The only complaint I have is that I got so used to using OneTab that it replaced my browser bookmark manager. That worked just fine until I had accumulated so many bookmarks that the javascript used slowed to a crawl. Then in an attempt to clear things out by exporting all my OneTab bookmarks to a txt file, I found out that the javascript running on the export page is far more compute intensive. In fact, it's do computing intensive that it repeatedly crashes the browser making it impossible to export all the bookmarks without first restoring enough tab sets and saving them elsewhere until you have few enough links in OneTab to export them.
...and with comprehensive options, online sharing and import/export of URLs?! And it's fast! Absolutely fantastic, and with great potential for further browser integration. I see this becoming a standard feature in short order.
Seconded.
Works as advertised and the online sharing enables very neat integration with services such as pinboard.in.
Hmm, first time I tried it, OneTab closed all my tabs up into a list, just like advertised. But when I clicked "restore all", it only restored one of my tabs and lost the rest.