Hi George, thank you for the kind words! I'm glad you find Tab Stash useful, and I definitely have plans to continue developing it and to add more features. Regarding duplicate tabs, this is something we used to have but unfortunately had to disable due to a rare but serious bug. I hope to bring it back in a future release.

I've opened a GitHub issue for removing duplicate tabs so I won't lose track of it; if you have any more thoughts on what you'd like to see or want to discuss further, feel free to add a comment: https://github.com/josh-berry/tab-stash/issues/46