Hoppscotch wins on weight and self-hosting; PolyApiIDE wins on SOAP, QA runs and load profiles.
Hoppscotch is a pleasant open source client: web, PWA and desktop, instant to start, speaking REST, GraphQL, WebSocket, SSE, Socket.IO and MQTT, and deployable on your own server. For quick requests in a minimal interface it does the job.
Two gaps show up once the work gets heavier: SOAP with WSDL import is not in the protocol list, and there is no QA scenario or load tooling. PolyApiIDE covers exactly that, at the cost of a proprietary license.
| Topic | PolyApiIDE | Hoppscotch |
|---|---|---|
| Where it runs | Browser extension for Chrome / Edge / Chromium and Firefox, MV3 | Web, PWA and desktop, with self-hosting available |
| License | Proprietary extension | Open source, can be deployed on your own infrastructure |
| Protocols | REST, GraphQL, WebSocket, SOAP, SSE, gRPC via JSON transcoding | REST, GraphQL, WebSocket, SSE, Socket.IO, MQTT |
| SOAP and WSDL | SOAP requests and WSDL import out of the box | SOAP is not in the stated protocol list |
| Socket.IO and MQTT | Not supported | Supported |
| Imports | OpenAPI JSON and YAML, WSDL, GraphQL SDL and introspection, .proto, AsyncAPI, Postman, curl, Insomnia, Thunder Client and Hoppscotch collections — all on the free tier | Its own collections and common exchange formats |
| Variables | Request → collection → space → environment, empty values are never applied, and both {{var}} and {var} work | Environments and variables |
| QA, scenarios, load | Checks on requests, scenarios, Functional runner, load profiles, PDF reports (paid tiers) | Focused on being a light request client |
| Where data lives | Locally in the browser; the cloud only on your command | In the browser, or on your server when self-hosted |
| Interface language | English and Russian | English in practice: hoppscotch.io/ru serves English content |
| Licensing model | Free, monthly, yearly and a one-time Lifetime license | Open source, self-hosting is free |
Hoppscotch details verified on 2026-10-20. Hoppscotch collections import into PolyApiIDE on the free tier, so trying it out costs nothing but a few minutes.
In Hoppscotch export the collections to a file, and export environments separately if you use them.
In the collections panel choose import and the Hoppscotch format. This is available on the free tier.
Spread variables across the levels: environment for stages, space for shared values, collection for local ones. The result is visible in "Applied variables".
If part of your integrations are SOAP, import the WSDL and the requests appear immediately. Then attach QA checks and scenarios to whatever breaks most often.
No. It is a browser extension rather than a server application, and it is not open source. Data still stays local in the browser, so no server is needed to work.
Not supported. We cover REST, GraphQL, WebSocket, SOAP, SSE and gRPC via JSON transcoding. If MQTT is a daily tool for you, Hoppscotch is more convenient.
Sending requests, collections, environments and the whole import set, Hoppscotch collections included. Scenarios, the Functional runner, load profiles and PDF reports are on paid tiers.
Not for the free tier or for sending requests. A 24-hour demo key arrives by email if you want to try the paid features.
As of 2026-10-20 there is effectively no Russian localization: hoppscotch.io/ru serves English content. PolyApiIDE ships both English and Russian.