* Hetzner.de for servers (I've been using their physical servers for many years now, incredible performance per € spent)
* Fernand as your CRM, it's smooth and nice and so much better and faster than all the zendesks and freshdesks it's not even funny. (https://getfernand.com/)
* AISLER if you design electronics and need to make PCBs (https://aisler.net/)