Compose and send HTTP requests (method, URL, headers, auth, body) and inspect the response — a lightweight Postman in your browser.
API Testing
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
23 toolsTest Data Generators
Fake Users, Addresses, IBANs & Datasets
31 toolsTest Design Tools
Test Cases, BVA, Decision Tables & Pairwise
23 toolsResponse Validation Tools
Cookies, Cache, Security Headers & Contracts
8 toolsMock Data & API Response Tools
Mock JSON, Responses, Errors & Pagination
10 toolsPerformance Testing Tools
Response Times, Benchmarks & Load-Test Data
6 toolsTest Automation Helpers
OpenAPI Test Cases, JMeter Data & Scripts
4 toolsBy usage
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
Get a unique URL, send webhooks to it and inspect method, headers, body and timing in real time.
API Testing
Generate structured test cases (id, title, preconditions, steps, expected result, priority) from a feature description and field list.
Test Design
Generate mock JSON from a template with placeholders ({{name}}, {{uuid}}, {{int:1-10}}, {{date}}, {{pick:a|b}}).
Mocking
Generate a test plan from a template: pick website, mobile app, API, agile sprint or release, fill in what you know and get a complete Markdown plan to edit.
Test Design New
Plan future-date and time-zone tests: for an expiry, deadline, renewal, age or schedule rule, get the clock moments to test and the expected result at each.
Test Design New
Test REST endpoints with full control over method, headers and JSON body, then assert on status, headers and JSON paths.
API Testing
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.
API TestingAPI Testing Approaches Compared
Five ways to test an API — exploratory, scripted, contract, mocking and load — compared on what each catches, and how REST, GraphQL, SOAP and webhooks differ.
Test DesignEnd-to-End Product Quality Assurance
What end-to-end QA covers — requirements review, test design, functional, API, performance and security testing, release gates and metrics — and how to run it.
Test DataLocalization Testing
Localization testing explained: i18n vs l10n, translation quality, plurals, pseudo-localization, Hijri dates, digits, currencies, Unicode and automation.
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.
Test DesignManual vs Automated Testing
Manual and automated testing compared on cost, speed, what each finds and misses, and maintenance — with a practical rule for deciding what to automate.
Test DesignIn-House QA Team vs Outsourced QA
In-house, outsourced, augmented and hybrid QA compared on cost, ramp-up, product knowledge, control, data protection and knowledge retention, with a checklist.
Test DesignSDLC and STLC Explained
How the software development lifecycle and the testing lifecycle fit together: QA in every phase, an SDLC-to-STLC map, shift-left and testing per model.
Test DesignStatic Testing
Static testing explained: static vs dynamic testing, reviews and inspections, static analysis tools and their limits, and how to find defects early.
Test DesignTest Strategy: A Practical Guide
What a test strategy is, how it differs from a test plan, what it contains, the main test approaches, how to choose them, and an example outline.
Test DesignExploratory Testing
Exploratory testing explained: how it differs from scripted testing and how to run it with charters, heuristics, oracles, tours and good notes.
Test DesignAccessibility Testing
Accessibility testing with WCAG 2.2: POUR, levels A/AA/AAA, WCAG-EM, manual vs automated checks, sprint and CI practice, and typical defects.
Test DesignMobile Testing: A Practical Guide
How to test mobile apps: app types, device fragmentation, a device matrix, interruptions, networks, permissions, security, accessibility and automation.
AutomationUI Test Automation
UI test automation in practice: framework layers, Selenium, Playwright and Cypress, locators, waits, assertions, page objects, test data, CI and strategy.
AutomationCI/CD Testing
How testing works inside CI/CD pipelines: test stages, fast-feedback ordering, quality gates, JUnit reports, sharding, flaky tests and failure triage.
Test DesignSmoke vs Sanity vs Regression Testing
Smoke, sanity and regression testing compared: scope, timing, depth and automation, why "sanity" is ambiguous, and how to select regression tests.
Test DesignLLM Testing: How to Test LLM Applications
How to test LLM applications: non-determinism, prompt and output evaluation, security, RAG, regression on model changes, metrics and AI risk frameworks.
PerformancePerformance & Security Resilience Testing
How to test a product under load, failure and attack: load, stress and soak tests with real targets, failure injection, the OWASP baseline and what to record.
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.