Office
Etherpad
Etherpad is a highly customizable open source online editor providing collaborative editing in really real-time.
Nextcloud
Nextcloud is a suite of client-server software for creating and using file hosting services.
WeKan
Experience efficient task management with WeKan - the Open-Source, customizable, and privacy-focused kanban.
HomeBank
HomeBank is a free software that will assist you to manage your personal accounting.
CryptPad
CryptPad is a collaborative office suite that is end-to-end encrypted and open-source.
Paperless-ngx
Paperless-ngx is a document management system that transforms your physical documents into a searchable online archive.