head to head · open source
OpenAPI-Specification vs Tyk
OpenAPI-Specification has 31,291 GitHub stars, 9,145 forks, 80 open issues and last shipped 12 days ago. Tyk has 10,873 stars, 1,169 forks, 509 open issues and last shipped yesterday. OpenAPI-Specification leads on adoption by 188% (31,291 vs 10,873 stars). OpenAPI-Specification is written in Markdown under Apache-2.0; Tyk is written in Go under a custom or non-standard licence. OpenAPI-Specification has attracted 29% as many forks as stars, Tyk 11%. Tyk was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| OpenAPI-Specification | Tyk | |
|---|---|---|
| GitHub stars | ★ 31K | ★ 11K |
| License | Apache-2.0 | Custom / other |
| Written in | Markdown | Go |
| Last push | 2026-10-22 | 2026-11-02 |
| Forks | ⑂ 9.1K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenAPI-Specification if
- You weight community size — 31K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Markdown
- You value the larger contributor base for long-term maintenance
pick Tyk if
- You want the Tyk feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Go
- You evaluated both and Tyk fits your workflow better
About OpenAPI-Specification
The OpenAPI Specification The OpenAPI Specification is a community driven open specification within the OpenAPI Initiative, a Linux Foundation Collaborative Project. The OpenAPI Specification (OAS) defines a standard, programming language agnostic interface description for HTTP APIs. This allows both humans and computers to discover and understand the capabilities of a service without requiring access to source code, additional documentation, or inspection of network traffic. When properly defined via OpenAPI, a consumer can understand and interact with the remote service with a minimal amount of implementation…
read the full OpenAPI-Specification overview →
About Tyk
Documentation Forum Blog About Tyk API Gateway Tyk Gateway is the cloud native, open source, enterprise ready API Gateway supporting REST, GraphQL, TCP and gRPC protocols. Built from the ground up, as the fastest API Gateway on the planet since 2014. Tyk Gateway is provided ‘Batteries included’, with no feature lockout. Enabling your organization to rate limit, auth, gather analytics, apply microservice patterns and more with ease. Tyk runs natively on Kubernetes , if you prefer, thanks to the Tyk Kubernetes Operator Everything you need to manage APIs. Follow the simple Get Started guide below 👇 The Enterprise…
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Frequently asked questions
Is OpenAPI-Specification or Tyk more popular?
OpenAPI-Specification has 31,291 GitHub stars and Tyk has 10,873. OpenAPI-Specification has the larger community by that measure.
Are OpenAPI-Specification and Tyk free?
Both are open source. OpenAPI-Specification is licensed under Apache-2.0, and Tyk has no licence declared in this registry. Both are free to self-host.
What is the difference between OpenAPI-Specification and Tyk?
OpenAPI-Specification is written in Markdown and Tyk in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, OpenAPI-Specification or Tyk?
Choose OpenAPI-Specification if you want the larger community (31,291 stars) or its Apache-2.0 licence terms. Choose Tyk if its feature set, stack or Custom / other licence fits better. Both are self-hostable.