Windows software · independent developer

Software you can actually trust.

Independent Windows applications for cybersecurity, digital investigations and system utilities. Light on your system, clean in design, and supported by the person who wrote them.

Browse software View GitHub
VPN connected
24 results found
Ubuntu 24.04 running

Functionality first. Design with purpose. Build for reliability. Software that is useful, straightforward to operate, and consistent in both its design and behavior.

The lineup

Four tools.
One developer.

  1. Network protection

    Thomsen Shield

    See every connection. Stop the ones you do not trust.

    Buy on DiscordLearn more
    Windows 10 · Windows 11 · .NET · €10 / month
  2. Privacy

    Thomsen VPN

    Your traffic, encrypted. One click to connect.

    Coming soonLearn more
    Windows 10 · Windows 11 · .NET · €10 / month
  3. Investigations

    Thomsen OSINT

    Public information, organized into one clear picture.

    Buy on DiscordLearn more
    Windows 10 · Windows 11 · WPF · €10 / month
  4. Virtualization

    Thomsen VM

    A full machine, running inside your desktop.

    Free on GitHubLearn more
    Windows 10 · Windows 11 · .NET · Free
Built with

Tools of the trade.

Languages

  • TypeScript
  • Rust
  • JavaScript
  • CSS
  • HTML

Frameworks

  • .NET
  • WPF
  • XAML
  • React
  • Tauri

Focus

  • Windows development
  • Cybersecurity
  • OSINT
  • Networking
  • Desktop apps

Tools

  • Git
  • GitHub
  • Visual Studio
  • VS Code
  • Windows
Why Thomsen Software

Quiet on your system.
Clear in your results.

// Windows 10 and 11
var shield = new Shield();
shield.Theme = "";
await shield.StartAsync();

Native Windows apps

Every program is written for Windows 10 and 11. They start fast, run locally and behave like the rest of your desktop.

Built with security in mind

Shield, VPN and OSINT come from a cybersecurity background. Each feature has a practical job, from protecting a connection to organizing an investigation.

Clean, clear interfaces

Functionality first, then design with purpose. You see what the software does without digging through menus.

Built to be reliable

Planned, tested and prepared for stable public releases before they reach you, with code that stays maintainable.

Support from the developer

Questions go straight to the person who wrote the software.

FAQ

Before you download.

Short answers to the things people ask first.

Still unsure?Ask on Discord and you will talk to the developer.Ask a question
How do I get the software?

Each program is released as a Windows installer once it is ready. Downloads will be listed on its product page, and new versions appear in the same place.

Which versions of Windows are supported?

Thomsen Software is built for Windows 10 and Windows 11.

Is Thomsen Shield a replacement for antivirus?

No. Thomsen Shield monitors network connections, flags suspicious traffic and manages network protection. Use it alongside your existing security tools.

What is Thomsen OSINT used for?

It helps you gather and organize publicly available information so investigations stay structured. Only use it where the law allows.

What if something does not work on my computer?

Message the developer on Discord or open an issue on GitHub. Include your Windows version and what you were doing when it happened.

Community

Come build with us on Discord.

Sneak peeks, changelogs, help and support, answered by the developer.

  • Support
  • Updates
  • Sneak peeks
Join the Discord