What is Locust?
A Python-based tool for performance testing that simulates thousands of concurrent users to stress-test web applications. Tests are written as plain Python code and can run distributed across multiple machines.
Locust pricing
We don't have Locust's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Locust does
The capabilities that matter for testing tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Test types
- -
- Browser automation
- -
- Built-in assertion library
- -
- Languages
- Python
- Mocking / stubbing
- -
- Snapshot testing
- -
- Parallel execution
- ✓
- Code coverage
- -
- Watch mode
- -
- CI integration
- -
Platform & deployment
Independently observed- CLI
- Self-hosted
Security & compliance
Known vulnerabilities: 1 (0 in the last 12 months), max severity MODERATE sourcea count reflects scale & disclosure, not quality
Locust alternatives
Other testing tools we track, ranked by the same independent score.
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Locust, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Release cadence | 94 | 0.07 | 6.3 | ✓ |
| Development activity | 49 | 0.12 | 5.9 | ✓ |
| Dependent projects | 55 | 0.08 | 4.4 | ✓ |
| Pricing transparency | 80 | 0.05 | 4.2 | ✓ |
| Price level | 100 | 0.04 | 4.0 | ✓ |
| Capabilities | 29 | 0.10 | 2.9 | ✓ |
| Stars | 84 | 0.03 | 2.8 | ✓ |
| Security score | 48 | 0.05 | 2.5 | ✓ |
| Reliability | 0 | 0.05 | 0.0 | - |
| Integrations | 0 | 0.05 | 0.0 | - |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 36 | mediumsource · 2026-08-26 · 65% |
Adoption
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Languages: Python · Parallel execution: Yes | mediumsource · 2026-08-16 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Python | highsource · 2026-08-26 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-08-26 · 95% |