Desmos scientific calculator isn’t open source but it is what I end up using most of the time. It just does float stuff though, it can’t handle something like (10^100+1)-10100

It also doesn’t support nearly as many features as the graphing calculator does, for some reason. But it formats everything very nicely and you can copy and paste as latex

I think the main difficulty is getting companies like Gmail to recognize your domain as legitimate, as they don’t by default

If you install it locally, it will be as secure as any other thing you do on your computer.

Correct me if I’m wrong, but it sounds to me like they don’t really have another option at the moment, and its Bing who is responsible for most of the changes.

Isn’t the new part just the google stuff? They have always been using bing results.