Disp4tch

IBM stock is basically cash. Limited growth potential, very stable, fat dividend.

Apache Arrow is another one (analytics memory format), it supports a whole litany of languges via C++ bindings, too many to list.

Yes, from the python side of things there are tools like py03 that make integrating rust into python code really painless.

I have a sql parsing library (shameless plug) that is 50x faster than any other python implementation, it is just a super simple wrapper around a rust crate.

https://github.com/wseaton/sqloxide

For email you can import your gmail account via IMAP to fastmail. I have a custom domain so it's been awesome to finally serve mail from it and a relatively painless transition.

The Tree Style Tabs add-on supports this behavior with Firefox's containers, it is awesome.