ghz
ghz: A focused, free open-source toolkit for gRPC load testing and performance regression checks. Ranked #9 of 24 in gRPC Tools by our editors (7.8/10); pricing: Free plan; best for free gRPC performance testing and benchmarking.
At a glance
- Editor score7.8 / 10
- PricingFree plan
- Best forFree gRPC performance testing and benchmarking
- Free planYes
- Paid fromFree
- Facts checked20 Sep 2026
Where it wins
- Tests unary, streaming, and duplex gRPC calls
- Supports reflection, proto files, and compiled protosets
- Offers concurrency controls and CLI, CSV, JSON, HTML, and InfluxDB output
Where it doesn't
- Its scope is narrower than general-purpose API clients
- Primarily operates as a CLI and Go package
- The complementary web application is in beta
Our verdict on ghz
ghz is an open-source command-line utility and Go package for load testing and benchmarking gRPC services. It suits developers and engineering teams that need to measure service performance, run local tests, or automate performance regression checks in continuous integration. The self-hosted deployment model keeps the tool focused on running tests within existing development and delivery environments.
Its strongest area is gRPC test depth. ghz accepts Protocol Buffer files, compiled protosets, or server reflection, then supports unary, streaming, and duplex calls. Teams can apply constant, step, or line load schedules, configure concurrency and worker schedules, and provide JSON or binary request data. TLS, client certificates, compression, and load balancing options add coverage for service configurations that need more than a basic request loop. A Go package also supports programmatic performance tests alongside the CLI.
Output and workflow flexibility make ghz useful for both interactive runs and automated analysis. Results can be produced as CLI, CSV, JSON, HTML, or InfluxDB line protocol, which supports different reporting and monitoring setups. The trade-off is focus: ghz is built around gRPC performance testing rather than the broader request-building and exploration features associated with general-purpose clients. Choose it for free, specialized gRPC benchmarking, CI performance checks, and programmable tests. Choose an alternative when you need a wider API client experience beyond load testing and benchmarking.
Your product? Our editors can test ghz in depth and publish a review, labelled as paid · from $149/mo →
ghz pricing
ghz fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Deployment model | Self_hosted |
| gRPC-Web support | Not verified |
| Server reflection | Yes |
| Mock server | Not verified |
| Protobuf editor | Not verified |
| Load testing | Yes |
| CI integration | Yes |
| Deployment | Self-hosted |
| Support | Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | ghz.sh |
| Facts checked | 20 Sep 2026 |
Alternatives to ghz
- BanduraA free, cross-platform gRPC tester with strong offline, CLI, and CI coverage.9.4
- KreyaA broad desktop API client for gRPC, REST, GraphQL, WebSocket, and SSE workflows.9.2
- FintXA focused gRPC desktop test bench for invocation, functional checks, mocks, and load testing.8.9
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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