Open Source Software for Linux
Mapserver
MapServer is an free and open-source platform for publishing spatial data and interactive mapping applications to the web. Originally developed in the mid-1990’s at the University of Minnesota, MapServer is openly developed and released under an MIT-style license, and runs cross-platform on macOS, Linux and Windows. MapServer is not a full-featured GIS system, nor does it aspire to be.
KDE Connect
KDE Connect is an open source software that enables communication between all your devices. With KDE Connect, you can get all your phone notifications instantly synced to your desktop, so that you never miss that critical message. You can also directly reply to text messages from the computer without having to pick up your mobile device. If you want to share files or links between devices, KDE Connect got you covered as well. As the software allow you to browse and share your phone files remotely or quickly open a link on the other device.
UNetbootin
UNetbootin, short for Universal Netboot Installe is a tool that allows you to easily create bootable USB flash drives to install or try operating systems. This software is designed to be cross-platform and works with Windows, as well as Mac and Linux operating systems.
SocialVPN
SocialVPN or IPOP (IP-Over-P2P) is a user-centric, open-source software virtual network that lets end users build their own VPNs. SocialVPN is capable of establish peer-to-peer (P2P) virtual private networks with the help of a social backend like XMPP server (Jabber-Net or Google chat). Such reliable backend can securely authenticate users, maintain a list of each party and establish secure TLS for X.509 certificate exchange.
Conky
Conky is a system monitor that will display pertinent information on your desktop. When you peel past the top layer, you will see Conky is actually much more than that. The systems widget can neatly display information about your CPU, memory, swap files, harddrive space, computer temperature, upload and download speed.
LineageOS
LineageOS is an open-source Android distribution available for several devices. With LineageOS personalization, privacy and security is on the forefront of development. Allowing you to enjoy an mobile operating system that you are in control of and can personalize to your needs. LineageOS also provides powerful privacy and security tools such as Privacy Guard so that you can be in control of what your apps can do whenever you want.
Gitea
Gitea is a free and open-source software package for hosting software development version control using Git The software is written in Go and is a community managed fork of Gogs, released under the MIT license. With Gitea you can host your very own software project collaboration platform that can handle bug tracking, wikis, code review and team communication.
Signal
Signal is a cross-platform encrypted messaging application that has a strong focus on privacy. The application is developed by Signal Messenger LLC and provides users with features like one-to-one and group messages, which can include files, voice notes, images and videos. The software is famous for being used by the whistleblower and privacy advocate Edward Snowden who once said "I use Signal every day, it is the most scalable encryption tool we have".
Light Table
Light Table is an IDE (integrated development environment) for software development. The application is built by Chris Granger and Robert Attorri and features real-time feedback allowing instant execution, debugging and access to documentation.
VirtualBox
VirtualBox is a free and open-source hosted hypervisor for x86 virtualization, developed by Oracle. The software is used to create virtual machines that can be used for testing, and building software in virtually contained environments. VirtualBox is available for on macOS, Linux. Windows, Solaris and OpenSolaris.