trello
Is there a way to get a closed Trello board back from archive? It seems you can only read archived cards, not boards.
(A better warning for what "closing" a board will do might help, too. I accidentally closed my current project.
…Its obvious NOW, but it wasn't then)
While this wasn't possible in early version of Trello, you can now change the team that a board is in.
There isn't a way to collapse boards together.
There have been a lot of requests for a view that combines all your cards across all boards. There is a card for it here: https://trello.com/c/UOIrt48P
Best Answer
View Closed Boards(at the bottom)