Best Open Source System Software 2026

System Software

System Windows Mobile GNU General Public License version 3.0 (GPLv3) Mac Clear Filters

Browse free open source System software and projects for Windows Mobile and Mac below. Use the toggles on the left to filter open source System software by OS, license, language, programming language, and project status.

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1

Chameleon

A multi-platform group communication framework for smartphones

Chameleon is a group communication framework. As such, it simplifies building server-less, multi-peer connected applications for smartphones and some PC platforms. It is available in J2ME, J2SE, Android, .NET and .NET Compact Framework platforms.

Downloads: 0 This Week

Last Update: 2013-04-02
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2

Defa Protect HTML5 Video From Download

Prevent and Protect Your HTML5 Video, Music , Audio From Download Free

Defa Protector is A Simple PHP and Wordpress Plugin To Protect and Prevent Video Save As From Browser and Some Video Grabber. There is 100% Guaranteed Protection and There might be some tradeoff but If you care about Digital Rights Management of Your Video and Music Content. This Project is for you. Defa Protector 6.7.1 Revamp Code For Better Performance To The Bone. We almost rewritten this project from scratch.

Downloads: 0 This Week

Last Update: 2018-03-07
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3

DotNetOpenServer SDK

Lightweight fully extendable client/server application framework

DotNetOpenServer SDK is an open source lightweight fully extendable TCP socket client/server application framework enabling developers to create highly efficient, fast, secure and robust cloud based smart mobile device and desktop applications. Why? Unlike most application server frameworks, which are implemented over slow inefficient stateless protocols such as HTTP, REST and SOAP that use bulky ASCII data formats such as JSON and XML, DotNetOpenServer has been built from the ground up with highly efficient stateful binary protocols.

Downloads: 0 This Week

Last Update: 2016-11-08
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4

Unreal Speccy portable

Portable ZX-Spectrum emulator based on UnrealSpeccy 0.37.3 by SMT

Portable ZX-Spectrum emulator supports Z80 128K (Pentagon) AY/YM, Beeper, Beta Disk, Tape, Kempston Joystick/Mouse, Snapshots, Replays. Supported formats: sna, z80, szx, rzx, tap, tzx, csw, trd, scl, fdi, zip. Created to be ported to many platforms such as Windows/Linux/Mac/Symbian/Dingoo A320/Android/iOS/PSP/Raspberry Pi, ...

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Downloads: 0 This Week

Last Update: 2025-05-28
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