Apps similar to Treblle include Grafana, which is open source with a free version. Other options are Postman, Insomnia REST Client, Yaak and Hoppscotch. There's no shortage of API Clients like Treblle, with more than 50 alternatives for Mac, Linux, Windows, the web and self-hosting.
Bearer is a developer tool that helps engineering teams monitor API requests, track performance, detect anomalies, and fix issues for their critical API usage. The solution monitors all outgoing API requests without proxying traffic.
France
EU
API Test Base is a free, offline-first tool for testing APIs and their side effects — the records an API writes to a database, the messages it publishes to a queue, the downstream services it calls. Test cases are created with a no-code / low-code UI, and the same tests can be...
RequesterX is a free desktop HTTP client for API testing and development. Organize requests into nested collections, use environment variables for easy context switching, generate code snippets in 13 languages, and keep everything stored locally — no account required.
South Korea
Routebase keeps your API's design, docs, mock servers, contract tests and monitoring in one living OpenAPI spec so they can't drift apart.
Virtual-appliance log platform for on-network deployment, ingesting OTLP, syslog, and Fluentd data. It pairs natural-language log search and alert root-cause analysis with an LLM endpoint you control, while retaining search, dashboards, alerting, and incident tracking.
India
Gotcha HTTP Client is a lightweight http client that allows you to make requests and inspect responses.
Send HTTP requests to API endpoints. GetIt's main focus is to make your life a lot easier when you have to test APIs or use somebody else's API.
Resonance is a local-first, zero-account API client application designed to provide an excellent user experience for testing and interacting with APIs. Built with Tauri, it offers a modern and intuitive interface for developers.
Free browser-based OpenAPI editor from Postman. Design or import a Swagger 2.0, OpenAPI 3.0, or OpenAPI 3.1 spec (YAML or JSON) and see live documentation with inline validation as you type. No signup, no install. Part of Postman's suite of free developer tools at postman.
United States
Use Test API for restful api testing. This postman alternative test rest api online and use post request online to test API endpoint.
United States
