Shaarli is a minimalist, database-free self-hosted bookmarking and link sharing service. It is designed to be personal (single-user), fast and handy.
Taiga is a project management platform for agile developers & designers and project managers who want a beautiful tool that makes work truly enjoyable. It's free, open source and simple to use.
Wallabag is a self hostable application for saving web pages: Save and classify articles. Read them later. Freely.
From project planning and source code management to CI/CD and monitoring, GitLab is a single application for the entire DevOps lifecycle.
pfSense is an open source firewall/router computer software distribution based on FreeBSD.
Proxmox Virtual Environment is an open-source server virtualization environment. It allows deployment and management of virtual machines and containers
Paperless-ngx is a document management system that transforms your physical documents into a searchable online archive so you can keep, well, less paper.
openmediavault is the next generation network attached storage (NAS) solution based on Debian Linux.
ownCloud is a free and open source file hosting service. It also supports extensions for online document editing, calendar and contact synchronization. It's a safe home for all your data.