Pyodide
Python compiled to WebAssembly: run Python in the browser.
Languages, types and runtimes npm MPL-2.0
How Pyodide is used
Pyodide joined the catalog on its public numbers (535,832 downloads a week on npm and 14,899 GitHub stars), not on our project count: it is a dependency in 11 public GitHub projects of our scan, 1 of them set up for AI coding agents. Projects that use it most often also use LangChain.js (72.7%), Transformers.js (54.5%), jsdom (54.5%).
Pyodide popularity over time
Gid Score 50: downloads 58, use in agent projects 19, GitHub stars 57, downloads trend 75 (each 0-100). How it is calculated.
Often used with Pyodide
| LangChain.js | 72.7% of Pyodide projects · 122.0× more than average |
|---|---|
| Transformers.js | 54.5% of Pyodide projects · 135.4× more than average |
| jsdom | 54.5% of Pyodide projects · 5.6× more than average |
| dotenv | 54.5% of Pyodide projects · 3.5× more than average |
| AWS SDK for JavaScript (S3) | 45.5% of Pyodide projects · 14.4× more than average |
| Notion SDK | 45.5% of Pyodide projects · 148.5× more than average |
| Pinecone (JavaScript) | 45.5% of Pyodide projects · 403.1× more than average |
| Qdrant JS Client | 45.5% of Pyodide projects · 313.5× more than average |
How Pyodide is funded
Open Collective: Pyodide
| Received, last 12 months | $9,643 Oct 2025 – Sep 2026 |
|---|---|
| Estimated annual budget | $10,760 Open Collective's estimate |
| Balance | $22,322 |
| Raised since the start | $27,239 · $4,917 paid out |
| Typical month median, last 12 months | $398 · $401 over 24 months |
| Last 12 months vs the 12 before | +92% |
| Contributors, last 12 months | 6 |
Top company backers all time, 7 companies in total
| Posit | $3,300 since Jan 2024 |
|---|---|
| Suborbital Software Systems | $2,800 since Dec 2021 |
| Hugging Face | $2,800 since Jul 2022 |
| PyCafe | $750 since Jul 2024 |
| Eduwalks | $675 since Dec 2022 |
Nov 2021Sep 2026
Money by month. First money received in Nov 2021. The typical month is the median: one big one-off donation does not move it.
USD after payment processor fees, as Open Collective reports it; fiscal host Open Source Collective. Source
GitHub Sponsors
| @pyodide | 4 current sponsors |
|---|
GitHub shows how many people and companies sponsor an account, not how much they pay.
Ways to fund Pyodide
GitHub Sponsors Open Collective
As the maintainers list them in FUNDING.yml on GitHub. Checked Oct 20, 2026.
Install
| Package | npm install pyodide |
|---|---|
| Main stacks | TypeScript / JavaScript (8), Next.js (2), Python (1) |
| Example projects | northsh/detection.studio, InfamousVague/Libre.academy |
Alternatives to Pyodide
In our scan, none of the most used tools in Languages, types and runtimes does the same job as Pyodide: they are add-ons, companions or tools for a different task.
More in Languages, types and runtimes: TypeScript tsx ts-node jiti vue-tsc Cloudflare Workers Types mypy tsconfig-paths