Jest vs Testem

Jest9.2Visit TTestem8.1Visit

Higher score Jest #2 in JavaScript Testing Frameworks 9.2/10 Free plan Free plan✓ 2 of 4 features Visit Jest

vs

T Testem #6 in JavaScript Testing Frameworks 8.1/10 Open source ✓ 2 of 4 features Visit Testem

• Jest fits best

  Established JavaScript and TypeScript application teams

• Testem fits best

  Legacy-compatible browser and CI test workflows

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Side by side

Feature	Jest 9.2/10 Visit ↗	TTestem 8.1/10 Visit ↗
At a glance
Editor score	9.2	8.1
Ranking	#2 in JavaScript Testing Frameworks	#6 in JavaScript Testing Frameworks
Best for	Established JavaScript and TypeScript application teams	Legacy-compatible browser and CI test workflows
Pricing model	Free	Free
Starting price	Free plan	Open source
Free plan	✓ (best)	Not checked yet
Free trial	—	—
Deployment	Self-hosted	Self-hosted
Support	Community, Docs	Docs
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market
Features Jest 2/4 · Testem 2/4
Component testing	Not checked yet	Not checked yet
Coverage reporting	Not checked yet	✓ (best)
Snapshot testing	✓ (best)	Not checked yet
Parallel execution	✓	✓
Specs
Supported runtimes	Not checked yet	Node.js, Chrome, Firefox, Safari, Edge
Parallel workers	Not checked yet	Not checked yet
Our review
Pros	Combines assertions, mocks, snapshots, coverage, and test execution Supports parameterized and concurrent test execution Integrates with Babel, webpack, Parcel, React, Angular, and Vue	Runs tests in Chrome, Firefox, Safari, Edge, and Node.js Supports Jasmine, QUnit, Mocha, and custom adapters Includes watch mode, parallel execution, coverage, and CI reporters
Cons	Self-hosted distribution requires teams to manage their own environment TypeScript support runs through Babel or ts-jest Property-based testing is not a built-in feature	Less feature-rich as a standalone framework than broader alternatives Frameworks outside its built-in adapters require custom integration Parallel worker limits are configurable rather than fixed
Our verdict	Jest is an open-source JavaScript testing framework for teams building and maintaining JavaScript and TypeScript applications. It combines command-line test execution with matchers and assertions through the expect API, mock functions and… Read the review →	Testem is an open-source JavaScript test runner for teams that need to execute tests across real desktop browsers, headless Chrome, Node.js processes, or custom launchers. It supports macOS, Windows, and Linux, and works with Jasmine,… Read the review →

Strengths and trade-offs

• Jest — where it wins

  • Combines assertions, mocks, snapshots, coverage, and test execution
  • Supports parameterized and concurrent test execution
  • Integrates with Babel, webpack, Parcel, React, Angular, and Vue

  Where it doesn't

  • Self-hosted distribution requires teams to manage their own environment
  • TypeScript support runs through Babel or ts-jest
  • Property-based testing is not a built-in feature

• Testem — where it wins

  • Runs tests in Chrome, Firefox, Safari, Edge, and Node.js
  • Supports Jasmine, QUnit, Mocha, and custom adapters
  • Includes watch mode, parallel execution, coverage, and CI reporters

  Where it doesn't

  • Less feature-rich as a standalone framework than broader alternatives
  • Frameworks outside its built-in adapters require custom integration
  • Parallel worker limits are configurable rather than fixed

• Jest9.2/10 · Free plan

  A complete open-source toolkit for established JavaScript and TypeScript teams.

  Visit JestFull verdict →
• TTestem8.1/10 · Open source

  A flexible runner for real-browser, Node.js, and CI testing across common frameworks.

  Visit TestemFull verdict →