How would you rate OpenBB [0]? It’s touted as a Bloomberg Terminal alternative and it has most certainly been included in training for all SOTA models.
I haven't looked at it much in a while, but this looks mainly like a frontend to a limited number of public data sources. Most of the value of the terminal (imho) is in the data and the chat. The data side in particular requires just a lot of ongoing operational support that an open source project isn't going to be able to provide.
0. https://github.com/OpenBB-finance/OpenBB