ghz vs Granc

ghz is a command-line utility and Go package for load testing and benchmarking gRPC services, including local debugging and performance regression checks in CI. Tests can define a service with a.proto file, a compiled protoset bundle, or server reflection, and exercise unary, streaming, or duplex calls using JSON or binary data. Load schedules include constant, step, and linear request rates. Go templates can generate request data and metadata for each call using values such as worker ID, request number, method name, and timestamps. The CLI can emit summary, CSV, JSON, pretty JSON, HTML, Prometheus text exposition, and InfluxDB line protocol results. Documentation also covers InfluxDB output, Prototool, and prebuilt Grafana dashboards. The complementary ghz-web application is labeled beta; it stores reports in projects for viewing and comparison over time, and supports SQLite, MySQL, or PostgreSQL storage. It accepts reports through ingest endpoints. The project is identified as Apache-2.0 licensed. Installation options include prebuilt executables, Homebrew, and building from source. The CLI is listed at free; the web companion is beta.

Granc is a free, open-source Linux command-line tool written in Rust for dynamic gRPC calls. It sends JSON payloads without requiring service Protobuf files to be compiled into the client, translating JSON to Protobuf and back at runtime. Using a descriptor, it detects unary, server-streaming, client-streaming, and bidirectional RPCs. Schemas can come from server reflection or a local binary FileDescriptorSet file. Commands list services and describe services, messages, and enums. Granc also creates static Markdown documentation cross-linked between services and types. Requests may include custom headers such as authorization or tracing metadata, and JSON is validated before transmission. The core logic is available as a separate library crate for integration tests, proxies, and automation tools. Installation is documented with cargo install --locked granc. The project has moved to Codeberg, while its GitHub repository was archived on March 9, 2026. It is offered under Apache License 2.0 or MIT. TLS support with configurable roots and client identity is on the roadmap.