Sparrow
The lightest and fastest API testing platform
5.0•33 reviews•968 followers
The lightest and fastest API testing platform
5.0•33 reviews•968 followers
Sparrow is now lighter, faster, smarter, and AI-powered. From natural language API calls to self-hosting, it’s a complete package of modern API testing. Built for speed, clarity, and control—no clutter, just flow. Experience the new Sparrow.
Sparrow
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
@joshi_rahul congrats on the launch, my techie freinds are delighted with this tool....best wishes.
Sparrow
@shashwat_ghosh_gtm Thanks for the support!
@joshi_rahul Congrats - Sparrow looks clean! Been looking for something lighter than Postman. Does the
self-hosting option include AI features, or is that cloud only?
@joshi_rahul Amazing launch! Love how you've combined the power of enterprise-grade features with the simplicity developers actually want to use.
@joshi_rahul Congratulations master Joshi.
I wish you more developments.
Sparrow
Sparrow feels like the API tool we’ve all been waiting for — minimal, powerful, and built with real developer workflows in mind.
Sparrow
@ashutosh_jambhale We built Sparrow with exactly that vision: something lightweight yet powerful, crafted to fit naturally into real dev workflows.
What can Sparrow do that Postman cannot and why should I switch?
Sparrow
@kevincittadini
Sparrow doesn't eat your memory
Sparrow can run locally without signing in
Sparrow is open source
Sparrow has free AI agent to assist you with tasks
Sparrow comes with very powerful collaboration framework for teams to share APIs
Active sync to always have up to date collection automatically from local swagger, OpenAI specs
MDM and group policy support for enterprise
Test flows
Self hosting either via helm or one click deployment from azure or aws marketplace
This is just tip of the iceberg. It is engineered from the ground. To give best experience, we rethought each and every step of how developers use these tools and improved each aspect of it. 🙂
@kevincittadini @gauravc12 good