Easy-to-use licensing library for .NET apps

In plain words

This free, open-source .NET library enables developers to add activation key licensing to their applications. It integrates with .NET projects via NuGet and includes quick start documentation to get running in minutes. The library is designed for developers building non-free .NET applications who need a straightforward way to manage product licensing through activation keys.

written from the facts on this page · September 2026

From the sources

This free, open-source .NET library allows you to license your non-free applications through activation keys. - SNBSLibs/Licensing.ActivationKeys

• 
  Add license key verification to your apps2020 · github.com · ▲131

  Open Source License Key Generation and Verification Tool written in Go - furkansenharputlu/f-license

• 
  Keygen – A dead-simple software licensing API built for developers2017 · keygen.sh · ▲190

  Keygen is a powerful software licensing API for desktop apps, on-premise software and other software products written in Go, Rust, JS, C/C++, C#, Swift, Java, Kotlin and more.

• 
  I've built a C# IDE, Runtime, and AppStore inside Excel2023 · querystorm.com · ▲670

  The project is called QueryStorm. It uses Roslyn to offer C# (and VB.NET) support in Excel, as an alternative to VBA. I've posted about it before, but a lot has changed since then so figured I'd share an update. The current version includes a host of new features, namely a C# debugger, support for NuGet packages, and the ability to publish Excel extensions to an "AppStore" (which is essentially a NuGet repository). The AppStore can be used by anyone with the (free) runtime component. Another great addition is the community license, which is a free license for individuals and small companies…

• 
  Keydock2018 · keydock.app · ▲133

  Painless license key generation for products you develop.

• 
  Keygen2016 · keygen.sh · ▲252

  A dead-simple software licensing API built for developers

• 
  Gotkey.io2023 · ▲63

  Focus on your software - let us handle your keys, releases

• 
  /dev/null▲484

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

• 
  GPT-4▲1,160

  More accurate, less cringe, smoother & useful daily chats!

  AI · 2023 · openai.com

• 
  Collato▲972

  One AI search to find anything instantly, across all apps

  AI · 2023

• 
  Typing Mind▲826

  Chat with AI using your API keys. Pay only for what you use. ChatGPT, Gemini, Claude, and other LLMs supported. The best chat LLM frontend UI for all AI models.

  AI · 2023 · typingmind.com

• 
  Arc for iOS▲825

  Meet the internet again

  Work · 2023 · apps.apple.com

• 
  Sequoia▲726

  Personalized men's sexual health with on-demand experts

  Life & fun · 2023 · sequoia.health

• BI
  BBC “In Our Time”, categorised by Dewey Decimal, heavy lifting by GPT▲688

  I'm a big fan of the BBC podcast In Our Time -- and (like most people) I've been playing with the OpenAI APIs. In Our Time has almost 1,000 episodes on everything from Cleopatra to the evolution of teeth to plasma physics, all still available, so it's my starting point to learn about most topics. But it's not well organised. So here are the episodes sorted by library code. It's fun to explore. Web scraping is usually pretty tedious, but I found that I could send the minimised HTML to GPT-3 and get (almost) perfect JSON back: the prompt includes the Typescript definition. At the same time I…

  AI · 2023 · genmon.github.io