k6
Open-source load testing tool for engineering teams.
⭐ 4.5/5Free Tier AvailableOpen SourceFounded 2017
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About k6
k6 (by Grafana Labs) is a developer-centric, free and open-source load testing tool. Tests are written in JavaScript, making it approachable for developers. It supports HTTP, WebSocket, gRPC, and browser-based testing.
k6 Interface Preview
Pricing at a Glance
| Free Tier | Lowest Paid | Enterprise |
|---|---|---|
| Fully open source | Free | Grafana Cloud k6 (paid) |
Key Features
✓Load Testing
✓JavaScript Scripts
✓Browser Testing
✓gRPC Support
✓Thresholds
✓Grafana Integration
Use Cases
- • Testing + DevOps workflow optimization
- • k6 onboarding for new teams
- • Reducing manual tasks with k6 automations
Popular Integrations
SlackGoogle WorkspaceZapierHubSpotSalesforceNotion
Pros & Cons
👍 Pros
- ✓Developer-friendly JS scripting
- ✓Open source
- ✓Low resource usage
- ✓Grafana integration
👎 Cons
- ✗No GUI test recorder
- ✗Limited browser testing
- ✗Cloud features cost extra
User Reviews & Testimonials
“We switched in under a week and cut software spend materially while keeping the same workflow quality.”
“The comparison + pricing context made this an easy decision. Great shortlist quality.”
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