Tab Stash is a truly useful extension. It improves considerably on the classic OneTab.

I started with OneTab several years ago, but it proved too quirky and unstable and easy to lose everything. I migrated to Better OneTab until it no longer worked with new versions of Firefox, so I begrudgingly returned to OneTab.

I had more than 1,500 webpages saved in OneTab, mostly articles I might need to refer to while writing but not "worthy" of being bookmarks. I found Tab Stash when I needed to do a refresh for Firefox and knew I would lose my OneTab list. (A saved export could be imported into the fresh Firefox, but what a hassle.)

Tab Stash solved several problems, starting with being able to import a OneTab export file. Then, since Tab Stash stores its contents as an addition to Firefox's bookmarks under the "Other Bookmarks" category, the Tab Stash contents survive a Firefox refresh and are ready to go when the extensions are reinstalled in Firefox.

After using OneTab, there was a slight learning curve for adding single or multiple tabs to Tab Stash groups. I'm not keen on Tab Stash displaying in a sidebar, although preferable to displaying in a new tab. There is an "advanced setting" that displays Tab Stash in a popup -- my personal choice.

Tab Stash needs to be open to save a tab into a specified tab group. I will give OneTab credit for being able to save tabs to a named tab group through a right-click menu without OneTab being open.

With hordes of saved pages, the capability to collapse the tab groups so only the group headings display is most appreciated -- saves a lot of scrolling to get to where you need to be.

The export function is a definite plus, offering a choice of six formats, and will save the group headings with ## to identify them. As if that isn't enough, they can be backed up along with bookmarks through Firefox's Manage Bookmarks function. The "Clickable Links" option essentially creates an HTML page that can be pasted into Word, although I would like a full HTML output option as well.

All in all, Tab Stash is an immensely useful addition to Firefox for anyone who needs to keep track of numerous webpages on a semi-permanent basis but doesn't want to clutter up their bookmarks collection.