Source: https://seerepo.com/r/unionlabs/union/built
Markdown source: https://seerepo.com/r/unionlabs/union/built.md
Description: union is a Rust repo built with SvelteKit, net/http, and axum. It stores its data in Postgres and Supabase.

# What is union built with?

union is a Rust repo built with SvelteKit, net/http, and axum. It stores its data in Postgres and Supabase. It has 1,844 files and 468,418 written lines, with 120 test files.

Read on October 27, 2026, at commit 031785b.

Repository: https://github.com/unionlabs/union

## Frontend

### The base

- **SvelteKit**: [in package.json](https://github.com/unionlabs/union/blob/031785bb6dc6b957c624e62bc64c184409c97d7b/package.json)

## Backend

### The base

- **[net/http](https://seerepo.com/uses/net-http)**: [in package.json](https://github.com/unionlabs/union/blob/031785bb6dc6b957c624e62bc64c184409c97d7b/package.json)
- **axum**: [in package.json](https://github.com/unionlabs/union/blob/031785bb6dc6b957c624e62bc64c184409c97d7b/package.json)

### Data

- **[Postgres](https://seerepo.com/uses/postgres)**: 9 files · [mpc/client/src/main.rs, line 30](https://github.com/unionlabs/union/blob/031785bb6dc6b957c624e62bc64c184409c97d7b/mpc/client/src/main.rs#L30)
- **Supabase**: 6 files · [app2/src/lib/dashboard/client.ts, line 3](https://github.com/unionlabs/union/blob/031785bb6dc6b957c624e62bc64c184409c97d7b/app2/src/lib/dashboard/client.ts#L3)

## Other repos with a similar stack

- [hoppscotch/hoppscotch](https://seerepo.com/r/hoppscotch/hoppscotch/built): net/http, axum, Postgres · [Compare](https://seerepo.com/compare/hoppscotch/hoppscotch/vs/unionlabs/union)
- [ruvnet/ruflo](https://seerepo.com/r/ruvnet/ruflo/built): SvelteKit, Postgres, Supabase · [Compare](https://seerepo.com/compare/ruvnet/ruflo/vs/unionlabs/union)
- [langgenius/dify](https://seerepo.com/r/langgenius/dify/built): net/http, Postgres
- [open-webui/open-webui](https://seerepo.com/r/open-webui/open-webui/built): SvelteKit, Postgres
- [yangshun/tech-interview-handbook](https://seerepo.com/r/yangshun/tech-interview-handbook/built): Postgres, Supabase
- [immich-app/immich](https://seerepo.com/r/immich-app/immich/built): SvelteKit, Postgres

## Frequently asked questions

### What language is union written in?

union is written in Rust: 1,844 files and 468,418 written lines.

### What framework does union use?

union is built with SvelteKit, net/http, and axum.

The proof: [in package.json](https://github.com/unionlabs/union/blob/031785bb6dc6b957c624e62bc64c184409c97d7b/package.json)

### What database does union use?

union stores its data in Postgres and Supabase.

The proof: [mpc/client/src/main.rs, line 30](https://github.com/unionlabs/union/blob/031785bb6dc6b957c624e62bc64c184409c97d7b/mpc/client/src/main.rs#L30)

### Does union have tests?

Yes. union has 120 test files.

### Which repos have a stack like union's?

The ones that share most of its stack: hoppscotch/hoppscotch, ruvnet/ruflo, and langgenius/dify.

## 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.