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No. 13 of 23 ·JavaScript Testing Frameworks

Testem

Windows · Mac · Linux

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Freedom report

Two barsScore 5.5

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedPlans, terms and facts published

Testem is ranked #13 of 23 in JavaScript testing frameworks on Freedom251. It runs on Windows, macOS, Linux.

Compared on JavaScript testing frameworks

Coverage reporting: Yes
Supported runtimes: Node.js, Chrome, Firefox, Safari, Edge
Parallel execution: Yes

Best Testem alternatives

Two bars Karma Free tier No. 1Free6.8 Two bars QUnit Free tier No. 2Free6.8 Two bars Web Test Runner Free tier No. 3Free6.7 Two bars Cucumber.js Free tier No. 4Free6.6 Two bars Vitest Free tier No. 5Free6.6 One bar Mocha Free tier No. 6Free6.4

The record

Purpose: Testem is a JavaScript test runner for running tests in real desktop browsers, Node, or a configured launcher.
Frameworks: It supports Jasmine, QUnit, Mocha, and custom test framework adapters.
Workflows: It supports test-driven development and continuous integration workflows.
Browser testing: It can launch real browsers, including Chrome, Firefox, Safari, and Edge, and provides a Headless Chrome launcher.
Platforms: The README lists macOS, Windows, and Linux as supported platforms.
CI integrations: The README describes use with GitHub Actions and other CI systems, including Jenkins and TeamCity.
Reporters: Built-in CI reporters include TAP, dot, xunit, and TeamCity, and custom reporters can be added.
Preprocessors: The README lists Babel, TypeScript, Browserify, ESLint, JSHint, JSLint, and CoffeeScript support.
Programmatic API: Testem exposes an API class with startDev, startCI, and startServer modes.

Where it ranks on Freedom251

Best JavaScript Testing Frameworks in 2026#13 of 23

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Sources

github.com/testem/testem· checked 4 Oct 2026