Used in agent projects
31
0.2% of 12,697 public repos built with AI coding agents
Rank in testing
#24 of 40
by use in those projects
Downloads
8.3M
npm, last 7 days, chromatic
GitHub stars
339
last push Oct 8, 2026
How Chromatic is used
Chromatic is a dependency in 31 of the 12,697 public GitHub projects set up for AI coding agents that we scanned (0.2%), #24 of 40 in testing. The most used alternative there is Vitest. Projects that use it most often also use Storybook (83.9%), Vitest (71.0%), Testing Library (67.7%).
Often used with Chromatic
| Storybook | 83.9% of Chromatic projects · 74.0× more than average |
|---|---|
| Vitest | 71.0% of Chromatic projects · 5.8× more than average |
| Testing Library | 67.7% of Chromatic projects · 9.4× more than average |
| Prettier | 67.7% of Chromatic projects · 3.9× more than average |
| Vite | 77.4% of Chromatic projects · 3.4× more than average |
| Playwright (JavaScript) | 61.3% of Chromatic projects · 7.0× more than average |
| jsdom | 54.8% of Chromatic projects · 10.2× more than average |
| Chromatic for Storybook | 51.6% of Chromatic projects · 123.6× more than average |
By coding agent
| Claude Code | 0.9% of projects set up for it |
|---|---|
| Cursor | 0.7% of projects set up for it |
| GitHub Copilot | 0.3% of projects set up for it |
| OpenAI Codex | 1.3% of projects set up for it |
Share of public repos configured for each agent that list Chromatic as a dependency.
Install
| Package | npm install chromatic |
|---|---|
| Main stacks | TypeScript / JavaScript (27), Next.js (4) |
| Example projects | storybookjs/mealdrop, Khan/wonder-blocks, leboncoin/spark-web, commercetools/merchant-center-application-kit, tangle-network/dapp |
Alternatives to Chromatic
| Tool | Used in agent projects | Downloads / wk | GitHub stars | License |
|---|---|---|---|---|
| Vitest npm Next-generation testing framework powered by Vite with native ESM. |
1,549 (12.2%) | 123M | 17.2K | MIT |
| Playwright (JavaScript) npm Cross-browser automation library for end-to-end testing. |
1,117 (8.8%) | 74.2M | 97.4K | Apache-2.0 |
| Testing Library npm Testing utilities for React encouraging testing user behavior. |
915 (7.2%) | 68.7M | 19.7K | MIT |
| Jest npm Delightful JavaScript testing framework with minimal configuration. |
702 (5.5%) | 46.3M | 45.6K | MIT |
| jsdom npm JavaScript implementation of web standards for testing DOM interactions. |
681 (5.4%) | 112M | 21.7K | MIT |
| pytest pypi Simple, powerful Python testing framework with fixtures and plugins. |
330 (2.6%) | 196M | 14.6K | — |
| Chai npm BDD/TDD assertion library for Node.js and browsers with expressive syntax. |
305 (2.4%) | 14M | 8,265 | MIT |
| Mocha npm Feature-rich JavaScript test framework for Node.js and browsers. |
281 (2.2%) | 12.6M | 22.9K | MIT |