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Clobbr
Clobbr is a simple yet powerful app and CLI tool for testing API endpoint speed and performance. Find bottlenecks, test concurrency, and ship confidently—no subscriptions required.
About Clobbr
Load Testing Without the Complexity
Clobbr is a lightweight yet powerful API testing tool that helps developers uncover performance issues and optimize endpoints with ease. Whether you're working on REST, GraphQL, or serverless APIs, Clobbr makes it simple to run tests, visualize results, and ship better software faster.
Built for Developers, Not Data Centers
Clobbr focuses on usability and privacy. It’s available as a standalone app and CLI tool, with no accounts, no subscriptions, and no data ever stored on a server. Everything runs locally—putting you in complete control.
Core Features of Clobbr
Fast and Flexible Request Configuration
Set up requests in seconds. Choose from HTTP verbs (GET, POST, PUT, etc.), add payloads with syntax-highlighted JSON, and customize headers using plain text or dynamic scripts. Configure request iterations, concurrency, and timeouts—all through a clean, intuitive interface.
Visualize Performance Instantly
Clobbr offers clear, interactive charts that help you understand your API’s behavior under load. View key stats like percentiles, standard deviation, and historical trends. Toggle between line and bar charts or enable trendlines for deeper insights.
Designed for Teams and Solo Developers
Share Results Securely
Easily share results with your team while keeping sensitive data private. Reports can be exported or shared with one click, and Clobbr automatically strips out confidential info if desired.
Debug Faster With Detailed History
Explore detailed request and response histories to troubleshoot failed tests. You can copy payloads and view individual runs in table or chart views for precision debugging.
Developer-Friendly at Every Step
CLI and CI/CD Ready
Clobbr works just as well in your terminal as it does on your desktop. The CLI version supports the same configurations and can export to CSV, JSON, or YAML. Integrate it into your CI/CD pipeline to ensure endpoints meet performance benchmarks before deployment.
Intelligent Scripting and Autocomplete
When customizing headers or payloads, Clobbr offers autocomplete and linting similar to modern code editors. You can also test scripts directly within the UI to iterate quickly and avoid errors.
Privacy First, Always
No Accounts. No Cloud. Just Local.
Clobbr stores all data locally on your device. There’s no signup process, and none of your request or result data ever touches a remote server. It’s privacy by design for developers who care.
One-Time Purchase, No Subscription
Clobbr offers a fair pricing model—just one payment to own the app on macOS or Windows. No recurring fees, no hidden costs, and optional free access via Setapp or open-source alternatives.