Source: https://seerepo.com/r/backstage/backstage
Markdown source: https://seerepo.com/r/backstage/backstage.md
Description: backstage/backstage is a TypeScript repo with 1,025,837 lines written. AI signed 3.3% of the 54,800 commits of backstage.

# What's inside backstage/backstage

backstage/backstage is a TypeScript repo with 1,025,837 lines written. backstage is built with Next.js, React, and Express and uses Postgres, GitHub, Google Cloud, and 4 more. AI signed 3.3% of the 54,800 commits of backstage.

Its description on GitHub: “Backstage is an open framework for building developer portals”

TypeScript · Apache-2.0 · 34,793 stars · GitHub: https://github.com/backstage/backstage

Read on November 7, 2026, at commit 7552a56.

## More on this repo

- [What is backstage built with?](https://seerepo.com/r/backstage/backstage/built): backstage is built with Next.js, React, and Express and uses Postgres, GitHub, Google Cloud, and 4 more.
- [How much of backstage did AI write?](https://seerepo.com/r/backstage/backstage/ai): AI signed 3.3% of the 54,800 commits of backstage.

## In figures

- 1,025,837 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 4,868 product files: The product’s own files. Test files are counted apart.
- 2,159 test files: The files that test the code.
- 10 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 backstage/backstage?

backstage/backstage is a TypeScript repo with 1,025,837 lines written. Its description on GitHub: “Backstage is an open framework for building developer portals”

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

### What is backstage built with?

backstage is built with Next.js, React, and Express and uses Postgres, GitHub, Google Cloud, and 4 more.

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

### How much of backstage did AI write?

AI signed 3.3% of the 54,800 commits of backstage.

The proof: [the commits each tool signed](https://seerepo.com/r/backstage/backstage/ai)

### What license does backstage have?

backstage is released under the Apache-2.0 license.

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

### How many stars does backstage have on GitHub?

backstage had 34,793 stars on GitHub on November 7, 2026.

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

## Add this badge to your README

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

```markdown
[![backstage/backstage on SeeRepo](https://seerepo.com/badge/backstage/backstage.svg)](https://seerepo.com/r/backstage/backstage?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.