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Spec-kit
A toolkit designed to simplify and accelerate Spec-Driven Development, helping developers create, manage, and implement specifications efficiently.
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2 Open Source Alternatives to Swagger
Looking for an open-source alternative to Swagger? Below are 2 community-built tools that offer similar functionality — all free, open source, and ready to use or self-host. Ranked by GitHub stars.
Frequently asked questions
What are the best open-source alternatives to Swagger?
The top picks from this list are Spec-kit, Mkinf — all maintained, free to use, and self-hostable.
Are these alternatives to Swagger free?
Yes. Every tool listed here is open source and free to use. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Can I self-host an alternative to Swagger?
Most of the alternatives listed are self-hostable. Check each tool's page for hosting details, system requirements, and licensing terms.
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