Meet Couper
Couper is a lightweight open source API gateway designed to support developers in building and running API-driven Web projects.
Get StartedThe Challenge of Digitalization
Existing IT infrastructures make it hard for many organizations to meet growing customer expectations while at the same time maintaining pace and quality.
The foundation:
your existing infrastructure
Having grown over the years, your existing infrastructure is likely to consist of different IT systems, functioning processes, and different teams. This living microcosm is the foundation of your digital products.
Companies have to provide flexible interfaces to their existing data and processes.
The demand:
convincing applications
Due to rapid technological advancements, changing social trends and large online platforms providing outstanding customer experiences, consumers nowadays have very high standards when it comes to digital applications and services.
To meet their expectations, companies must be able to bring appealing products to market quickly.
The challenge:
delivering quality in time
Adapting your existing infrastructure to steadily changing market demands can have a significant impact on your entire organization. All too often, this results in long development cycles and late product launch.
To clear the path for a sustainable digitalization, you need a flexible solution that allows you to bypass given dependencies.
Couper Supports Your Digital Journey
The Couper architecture creates a flexible connection between digital products and your existing infrastructure.
This allows you to retain proven systems and processes while building apps much faster and delivering immediate value to your customers.
Developed for Your Needs
With 20 years of experience, Couper was developed to support your tactical customer interface development and at the same time enable your strategic system modernization.
Couper is precisely tailored to the needs of front-end development and pays special attention to the non-functional requirements of the customer.
Your Benefits with Couper
- Gain fast and flexible development of single page applications through the provision of dedicated front-end APIs
- Obtain architectural prerequisites for a parallel, step-by-step modernization of your back-end systems
- Add security and observability to your project and meet all non-functional requirements
- Connect legacy IT and delight your developers with modern technology
Frequently Asked Questions
- What is Couper?
- Couper is a lightweight, open source API gateway written in Go. Available at couper.io, it helps developers build and operate API-driven web projects by handling routing, access control, and upstream connectivity in a simple HCL configuration file.
- Is Couper free to use?
- Yes, Couper is free and open source software, licensed under the Apache 2.0 License. The source code is available on GitHub.
- How do I install Couper?
- Couper is available as a Docker container image,
as a binary from GitHub releases,
or via Homebrew:
brew tap coupergateway/couper && brew install couper. - Where can I find the Couper documentation?
- The full documentation is available at docs.couper.io. You can also explore ready-to-use examples in the example repository.
- What makes Couper different from other API gateways?
- Couper focuses on developer experience with a simple, declarative HCL configuration. It is lightweight, cloud native, and purpose-built for front-end API development — combining routing, access control, and observability in a single component with a small resource footprint.
Do You Have Questions?
With 20+ years of experience, Couper solves your digital transformation challenges. We understand the complexity of modern markets and develop customized solutions.