head to head · open source
one-api vs WireMock.Net
one-api has 36,932 GitHub stars, 6,867 forks, 1,036 open issues and last shipped 8 months ago. WireMock.Net has 1,680 stars, 240 forks, 21 open issues and last shipped 8 days ago. one-api leads on adoption by 2,098% (36,932 vs 1,680 stars). one-api is written in JavaScript under MIT; WireMock.Net is written in C# under Apache-2.0. one-api has attracted 19% as many forks as stars, WireMock.Net 14%. WireMock.Net 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
| one-api | WireMock.Net | |
|---|---|---|
| GitHub stars | ★ 37K | ★ 1.7K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | C# |
| Last push | 2026-01-09 | 2026-09-10 |
| Forks | ⑂ 6.9K | ⑂ 240 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick one-api if
- You weight community size — 37K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick WireMock.Net if
- You want the WireMock.Net feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C#
- You evaluated both and WireMock.Net fits your workflow better
About one-api
One API is a self hosted LLM API management and key redistribution system that exposes many model providers through the standard OpenAI API format, aimed at developers, teams and operators who want a single endpoint, a single key model and a single quota surface across providers.
read the full one-api overview →
About WireMock.Net
WireMock.Net is an open source C .NET library and mock server for stubbing and mocking web HTTP responses. It lives in the .NET ecosystem and is a developer tool for API development and testing. The project is based on mock4net and mimics functionality from the original Java based WireMock, while providing extended and different functionality. Documentation is available at wiremock.org/dotnet.
read the full WireMock.Net overview →
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Frequently asked questions
Is one-api or WireMock.Net more popular?
one-api has 36,932 GitHub stars and WireMock.Net has 1,680. one-api has the larger community by that measure.
Are one-api and WireMock.Net free?
Both are open source. one-api is licensed under MIT and WireMock.Net under Apache-2.0. Neither carries a licence fee.
What is the difference between one-api and WireMock.Net?
one-api is written in JavaScript and WireMock.Net in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, one-api or WireMock.Net?
Choose one-api if you want the larger community (36,932 stars) or its MIT licence terms. Choose WireMock.Net if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.