Very nice. I love the idea of integrating tab saving with bookmarks. OneTab is great, but it's easy to rack up a stupendous number of saved links, with really important ones lost in the accumulated junk.

I've bounced back and forth through a couple different approaches and tools. I have a ton of browser bookmarks in Chrome, many of which are old even after I did some cleanup work a while ago. Plus Instapaper. And, of course, a ton of saved tabs in OneTab. I've toyed with a couple of open-source tools like unmark and bookmarks.public (git-based, which sounds fun but is really just a couple extra steps removed from your browser), but never really found something that satisfied all of my needs.

https://github.com/plainmade/unmark https://github.com/skx/bookmarks.public

Crestify has a tool to import bookmarks from Chrome. Happy to hear you found the tab saving useful :). Let me know what could make Crestify the ultimate bookmarking tool for you, always open to feature requests on GitHub too!