I haven't tried these but for self-hosting email, Mox looks really good and easy to set up for personal use. For something beefier, Stalwart seems to be gaining traction and has more features a business would want.

FYI the Proton CEO is a Trump sympathizer.

As a GitHub replacement, Gitea is really good and easy to run/maintain.

Proton is based in Switzerland and has a pretty comprehensive offer of email, calendar, password manager and VPN these days.

https://madeinca.ca/ should help out, and if you know of more submit them.

Don't know anything Canadian specific, but there's a list of services hosted in Europe: https://european-alternatives.eu/

Lots of these should have options hosted in Canada if that's important to you.

Forgejo is a self hosted github replacement

https://github.com/awesome-selfhosted/awesome-selfhosted

I use zenutech.ca

My usage is relatively simple/low and I haven't really had much to compare it with, but it's been fine for me.

On the domain side, I use Canspace. They've always been the cheapest around for .ca domains too which is an added bonus. Been with them probably just under a decade and super happy with the services. Just using for personal use stuff.

I use gmx for email. I have heard good things about tuta too. Both are German.