Alternatives to Storybook

Free Screen & Device Tests Online | Private Browser Diagnostics

Open-source icon library, a community-led fork of Feather, with 1,500+ consistent icons and bindings for every major framework.

Free, MIT-licensed SVG icon set crafted by the Tailwind Labs team, with outline, solid, mini, and micro variants.

Programmable CI/CD pipelines as code in Go, Python, TypeScript, or Java. Runs locally and on any CI provider.

Microsofts open-source end-to-end browser testing framework for Chromium, Firefox, and WebKit with one API.

Rapidly build custom designs without leaving your HTML

Visual regression testing and review platform built by the Storybook team, with cloud-rendered snapshots and PR integration.

Git-friendly, fully offline API client that stores collections as plain text files in your repository.

Hybrid CI/CD where the control plane is hosted but the build agents run on your own infrastructure.

API client and collaboration platform that started as a Chrome extension and now covers design, testing, and mocking.

Hosted continuous integration that runs your test suite in parallel containers across Linux, macOS, Windows, and ARM.

Open-source API client for REST, GraphQL, gRPC, and WebSockets. Postmans more polished, less corporate cousin.

Java testing framework that brings Spring Boot conventions and Playwright APIs to Selenium

Automatically investigate failing Playwright tests and open pull requests with fixes

WebSocket testing tools, protocol guides, and a Chrome extension for developers

Trace, grade and share proof that your AI agent actually works

Test and monitor conversational and data agents with adversarial scenarios and scored results

Build evals and custom benchmarks for real-world agent tasks

Independently test agent-written code and find failures before a pull request ships

Turn an API specification into runnable duplicate-action replay tests