Source: https://seerepo.com/r/codesandbox/codesandbox-client
Markdown source: https://seerepo.com/r/codesandbox/codesandbox-client.md
Description: codesandbox/codesandbox-client is a JavaScript repo with 1,045,244 lines written.

# What's inside codesandbox/codesandbox-client

codesandbox/codesandbox-client is a JavaScript repo with 1,045,244 lines written. codesandbox-client is built with React, react-router-dom, phoenix, and Preact and uses Sentry and Dropbox.

Its description on GitHub: “An online IDE for rapid web development”

JavaScript · 13,660 stars · GitHub: https://github.com/codesandbox/codesandbox-client

Read on November 9, 2026, at commit dcba8eb.

## More on this repo

- [What is codesandbox-client built with?](https://seerepo.com/r/codesandbox/codesandbox-client/built): codesandbox-client is built with React, react-router-dom, phoenix, and Preact and uses Sentry and Dropbox.
- [How much of codesandbox-client did AI write?](https://seerepo.com/r/codesandbox/codesandbox-client/ai): No AI tool signed any of the 6,354 commits of codesandbox-client.

## In figures

- 1,045,244 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 1,448 source files: The same as the lines: product, tests, schemas and tooling. What’s generated doesn’t count.
- 305 test files: The files that test the code.
- 34 technologies: Each service with the file and line that prove it.

SeeRepo read the facts in its code and kept none of it. AI only helps sort its packages and folders by their names, and never sees its code.

## Frequently asked questions

### What is codesandbox/codesandbox-client?

codesandbox/codesandbox-client is a JavaScript repo with 1,045,244 lines written. Its description on GitHub: “An online IDE for rapid web development”

The proof: [its page on GitHub](https://github.com/codesandbox/codesandbox-client)

### What is codesandbox-client built with?

codesandbox-client is built with React, react-router-dom, phoenix, and Preact and uses Sentry and Dropbox.

The proof: [each service with its file and line](https://seerepo.com/r/codesandbox/codesandbox-client/built)

### How many stars does codesandbox-client have on GitHub?

codesandbox-client had 13,660 stars on GitHub on November 9, 2026.

The proof: [its page on GitHub](https://github.com/codesandbox/codesandbox-client)

## Add this badge to your README

It links to this page and updates itself each time SeeRepo reads the repo.

```markdown
[![codesandbox/codesandbox-client on SeeRepo](https://seerepo.com/badge/codesandbox/codesandbox-client.svg)](https://seerepo.com/r/codesandbox/codesandbox-client?de=insignia)
```

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.