Open Source Software for Linux
ZeroTier
ZeroTier is a global area network provider that enable the creation of secure networks between on-premise, cloud, desktop, and mobile devices. Allowing you to securely connect to any device, anywhere. ZeroTier combines the capabilities of VPN and SD-WAN to simplify network management, allowing organization to connect team members securely withing a decentralized workforce.
Keybase
With Keybase you can communicate with friends and co-worker and store your group’s photos, videos, and documents with end-to-end encryption. Keybase is a free and open-source security app for mobile phones and computers.
VeraCrypt
VeraCrypt is free and open-source disk encryption software. The software is a fork of TrueCrypt 7.1a with enehanced security to the algorithms used for system and partitions encryption making it immune to new developments in brute-force attacks. VeraCrypt is available for Windows, MacOS and Linux.
YaCy
YaCy is a distributed search engine using peer-to-peer technology. The search engine is provided as a native software that has to be downloaded to your computer. It is avalible for macOS, Linux and Windows and is released completley free and open-source.
Replicant
Replicant is a fully free and open source Android distribution designed for freedom, privacy and security. Replicant replaces all proprietary Android components with free and open counterparts allowing you to be in control of your operating system, its software and your personal information and data.
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.
Aseprite
Aseprite is a pixel art software for macOS, Linux and Windows with which you can create animated sprites and graphics. Aseprite is much used tool in the pixel art and indie game development scene where the tool allow designers to gets down to the nitty-gritty and create amazing pixel sprites and animations.
C#
C# is a general-purpose and multi-paradigm programming language. C# encompasses strong typing, lexically scoped, imperative, declarative, functional, generic, object-oriented, and component-oriented programming disciplines.
Apache Storm
Apache Storm makes it easy to reliably process unbounded streams of data for real-time processing. It is a distributed stream processing computation framework written predominantly in the programming language Clojure. The software is released free and open-source under the Apache License. In a nutshell, Apache Storm does to real-time processing, what Apache Hadoop did to bactch processing. Large corporations like Weather Channel, FullContact, Twitter, Yahoo, Spotify, and Alibaba use and trust Apache Storm for big data analytics with fault-tolerance and fast data processing.