Created a simple GIF to explain the product, looking for feedback!

Agreeing with other commenters that the zooming is distracting. When "read these" is clicked, you see the tabs "flying in", which is very helpful to see what's happening. When "some project" is clicked, this animation seems way too fast. Maybe even make it a wee bit slower to give it some extra focus.

Echoing @antarctican, it wasn't totally clear at first glance what your product did and my eye wasn't immediately drawn to the relationship between each section and the browser tabs that you're opening. When you zoom in, it's not clear exactly what you're emphasizing (the focal point may need to be shifted slightly to the right since it's cutting off Dropbox at this moment) or you could instead highlight the tabs instead of zoom; it's a rather quick zoom to watch back to back. Hope this is helpful feedback and thanks for sharing!

Similar yet quite different from the product "Station" and some others I've seen. I typically use at least half a dozen browser windows with a few hundred tabs open at once (see? https://i.imgur.com/c7hxAn2.png and that's only 1 of 8 browser windows right now).

So the #1 question I have as a power user is not answered anywhere at all on your site nor in the GIF: do closed tabs return the memory back to the system, and if so will they save the state such that if you were in the middle of filling out a form will that information be gone?

Memory management using browsers is a huge concern. I use The Great Suspender to suspend my tabs and free up some memory, and Station to organize some of what I do. A single product that does both would be interesting to test.

Anyhow I digress, in regards to the GIF, it took me a moment to understand what was going on when clicking on "Some Project" because I didn't see the 2 tabs open, I had to watch it about 3 times before I noticed them appear. When you clicked on "Read These", the tabs appear to animate and slide in from the left which draws in my eye. "Some Project" doesn't seem to have that effect and thus I missed the significance at first. Hope this helps!

cheers