OpenMontage showed up in today's rankings with 677 votes. It is in the general category, which means people are using it for real work.
I don't review tools I haven't used. But when something gets 677 votes in one day, I pay attention. The general space moves fast. Missing a tool that gains traction early means playing catch-up later.
Here's what I do when I see a tool like this: open it, spend 5 minutes, and ask one question — does this solve a problem I actually have? If the answer is no, I move on. If it is yes, I try it for a week.