httpYac
httpYac: A capable desktop API client for developers who want open-source CLI workflows. Ranked #14 of 38 in API Clients by our editors (7.7/10); pricing: Free plan; best for open-source CLI and desktop users.
At a glance
- Editor score7.7 / 10
- PricingFree plan
- Best forOpen-source CLI and desktop users
- Free planYes
- Paid fromFree
- Automated test runsYes
- Facts checked20 Sep 2026
Where it wins
- Supports REST, SOAP, GraphQL, gRPC, WebSocket, and MQTT requests
- Includes scripting, response assertions, authentication, and CI execution
- Adds Jupyter Notebook documentation and plugin support
Where it doesn't
- Platform coverage is focused on desktop environments
- The workflow centers on VS Code and command-line use
- Its broad protocol coverage may exceed simple REST-only needs
Our verdict on httpYac
httpYac is an open-source API client for creating, executing, and storing request definitions. It is aimed at developers who want a free desktop tool with both a VS Code extension and command-line interface. The product covers REST, SOAP, GraphQL, gRPC, WebSocket, and MQTT requests, giving users one workspace for several API styles. Variables and environment management support repeatable request workflows, while authentication options include OAuth2, AWS, Basic, Digest, and client certificates.
Its strongest distinction is the depth of its request workflow. JavaScript scripting and response assertions support more than simple request execution, and CLI execution brings request files into CI testing. The published feature set also includes request documentation in Jupyter Notebook format, which gives teams a way to document API interactions alongside executable definitions. Plugin support extends the tool beyond its core capabilities, while team workspaces are included in its category coverage. This combination suits developers who want testing, documentation, and automation in the same open-source project.
The main trade-off is platform focus: the listed coverage is desktop-only, with usage organized around VS Code and the CLI. That makes httpYac a strong fit for developers comfortable with editor-based and terminal workflows, particularly those who value open-source software and multiple protocols. It is less suitable for buyers seeking a narrowly focused REST client or a product whose primary experience is outside desktop development tools. Choose httpYac when protocol breadth, scripting, assertions, CI execution, and extensibility matter more than a simpler interface.
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httpYac pricing
httpYac fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| GraphQL support | Yes |
| gRPC support | Yes |
| WebSocket support | Yes |
| Automated test runs | Yes |
| API documentation | Yes |
| Team workspaces | Yes |
| Available platforms | Desktop |
| Pricing | Free plan |
| Website | httpyac.github.io |
| Facts checked | 20 Sep 2026 |
Alternatives to httpYac
- PostmanA broad API workspace spanning requests, testing, mocking, specifications, and delivery workflows.9.4
- SoapUIA mature, testing-focused API client for REST, SOAP, GraphQL, and CI workflows.9.2
- ApidogA broad API workspace for teams that want design, testing, mocks, and CI/CD together.8.8
See all httpYac alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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