Vegeta vs NeoLoad

Free and open source

Quote on request

Free and open source. You pay in engineering time and CI minutes.

Enterprise licensing by peak virtual users, negotiated annually.

Everything, self-hosted

Free edition limited to a small number of virtual users.

Established

OSS community · since 2013

Established

Tricentis · since 2005

• Constant-rate model avoids the coordinated-omission problem that distorts VU-based tools.
• Single static binary, trivial to run anywhere.
• Composable output for scripting and pipelines.

• Handles enterprise protocols such as SAP GUI and Citrix that open-source tools cannot.
• APM correlation makes root-cause analysis much faster than latency graphs alone.
• Both GUI design and as-code authoring, so mixed-skill teams can share a suite.

• No scenarios or session state — one target list, one rate.
• No GUI or built-in reporting beyond plots.
• Go library usage required for anything sophisticated.

• Expensive, with a procurement-scale sales process.
• Overkill for a straightforward web or API workload.
• Proprietary scripts do not port to other tools.

Backend engineers who want rigorous constant-rate measurements of an endpoint.

Large enterprises performance-testing SAP, Citrix or Oracle estates.