O

oha

HTTP load generator with a realtime terminal UI

Visit Official Site ↗

About oha

oha is a small HTTP load generator written in Rust that sends load to a web application while showing a realtime terminal interface. It supports HTTP/1, HTTP/2 and experimental HTTP/3, rate limiting with latency correction, burst modes, dynamic URLs generated from regex, and text, JSON or CSV result output.

oha website preview

Homepage preview of oha

Live preview of github.com via the WordPress mShots service — it can take a few seconds to generate on a first visit.

oha: strengths & things to check

Strengths

  • Completely free to use — this directory lists no paid plan for it.
  • Covers load testing, http, benchmark, rust — see the focus areas listed in its key facts.
  • Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

  • Free tools can change their model or shut down — avoid locking critical work into it without an export path.
  • Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
  • It is one of 1288 tools in the Developer Tools category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

oha pricing

Pricing modelFree — listed in this directory as a free tool, with no paid plan required to use it.
Free accessYes — fully free
Current plan pricesListed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official sitegithub.com

oha key facts

oha FAQ

How much does oha cost?

Free — listed in this directory as a free tool, with no paid plan required to use it. Current plans and prices are listed on the official site (github.com).

What is oha used for?

HTTP load generator with a realtime terminal UI Its focus areas in the Developer Tools category: load testing, http, benchmark, rust.

Where can I try oha?

On its official site, github.com — the Visit Official Site button above goes straight there.

oha vs alternatives

ohaheyVegetaxh
PricingFree — listed in this directory as a free tool, with no paid plan required to use it.Free — listed in this directory as a free tool, with no paid plan required to use it.Free — listed in this directory as a free tool, with no paid plan required to use it.Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areasload testing, http, benchmark, rustload testing, http, benchmark, cliload testing, http, benchmark, gohttp, cli, rust, open source
Official sitegithub.comgithub.comgithub.comducaale.com
Directory statusListedListedListedListed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Developer Tools category

Editors, platforms, and services developers rely on to build and ship software. The Developer Tools category on Tools Hub currently lists 1288 tools. Alongside oha, it includes Vegeta, hey, Edit, SoapUI.

FreeDeveloper Toolsload-testinghttpbenchmarkrust

Alternatives to oha

Tools in the same Developer Tools category that share focus areas with oha — worth comparing before you commit:

HDeveloper Tools

Tiny HTTP load generator, an ApacheBench replacement

Freeload-testinghttpbenchmarkcli
VDeveloper Tools

HTTP load testing tool with constant request rates

Freeload-testinghttpbenchmarkgo
XDeveloper Tools

Friendly fast HTTP client as a Rust rewrite of HTTPie ideas

Freehttpclirustopen-source
ADeveloper Tools

Load testing and performance measurement for services

Freeload-testingperformanceopen-source
ADeveloper Tools

Load testing toolkit for APIs and services

Freemiumload-testingapiopen-source
ADeveloper Tools

Terminal API client that is free, offline and account-less

Freeapi-clientterminalrustoffline

More in Developer Tools

Comparing tools in the Developer Tools category? These related listings are worth a look: Vegeta — HTTP load testing tool with constant request rates; hey — Tiny HTTP load generator, an ApacheBench replacement; Edit — Simple terminal text editor from Microsoft, inspired by MS-DOS Editor.

VDeveloper Tools

HTTP load testing tool with constant request rates

Freeload-testinghttpbenchmarkgo
HDeveloper Tools

Tiny HTTP load generator, an ApacheBench replacement

Freeload-testinghttpbenchmarkcli
EDeveloper Tools

Simple terminal text editor from Microsoft, inspired by MS-DOS Editor

Freetext-editorterminalrustmicrosoft
SDeveloper Tools

API testing tool for SOAP, REST and GraphQL services

Freeapi-testingsoapresttesting
XDeveloper Tools

Friendly and fast command-line tool for sending HTTP requests

Freehttp-clientclirustapi-testing
CDeveloper Tools

Native macOS code editor, open source and free forever

Freecode-editormacosnativeopen-source