Sparrow : The lightest and fastest API testing platform
Introducing Sparrow: Built for the Future of API Development
In 2025, speed, clarity, and developer autonomy aren’t optional—they’re essential. That’s why Sparrow has evolved, blending input from developers in 25+ countries with our relentless pursuit of a better, faster, smarter API experience.
Here’s what’s new (and blazing fast):
Security and Compliance:
✅ Self Hosting – Deploy Sparrow securely on-prem or in your private cloud; Also available in Azure and AWS Marketplaces
✅ Sparrow Edge – Try it out instantly. No login, no friction
✅ MDM Support – Want more control in enterprise? You can control Sparrow with Group Policies!
New Features:
✅ Active Sync – Real-time Swagger/localhost collection syncing
✅ Postman Collection Import – Bring your existing workflow with you
✅ Public Workspaces – Collaborate and share instantly
✅ Sparrow Marketplace – Discover plug-and-play public APIs
✅ Mock Servers – Instant testing environments, no setup needed
✅ Expanded Protocol Support – GraphQL, WebSockets, Socket.IO & more
AI & Sparrow:
✅ LLM Debugging, Test Flows & Expressions – Build and troubleshoot as you go
✅ Sparrow AI Bot – Write API calls in plain English; powered by LLM of your choice, DeepSeek, Claude or OpenAI;
✅ AI Co-pilot & LLM Bot Management – Custom agents for seamless flow
✅ Auto-generate cURL, Docs, and Mock Data – No manual effort required
All in under 40MB, launching in around 1 second or less.
Whether you’re shipping solo or scaling with teams across the globe, Sparrow delivers the power with the simplicity of a modern UI.
Now listed on AWS and Azure Marketplaces—ready when you are.
Experience API testing the way it should be.
— Team Sparrow | Try Now at https://sparrowapp.dev
Star Us on GitHub – https://github.com/sparrowapp-dev/sparrow-app
