Clobbr

Clobbr is a developer tool that lets you test the speed and performance of your API endpoints. You can configure it to make multiple requests—sequential or parallel—to REST, GraphQL, or cloud function endpoints. It handles different HTTP verbs like GET, POST, and PUT, and allows you to set custom headers, timeouts, and JSON payloads. All your test data and results are stored locally on your machine, so no account is required and your information stays private.

The tool provides detailed statistics on your API's performance, including standard deviation and percentile data. You can visualize results with charts that offer trendlines and toggle between bar and line views. A built-in JSON editor with autocomplete helps you craft requests, and you can use scripts to generate dynamic headers. Clobbr also lets you share results with your team, and it automatically strips sensitive information for security.

This tool is ideal for developers and DevOps engineers who need to identify performance bottlenecks before deployment. It's useful for testing new endpoints, checking the impact of code changes, or integrating load testing into a CI/CD pipeline. The CLI version supports the same features and can export results to CSV, JSON, or YAML for further analysis.