Joplin - an open source note taking and to-do application with synchronization capabilities for Windows, macOS, Linux, Android and iOS.
A printer is a peripheral device which makes a persistent representation of graphics or text, usually on paper. Printers that have a network connection often include a built-in web server that lets you manage the printer from any browser on the network.
Navidrome is a self-hosted, open source music server and streamer. It gives you freedom to listen to your music collection from any browser or mobile device.
Wekan is an open source, collaborative kanban board application.
grocy is a web-based self-hosted groceries & household management solution for your home.