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Open Source Windows Software

  1. A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.
  2. FreeCAD is a general purpose parametric 3D CAD modeler. The development is completely Open Source (LGPL License).


  3. Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most secure end-to-end-encryption.
  4. Duplicati is a backup client that securely stores encrypted, incremental, compressed backups on local storage, cloud storage services and remote file servers. The Duplicati project was inspired by Duplicity and had similar functionality until 2008.
  5. Jami (formerly GNU Ring, SFLphone) positions itself as a potential free Skype replacement
  6. DBeaver - Universal Database Manager and SQL Client. DBeaver is free and open source (GPL) universal database tool for developers and database administrators.
  7. KDE Connect is a project that aims to communicate all your devices. For example, with KDE Connect you can receive your phone notifications on your computer, or just use your phone as a remote control for your desktop.
  8. Ditto is an extension to the standard windows clipboard. It saves each item placed on the clipboard allowing you access to any of those items at a later time.
    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • BSD
    WireGuard is an extremely simple yet fast and modern VPN that utilizes state-of-the-art cryptography. It aims to be faster, simpler, leaner, and more useful than IPSec, while avoiding the massive headache. It intends to be considerably more performant than OpenVPN.
  9. PortableApps.com is a website offering many free, commonly used Windows applications that have been specially packaged for portability. These portable applications can be used from removable media such as USB flash drives.
  10. Zotero is a free, easy-to-use tool to help you collect, organize, share research and cite your research sources directly in your favourite word processor, with 300 MB free online storage.
  11. Eclipse is an extensible development platform with runtimes and application frameworks for building, deploying and managing software across the entire software lifecycle.
  12. Cryptomator provides transparent, client-side encryption for your cloud. Protect your documents from unauthorized access. Cryptomator on the desktop is free and open source software, so you can rest assured there are no backdoors.