What our customers think about Keygen

I was releasing my first VST plugin and licensing seemed really tricky at first. I went with Keygen and within just 2 months I had over 1,000 active licenses - with absolutely zero problems. The setup was smooth, the platform handled everything seamlessly. Highly recommend Keygen to any developer launching their first plugin!

When we needed a licensing solution for our docker image, we turned to Keygen after looking at several options and have no regrets! We got lots of support during implementation and haven't had issues since, we've even upgraded our plan already due to our usage growing. It's fantastic in that it gives you peace of mind and let's you focus on your core product.

We are using Keygen to provide licensing in Eddytor, which is a desktop application built in Rust. The API works great and it has ease up the process controlling clients connected with a license, helping us split between trial and paying customers. I would recommend Keygen to every programmer looking out for a platform to handle licensing.

At P V X Λ I, we build advanced software tools for solar power plant engineering, and Keygen.sh has been a game-changer in how we manage licensing and entitlements. Their API-first approach, excellent documentation, and rock-solid reliability have allowed us to implement flexible licensing models with minimal overhead. We especially appreciate how easy it is to automate everything—from key provisioning to usage tracking—across our SaaS and desktop applications. The support team has also been responsive and genuinely helpful. Keygen feels like a modern, developer-first company that just gets it. Highly recommended for any software business that values scalability and control.

We use Keygen to license a Windows-native AI product with strict machine-fingerprint enforcement. Their team was extremely responsive; even on evenings and weekends when most of our issues occurred. They were very patient with us as first-time users, especially since we caused most of our own problems. In spite of that, the Keygen folks were kind and quickly helped us resolve launch-blocking issues. Bottom line: Keygen gave us the control we needed with clear guardrails. The product is solid, the guidance direct, and the support fast when it mattered.

Keygen is the ultimate software licensing solution. The API is straight forward, modern by design, well-documented and comes with excellent sample code for various licensing use cases. The product itself supports and documents many different licensing models. Keygen is not just an excellent product, it's also a great guide to software licensing as a whole. With Keygen, gdotv Ltd successfully implemented a future-proof, flexible license mechanism for its software, built with the ElectronJS framework. Thanks to Keygen's flexible and feature-rich licensing product, our software was able to start as a free, open beta release and seamlessly transition to a commercial (Free Trial/Pro version) release with no user downtime or impact. The Stripe integration documentation and code samples provided by Keygen allowed implemented a secure, straight-forward payment infrastructure in just a matter of days. Keygen's pricing is extremely attractive compared to other solutions. It is also very straight forward. The support from staff is top-notch with rapid response times. Using Keygen our development costs (time and money) for licensing were considerably lower than expected, and our time to implementation was days, instead of weeks or months. I can't recommend Keygen enough for any software development team looking to implement a licensing model. Thanks for this great product!

Keygen is a great product. It has been a pleasure to work with it, as it allowed us to quickly and effectively implement both licensing and distribution for our product in a very short amount of time. The functionality is vast, yet it was straightforward to tailor to our use case. The API is easy to use, with outstanding documentation, and the choice to go open-source gives us the confidence that we'll be able to rely on Keygen for the foreseeable future.

We’re RESTORECELL SOLUÇÕES TECNOLÓGICAS, creators of the UNION SOLUTIONS system. Since adopting Keygen, our startup finally got a solid, secure and well-documented licensing system in place. Integration was smooth thanks to the top-notch documentation and awesome support. We’ve never had a single issue, and today, TECH UNION SOLUTIONS has become a much stronger, more reliable and scalable product. Keygen gave us the power to license our software professionally, using hardware-based activation – ideal for any startup looking to grow with confidence. We highly recommend it!

Keygen has been a game changer for our product monetization strategy. The simple API, dashboard, and integrations enabled us to add license validation into our product in less than a day. And at quite low cost! Strongly recommend Keygen to anyone considering it.

Integration with our product was fast, all the licensing requirements that we needed were easily implemented with KeyGen. Support to get this done was superb, documentation is clear, and they keep on adding features that we found appealing and thus allow us to improve our licensing model on a regular basis. Pricing is very reasonable and the platform is super reliable (HA)! We could not ask for more from KeyGen!

