Compose and send HTTP requests (method, URL, headers, auth, body) and inspect the response — a lightweight Postman in your browser.
API Testing
Open tool
Free Online QA & Software Testing Tools
The QA half of Mutqan Tools covers the testing workflow end to end: designing test cases and scenarios with proven techniques, generating the data those tests need, sending and validating API requests, mocking the responses a front end is waiting for, and measuring how an endpoint performs.
The tools are built by a software testing company for its own testers, with the region in mind — Saudi addresses, Arabic and Hindi test data, and exports that drop straight into TestRail, Jira, JMeter or Postman. They are free and run in your browser.
Categories
Categories
API Testing Tools
REST, GraphQL, SOAP, WebSocket & Webhooks
22 tools →Test Data Generators
Fake Users, Addresses, IBANs & Datasets
31 tools →Test Design Tools
Test Cases, BVA, Decision Tables & Pairwise
19 tools →Response Validation Tools
Cookies, Cache, Security Headers & Contracts
6 tools →Mock Data & API Response Tools
Mock JSON, Responses, Errors & Pagination
10 tools →Performance Testing Tools
Response Times, Benchmarks & Load-Test Data
6 tools →Test Automation Helpers
OpenAPI Test Cases, JMeter Data & Scripts
4 tools →🔥
All QA & Testing tools →Popular tools in this area
One-stop factory for synthetic test data: users, customers, companies, addresses, numbers, dates and strings in JSON, CSV, SQL or XML.
Test Data New
Open tool
Get a unique URL, send webhooks to it and inspect method, headers, body and timing in real time.
API Testing
Open tool
Generate structured test cases (id, title, preconditions, steps, expected result, priority) from a feature description and field list.
Test Design
Open tool
Generate mock JSON from a template with placeholders ({{name}}, {{uuid}}, {{int:1-10}}, {{date}}, {{pick:a|b}}).
Mocking
Open tool
Test REST endpoints with full control over method, headers and JSON body, then assert on status, headers and JSON paths.
API Testing
Open tool
Generate fake user records (name, username, email, password, avatar seed, role) for test accounts.
Test Data
Open tool
Quickly check that an API endpoint is reachable: status, response time, size, content type and TLS.
API Testing
Open tool
Guides
More guides →Learn more
API Testing
What is API Testing? How to Test a REST API
API testing explained: what it is, what to check in every request and response, a step-by-step method for a REST API, common failures and free browser tools.
Test DesignHow to Write Test Cases
How to write test cases developers trust: the fields every case needs, a copy-ready template, a login example, and the design techniques that find real bugs.
PerformanceWhat is Performance Testing?
Performance testing explained: load vs stress vs spike vs soak tests, the metrics that matter (p95, throughput, error rate), planning a first test, and tools.