Echo
Here at Gapfy, we spend our days building APIs, so we know what a good API client should feel like and how rarely one delivers it. Echo is our answer. It is quick, it is clear, and it treats testing as work that deserves real tools, not a cluttered tab you put off opening.
Microsoft StoreBuilt for the work, not for the demo
Echo is a desktop client for testing HTTP and gRPC APIs. It opens fast, it stays out of your way, and every request you send comes back readable, with the status, the timing, and the body laid out so you understand it at a glance. Organize your requests into collections, keep your environments tidy, and stop hunting for the call you made last week.
- Test HTTP and gRPC APIs from a fast, native desktop client.
- Read every response at a glance: status, timing and body, laid out clearly.
- Organise requests into collections and keep environments tidy.
- Find the call you made last week without hunting through tabs.
See the difference, side by side
The feature we are proudest of is the one we needed the most. Point a single request at two environments, your staging and your production for example, run them together, and Echo shows you both answers next to each other with every difference highlighted. The moment something behaves differently between environments, you see it plainly, instead of guessing.
- Point one request at two environments and run them together.
- See both responses side by side with every difference highlighted.
- Catch a config drift between staging and production the moment it happens.
Serious where it matters
Echo carries the things teams genuinely need and usually have to pay dearly for: shared workspaces, real access control, single sign on, and an audit trail you can stand behind. It signs in with your Gapfy account and sits comfortably beside the rest of the family. Enterprise care, without the enterprise theatre, because solid tools should never be a luxury.
- Shared workspaces and real access control for your team.
- Single sign-on and an audit trail you can stand behind.
- Signs in with your Gapfy account, beside the rest of the family.
Free, Pro and Pro AI
Free is generous for everyday testing. Pro lifts the limits and adds team controls; Pro AI adds the assistant that writes tests and explains failures for you.
Test your APIs the way they deserve
Echo is ready to download today. Bring clarity to your API work and let every request come back loud and clear.
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