Forgejo is a self-hosted lightweight software forge. Easy to install and low maintenance, it just does the job.
BookStack is a simple, self-hosted, easy-to-use platform for organising and storing information.
The to-do app to organize your life.
Also one of the two wild South American camelids which live in the high
alpine areas of the Andes and a relative of the llama.
Vikunja is an Open-Source, self-hosted To-Do list application for all platforms. It is licensed under the AGPLv3.