Side by side
MockServer vs Wilma
Both stand on service virtualization software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APILinuxMac+3
MockServer covers mocking, proxying, verification, and chaos testing across a broad set of protocols and deployment options. Its always-reachable health probes are a security detail to account for when configuring an instance.
Visit MockServer Free plan Self-hostedWeb
Wilma combines traffic proxying, service stubbing, and message inspection for development and testing. Teams should plan for its Java runtime requirements and GPLv3-or-later license.
Visit WilmaThe facts
| MockServer | Wilma | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Linux, Mac, Self-hosted, Web, Windows | Self-hosted, Web |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | mock-server.com | epam.github.io |
| On service virtualization software | #9 of 21 | #13 of 21 |
MockServer: what it does well
- Free, self-hosted deployment with no SaaS account
- Mocks and validates against OpenAPI or Swagger
- Imports HAR files and Postman collections
- Supports multiple official language clients
- Dashboard shows live logs and recorded traffic
What to know first
- Status and readiness probes need no authentication
- HTTP/3 support is experimental and uses a separate UDP port
Wilma: what it does well
- Runs as a proxy, stub, or mixed mode.
- Stub settings can change while Wilma is running.
- Custom interceptors and response formatters are supported.
- Docker images and release ZIP files are available.
What to know first
- Wilma requires JRE 11.
- Message Search requires JDK 11.
- The license states there is no warranty.
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