Vegeta alternatives: 8 open-source performance and load testing tools
Metrics as of , from the GitHub or GitLab API of each repository. Refreshed monthly.
About Vegeta
Vegeta is a listed performance and load testing tool: HTTP load testing CLI and Go library that sends requests at a constant rate with text, JSON and histogram reports.
Order: Listed tools in the same category, with tools in the same primary language (GitHub API) first, then by GitHub stars. Each line gives one fact from the tool's own documentation where it differs from what Vegeta's documentation states, with its source.
8 alternatives to Vegeta
k6: Protocols: HTTP, WebSockets, gRPC, browser; more through extensions. source: README
hey: Protocols: HTTP, including HTTP/2 endpoints. source: README
ali: Protocols: HTTP, including HTTP/2 where the server supports it. source: README
Fortio: Protocols: HTTP, gRPC, TCP, UDP. source: README
ghz: Protocols: gRPC. source: README
Lighthouse: Test authoring format: Config file via --config-path; custom audits and gatherers written as extensions. source: README
Locust: Protocols: HTTP; other protocols and systems through user-written clients. source: README
oha: Protocols: HTTP 0.9, 1.0, 1.1, 2 and 3 (HTTP/3 behind an experimental build feature). source: README
Repository metrics
| k6 | 31,5481 | 2026-09-211v2.3.0 | 2026-09-221 | AGPL-3.0 | Go | active |
|---|---|---|---|---|---|---|
| Lighthouse | 30,7991 | 2026-09-181v13.5.0 | 2026-09-181 | Apache-2.0 | JavaScript | active |
| Locust | 28,1771 | 2026-09-1712.46.6 | 2026-09-211 | MIT | Python | active |
| Vegeta | 25,2001 | 2025-10-311v12.13.0 | 2026-02-161 | MIT | Go | slow |
| hey | 20,2761 | 2026-01-101v0.1.5 | 2026-01-101 | Apache-2.0 | Go | slow |
| oha | 10,5531 | 2026-08-231v1.16.0 | 2026-09-101 | MIT | Rust | active |
| ali | 3,9401 | 2026-01-191v0.8.0 | 2026-01-191 | MIT | Go | slow |
| Fortio | 3,7271 | 2026-08-291v1.75.3 | 2026-08-291 | Apache-2.0 | Go | active |
| ghz | 3,3541 | 2025-12-071v0.121.0 | 2026-09-011 | Apache-2.0 | Go | active |
1 Fetched from the GitHub or GitLab API on . Hover a value for its own date.