oha
MIT HTTP load generator with realtime TUI (hey-inspired)
Rust / Systems · OSS/MIT · 10.6k
Reviewed 2026-09-12 · last push 2026-10-18 · repo checked 2026-10-19
What's Good
MIT. hatoo/oha. Tiny Rust/tokio load generator inspired by rakyll/hey — QPS, latency histograms, and a realtime ratatui dashboard while the run is hot. Prebuilt binaries + cargo install; optional native-tls / experimental HTTP3 features. Source github.com/hatoo/oha.
The Catch
Vs hey (simple Go hammer), vegeta/k6 (scripted/scenarios), and curl loops: oha is the *interactive TUI load* CLI, not a full performance suite with thresholds-as-code. No browser/Web Vitals story. Point it at staging you own — load tests are still an attack if aimed at someone else.
Verdict
MIT HTTP load TUI. Free forever; hammer your own staging and watch the chart.
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Markdown
[](https://stackgems.com/gems/oha)
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