under active development, responsive team
The project is maintained actively with a rolling ToDo list and the devs encourage feeback and requests.
Advanced bookmark management is possible, with the right use of Buku's commands.
Pro Fully compatible with firefox bookmarks
Pro Easy to use
Using Buku is easy once you memorize its simple syntax.
Pro Quality doccumentation
The Github page for Buku is useful for learning how to use it, and discovering features.
Pro Completion scripts
Handy completion scripts are available for bash, fish and zsh shells.
Pro GUI webserver available
Buku v3.8 has added a GUI based local webserver to access the bookmarks from the browser.
Pro Checks added for deletion options
Checks have been added for all deletion options in v3.8 to show the bookmarks to be deleted and confirm with the user before actual deletion.
Con Assumes that you always know what you're doing
Buku doesn't show you what will happen before it performs a command that you input. For example: If you type the command to delete a bookmark, there's no way to see which bookmark is tied to the index that you input before the deletion happens. You need to know yourself by checking with another command. Couple this with the lack of a way to undo actions, and you could end up with a situation where you accidentally delete the wrong bookmark (or worse, range of bookmarks) and find out afterwards, without having any way to know which bookmark was deleted by this mistake (because bookmarks are identified by reassignable indices, not URLs or titles) and no way to undo the damage that was done.
This lack of safety means that you must know exactly what you're doing before using dangerous options like "-d", or you could cause irreversible damage.
Con CLI only
Buku's interface is logical, but the lack of a GUI will still be off-putting to someone who prefers them over CLIs.