How MSW Storybook addon is used
MSW Storybook addon joined the catalog on its public numbers (1,607,702 downloads a week on npm and 497 GitHub stars), not on our project count: it is a dependency in 17 public GitHub projects of our scan, 14 of them set up for AI coding agents. Projects that use it most often also use Storybook (94.1%), Mock Service Worker (88.2%), Vite (88.2%).
MSW Storybook addon popularity over time
Gid Score 38: downloads 68, use in agent projects 25, GitHub stars 0, downloads trend 56 (each 0-100). How it is calculated.
Often used with MSW Storybook addon
| Storybook | 94.1% of MSW Storybook addon projects · 46.4× more than average |
|---|---|
| Mock Service Worker | 88.2% of MSW Storybook addon projects · 64.4× more than average |
| Vite | 88.2% of MSW Storybook addon projects · 4.5× more than average |
| Vitest | 88.2% of MSW Storybook addon projects · 4.3× more than average |
| Testing Library | 82.4% of MSW Storybook addon projects · 8.1× more than average |
| Prettier | 76.5% of MSW Storybook addon projects · 3.6× more than average |
| React | 94.1% of MSW Storybook addon projects · 2.9× more than average |
| Chromatic | 64.7% of MSW Storybook addon projects · 133.9× more than average |
By coding agent
| Claude Code | 0.4% of projects set up for it |
|---|---|
| Cursor | 0.3% of projects set up for it |
| GitHub Copilot | 0.2% of projects set up for it |
Share of public repos configured for each agent that list MSW Storybook addon as a dependency.
How MSW Storybook addon is funded
Open Collective: Mock Service Worker
| Received, last 12 months | $882 Oct 2025 – Sep 2026 |
|---|---|
| Estimated annual budget | $8,975 Open Collective's estimate |
| Balance | $7,576 |
| Raised since the start | $17,112 · $9,536 paid out |
| Typical month median, last 12 months | $68 · $72 over 24 months |
| Last 12 months vs the 12 before | -48% |
| Contributors, last 12 months | 6 |
Top company backers all time, 10 companies in total
| Chromatic | $2,000 since May 2022 |
|---|---|
| Toss | $1,300 since Mar 2023 |
| Shogun Labs, Inc. | $1,290 since Apr 2021 |
| Principal Financial Group | $630 since Feb 2025 |
| commercetools GmbH | $500 since Mar 2021 |
Oct 2021Sep 2026
Money by month, last five years. First money received in Mar 2021. The typical month is the median: one big one-off donation does not move it.
The same collective is named by 1 more tool in our catalog: Mock Service Worker.
USD after payment processor fees, as Open Collective reports it; fiscal host Open Source Collective. Source
GitHub Sponsors
| @mswjs | 27 current sponsors |
|---|
GitHub shows how many people and companies sponsor an account, not how much they pay.
Ways to fund MSW Storybook addon
GitHub Sponsors Open Collective
As the maintainers list them in FUNDING.yml on GitHub. Checked Oct 20, 2026.
Install
| Package | npm install msw-storybook-addon |
|---|---|
| Main stacks | TypeScript / JavaScript (14), Python (1), Go (1), Next.js (1) |
| Example projects | Asvarox/allkaraoke, storybookjs/mealdrop, bartstc/vite-ts-react-template, bitrise-io/bitrise-workflow-editor, JesusFilm/core |
Alternatives to MSW Storybook addon
In our scan, none of the most used tools in Testing does the same job as MSW Storybook addon: they are add-ons, companions or tools for a different task.
More in Testing: Vitest Playwright (JavaScript) Testing Library jsdom Jest pytest Happy DOM axe-core Playwright