[LinuxBender]

I don't know if it qualifies as happy given I do not experience emotions for companies or services but thus far I have not had too many issues with Fastmail. I keep my self hosted infrastructure in the event the other shoe drops such as they get too big and start misbehaving or they go out of business because of some law their HQ is in AU. I too am pleased with my Brother laser-jet.

As for tools, I find OpenSSH, Mosh, NSD DNS, Unbound DNS, LFTP, Nginx, HAProxy, Tinc VPN, Firefox and assorted other Linux tools useful on a daily basis.