Open Source Software for Linux
RetroArch
With RetroArch you can run emulators, game engines, video games, media players and other applications. RetroArch is a free and open-source frontend developed specifically for emulation. RetroArch allows you to play classic games on a wide range of computers and consoles through its slick graphical interface. The project is community developed and the software is released under the GNU General Public License v3.
SQLiteStudio
SQLiteStudio is a SQLite database manager with an intuetive user interface. It provides a pretty-print code formatter, marks syntax errors. Allowing you to easily view, query and manage data in your SQLite database. SQLiteStudio is released as free and open source software under the GNU General Public License.
Bitmessage
Bitmessage is a decentralized, encrypted, peer-to-peer, trustless communications protocol. With Bitmessage you can send encrypted messages to a person, or to multiple subscribers.
Concurrent Versions System
CVS (Concurrent Versions System) is a version control system, an important component of Source Configuration Management (SCM). Using it, you can record the history of sources files, and documents. It fills a similar role to the free software RCS, PRCS, and Aegis packages. CVS is a production quality system in wide use by organization around the world to organize and manage the creation of software projects. The system is useb by proprietary and free software projects alike.
Git
Git is a free and open source distributed version-control system for tracking changes in source code during software development. The tool is created by Linus Torvalds, the creator of Linux, and is used by virtually every software project today. With Git, developer can track changes in any sets of files in a project and coordinate the team to develop in a non-linear workflow to achieve maximum efficiency.
Bluefish Editor
The Bluefish Editor is a free and powerful editor that is used by programmers and web developers. Bluefish supports a handfull of programming and markup languages including HTML, XHTML, CSS, XML, PHP, C, C++, JavaScript, Java, Go, Vala, Ada, D, SQL, Perl, ColdFusion, JSP, Python and Ruby. The software is developed openly and is released for free under the GNU GPL license.
OpenBazaar
OpenBazaar is a peer to peer marketplace that allow you to do online commerce without middle men. The decentralized application connects you with people directly over a peer to peer network. Allowing you to easily setup a store front and start accepting cryptocurrency for your goods and services. There are no fees involved in transactions with OpenBazaar and the platform support Bitcoin, Bitcoin Cash, Litecoin, and Zcash.
Avidemux
Avidemux is a free and open-source, non-linear video editor designed for simple cutting, filtering and encoding tasks. It supports many file types, including AVI, DVD compatible MPEG files, MP4 and ASF, using a variety of codecs. The goal of Avidemux, according to the developers is to create a simple tool for simple video processing tasks and to allow users to do elementary things in a very straightforward way.
openSUSE
The makers' choice for sysadmins, developers and desktop users. openSUSE, formerly SUSE Linux and SuSE Linux Professional, is a free and open-source Linux distribution. openSUSE is openly developed by SUSE Software Solutions Germany GmbH and the community.
GNU Emacs
GNU Emacs is an extensible and customizable, free and open source text editor. It was created by GNU Project founder Richard Stallman and has been dubbed "the most powerful text editor available today". At the core of GNU Emacs is an interpreter for Emacs Lisp, a dialect of the Lisp programming language with extensions to support text editing. Which allows users to extend and customize GNU Emacs to their heart's content.