Open-source BlazeMeter alternatives: 8 performance and load testing tools
Metrics as of , from the GitHub or GitLab API of each repository. Refreshed monthly.
About BlazeMeter
BlazeMeter's site describes continuous functional and performance testing, including performance testing, API testing and service virtualization. source: BlazeMeter home page
BlazeMeter is not listed on FreeQATools: the directory lists only tools released under an OSI-approved license (see the inclusion rules). No metrics are shown for it.
Order: Listed tools in the category that are not archived, by GitHub stars. Each line gives one fact from the tool's own documentation, with its source.
8 open-source tools
k6: Protocols: HTTP, WebSockets, gRPC, browser; more through extensions. 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
Vegeta: Protocols: HTTP, with HTTP/2 to servers that support it and h2c. source: README
hey: Protocols: HTTP, including HTTP/2 endpoints. source: README
oha: Protocols: HTTP 0.9, 1.0, 1.1, 2 and 3 (HTTP/3 behind an experimental build feature). source: README
Apache JMeter: Protocols: HTTP(S), SOAP/REST, FTP, JDBC, LDAP, JMS, SMTP/POP3/IMAP, TCP, Java objects, native commands. source: README
Artillery: Protocols: HTTP, WebSocket, Socket.io, gRPC, Kinesis and more. 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 |
| Apache JMeter | 9,5421 | 2024-01-091rel/v5.6.3 | 2026-09-121 | Apache-2.0 | Java | active |
| Artillery | 9,0811 | 2026-08-141artillery-2.0.34 | 2026-09-201 | MPL-2.0 | TypeScript | active |
1 Fetched from the GitHub or GitLab API on . Hover a value for its own date.