A great tool when it works.

I've spent a few months using this add-on on a daily basis and I can say it's very useful when it behaves as expected. Too often I'll navigate to a tab that hasn't been opened in a while, the workona re-direct link is momentarily there, and then it just disappears.
I have to search for the part of the title that was visible and hope search results pop something up.

Then there's the case where my workspaces disappear. If I leave it alone for a while (hours), it will eventually come back, but I'm prevented from utilizing workona which is a pretty big hindrance once you develop a tool like this into your workflow.

I've also seen duplication of workspaces as unsaved workspaces which is annoying.

All-in-all, workflow helps me get some work done, but it's extremely frustrating when it doesn't work.
While this *core functionality* is still so unstable, I simply can not trust Workona enough to be converted into a paying customer.