Keygen is one of the rare products that is legitimately satisfying to work with. It's obvious that the creator cares deeply about the quality of the product. From my own experience there are so many things that work well: - the interface is well designed - the API is flexible, logical and easy to work with - the documentation is clear and comprehensive - there are a wide array of well documented implementation examples on GitHub - the product is in active development - support is responsive and unusually helpful I'm the solo designer/developer of a well known design tool. When I decided to switch to subscription pricing, I began building my own licensing server. Part way through the process I learned about Keygen. After reading through the documentation and speaking to support about my goals, I immediately abandoned my own licensing server in favor of cloud functions and Keygen. I have zero regrets.

Keygen is serial key generator.Using this software we can manage our license key easily. also it does not take long time for that.

The documentation. The node-based approach provides many solutions to a single problem. The control panel is very user-friendly, intuitive, and easy on the eyes. The entire product is very consistent in approach, which makes implementation very intuitive.

Keygen has a price point that works for our business model. Flexible thanks to metadata fields for each object that you can use to customize your product features and requirements. Credit card integration to automate sale workflows. Simple to implement, super strong security and multiple licensing models supported. I've never been so happy to find a new product/service since I discovered Amazon!

Keygen excels in its simplicity, it does exactly what it's supposed to and nothing else. There is very little (if any) bloat which really helps cut down on complexity. It works like a train and the developers are super responsive to questions and feedback.

- Ease of use - Ability to integrate it with most important programming languages - Great support - High security

This product comes with great documentation and an extremely helpful support. As licensing is a highly important topic for a commercial product it's super nice to have somebody available listening to your questions and helping out with good ideas and suggestions. Thanks to the representatives. By far the best part though is that Keygen in the end of the day is nothing else than a Rest service. As such it is possible to integrate it with whatever technology you're using, as long as you can make HTTP requests. Moreover it was the only offering we found to suite our Electron based app.

Documentation & support is really nice. Rest api documentation lives up to the newest standards, just like Stripe and WooCommerce. Easy integration with almost any type of software.

Keygen is enabling us to very quickly get licensing off the ground for a reasonable price and with great customer support to answer any questions. It is easy to use with a well documented API and great examples, particularly for web applications. The documentation is available with examples for multiple programming languages and clearly walks through getting set up. The user control panel is very intuitive to use and manage users and licenses directly!

It is very easy to implement and is very user-friendly. The product is very consistent and integration with all of our product was quick, simple and easy. The support for the software was great and they are very quick to assist with any concerns.

Keygen allowed us to easily distribute and maintain licenses and see their activation status. Support for air-gapped activation is imperative for our use case. There are templates that cover most use cases and usually get you 80% of the way.

For small & fast moving teams, licensing & user management has always been a pain - especially on multiple platforms. I was thrilled to archive our internal license management tools once we discovered and integrated keygen.

It was simple to use, even for someone not from a computer science/programming background. Without it I would not have been able to get trial versions out to potential customers. The pricing structure is also very reasonable especially for our company where we are pre revenue.

When we were developing our first desktop application we identified Keygen as the most cost effective solution for implementing a licensing model. The documentation and Python examples gave us confidence that we would be able to implement a license model that fit our purposes, despite our limited knowledge on the topic at the time.

Keygen's platform and API saved me dozens of hours of coding time. Being new to writing licensing code, using Keygen has allowed me to avoid costly mistakes. I've got a framework that supports my various licensing models and leads me to some best practices in licensing. Excellent documentation and examples as well as a robust dashboard UI.

Keygen is exactly what we were looking for. Our licensing model is a bit cryptic, but we didn't want to build out a whole backend. Keygen's API allowed us to build to our spec, but not worry about the backend system. Awesome.

We have been using Keygen for over two years and are very happy with what Keygen provides. We have been looking for a license management product that is flexible enough to cover all our use cases and at the same time has a robust API that we can integration with our stack. Congrats to the entire Keygen team for making this happen.

We have been using Keygen for more than two years now and it has been fantastic for us. We rarely need to do any upkeep and licensing worldwide just works. We never worry about licensing servers and I couldn't be happier about that.

With Keygen we did not have to build our own solution allowing us to deploy faster. They provide a developer friendly API with a powerful dashboard for management.