API testing
REST, GraphQL, WebSocket, MQTT clients in one tool

// screenshot of hoppscotch.io ↗
Hoppscotch is an API development ecosystem — REST, GraphQL, WebSocket, Server-Sent Events, MQTT client; collections, environments, history, real-time team collaboration. Browser-first PWA with self-hosted server for team sync.
Hoppscotch is an API development ecosystem — REST, GraphQL, WebSocket, Server-Sent Events, MQTT client; collections, environments, history, real-time team collaboration. Browser-first PWA with self-hosted server for team sync.
The OSS alternative to Postman with a focus on speed, simplicity, and no forced cloud account.
Concrete scenarios where teams pick Hoppscotch over the SaaS alternative.
REST, GraphQL, WebSocket, MQTT clients in one tool
shared collections + environments across team
generate docs from collections
new devs explore APIs without local setup
websocket / MQTT inspection during dev
If your team profile matches one of these, Hoppscotch is a strong fit out of the box.
preferring browser-based over Postman desktop app
sharing API collections with frontend / mobile
showcasing APIs to external developers
rejecting Postman's mandatory cloud account
wanting Postman features without per-seat billing
When evaluating self-hosted options for this category, here are the dimensions on which Hoppscotch consistently lands above the alternatives.
The stack you'll plug Hoppscotch into — services, protocols, and adjacent apps in the BluixApps catalog.
hoppscotch/hoppscotch:latest (release-tagged)Operational guidance from running this in production — what to do before you scale, what to lock down, what surprises people.
postgres:17-alpine · hoppscotch/hoppscotch:2026.4.1