Browse free open source C# Build Tools and projects below. Use the toggles on the left to filter open source C# Build Tools by OS, license, language, programming language, and project status.

  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
    Start Free
  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
    Try Retool free
  • 1
    Oblivion Works
    Wrye Bash has moved to Github! Downloads: https://github.com/wrye-bash/wrye-bash/releases Code: https://github.com/wrye-bash/wrye-bash
    Downloads: 9 This Week
    Last Update:
    See Project
  • 2
    D2D Map Editor enables the rapid creation of tile based map grids. It’s easy to learn and can be used by programmers and non-programmers alike. The maps generated can be deployed in games and applications developed in C++, C#, ActionScript and XML.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 3
    SharpFlash is a third-party tool allowing Flash applications to have more power on operating systems supporting the .NET Framework. It exposes an ActionScript API to allow things like file access, registry access, etc. Written in C#, with a Flash UI.
    Downloads: 0 This Week
    Last Update:
    See Project
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