Free Software for Linux
Tor Browser
Tor Browser is free and open-source software that guarantees anonymity online through the onion router. It enhances your security and safety while using the internet and is a favorite choice for people who want to browse the web anonmously. The Tor Browser helps you anonymize publishing, web surfing, instant messaging and other functions, using the TCP protocol.
Openswan
Openswan has been a popular VPN alternative for Linux users since2005. It is an IPsec implementation with support for most of its extensions (RFC and IETF drafts), even IKEv2, NAT Traversal, X.509 Digital Certificates and more. Openswan comes packages with various Linux distributions, including Gentoo, Fedora, Ubuntu, Red Hat and others.
PocketBase
PocketBase is an free and open source backend in 1 file with real-time database, authentication, file storage and admin dashboard. It's written in the programming language Go and users SQLite as a database. With PocketBase it is super simple to get your backend web application up and running. This allows you as a developer to focus more on the frontend and the content of your application. PocketBase also integrates well with frontend technologies Flutter, Svelte, Angular, React and Vue.
Sailfish OS
Sailfish OS is a European developed mobile operating system that offers exlusive licensing model for local implementations. Sailfish OS provides a deeper level of security including features, such as Mobile Device Management (MDM), fully integrated VPN solutions, enterprise WiFi, data encryption, and better and faster performance. Allowing you to enjoy a privacy focused and secure operating system for your mobile devices.
GOG Galaxy
With GOG Galaxy you can organize your games across platforms into one functional and beautiful library. The software allows you to import all your games from PC and consoles, build and organize them into one master collection. Within the user interface you can keep track of all your achievements, hours played and games owned, combined across platforms, and install and launch any PC game you own, no matter the platform.
TigerVNC
TigerVNC is a high-performance, cross-platform implementation of VNC (Virtual Network Computing). The TigerVNC client/server application allows you to launch and interact with graphical applications on remote machines over the internet or a local network. TigerVNC provides the levels of performance necessary to run 3D and video applications, and it attempts to maintain a common look and feel and re-use components, where possible, across the various platforms that it supports. TigerVNC also provides extensions for advanced authentication methods and TLS encryption.
Gnome Authenticator
Gnome Authenticator is a GNOME-based two factor authentication application built for Linux-based operating systems for both mobile and desktop.
OpenShift
Red Hat OpenShift is the hybrid cloud platform that contains a family of containerization software products developed by Red Hat. With OpenShift you can manage With OpenShift you can manage Kubernetes containers with full-stack automated operations to manage hybrid cloud, multi-cloud, and edge deployments. Part of OpenShift is the flagship product is the OpenShift Container Platform, an on-premises platform as a service built around Docker containers orchestrated and managed by Kubernetes on a foundation of Red Hat Enterprise Linux.
PhotoFlare
PhotoFlare is a powerful, free an open-spource cross-platform image editor. With PhotoFlare you can enjoy a simple, yet powerful image editor that gets straight to the point when it comes to improve and modify images. Some of the features of PhotoFlare include basic image editing capabilities, paint brushes, image filters, colour adjustments and more advanced features such as batch image processing. PhotoFlare is written in C++ and utilize the Qt framework for its interface. The software is openly developed by the community and is released under the GPL-3.0 License.