sidebery also has very lovely tab grouping and tab sleeping (unloads the tabs from memory).

This is nice because you can take all your tabs for a research project, condense them to a group and then nap them until you come back to the project.

> tab grouping and tab sleeping

Oh yes I forgot TST doesn't have that since I haven't used it in so long. Keeping groups of unloaded tabs might not be healthy for me, enables my tab hoarding habit.