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Open Source Windows Software

  1. Tutanota is a free and open source web-mail client that focuses on privacy and security. It has open source iOS and an Android apps.
  2. ONLYOFFICE is an opensource office and productivity suite that enables you to manage documents, ONLYOFFICE Projects, team and customer relations in one place.


    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • WebRTC
    • Python
    • JavaScript
    • Go (Programming Language)
    • Cloudron
    • Java
    • Perl
    Matrix defines a set of open APIs for decentralised communication, suitable for securely publishing, persisting and subscribing to data over a global open federation of servers with no single point of control.
  3. FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge.
  4. Made by the company behind WordPress, Simplenote enables users to take notes, lists, and ideas. These notes are stored on the cloud and are accessible across multiple devices.
  5. PeaZip is free file archiver utility, based on Open Source technologies of 7-Zip, p7zip, FreeArc, PAQ, and PEA projects, for Linux, macOS and Windows.
  6. WinSCP, a popular free SFTP and FTP client for Windows, copies files between a local and remote computer. It supports also FTPS, SCP and WebDAV. It offers easy to use GUI for all common file operations and a powerfull automation with .NET assembly.
  7. Raindrop.io saves not just bookmarks but associated content depending on page type.
  8. PuTTY is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket connection. It can also connect to a serial port.
  9. UNetbootin (Universal Netboot Installer) is a cross-platform utility that can load Linux and other distributions to a partition or USB drive.
  10. This application provides display and control of Android devices connected on USB and WiFi. It does not require any root access. It works on GNU/Linux, Windows and MacOS.
  11. Greenshot is a light-weight screenshot tool optimized for productivity with Optical Character Recognition (OCR) support.
  12. Wireshark is the world's foremost network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network. It is the de facto (and often de jure) standard across many industries and educational institutions.
  13. Multi-platform, fast and packed with features, Okular allows you to read PDF documents, comics and EPub books, browse images, visualize Markdown documents, and much more.