# SumUp Open Source — developer ecosystem report

> We not only do payments, we are also really excited about Open Source.

- GitHub org: `sumup-oss`
- Category: dev_tool
- Overall score: 47.0 / 100
- Overall rank: #291
- Last refreshed: 2026-08-22

## Pillar scores

| Pillar | Score / 100 | Rank | Weight in overall |
| --- | --- | --- | --- |
| Code & Polish | 78.0 | #31 | ~22% |
| Education | 76.0 | #217 | ~18% |
| AI readiness | 52.0 | #153 | part of Reach |
| Builder experience | 0.0 | #1 | ~12% |
| Community | 45.0 | #251 | ~16% |
| Reach | 0.0 | #1077 | ~18% |
| Momentum | 18.0 | #662 | ~14% |

## Links

- GitHub: https://github.com/sumup-oss
- Website: https://opensource.sumup.com

## Public GitHub totals

| Metric | Value |
| --- | --- |
| Repos analyzed | 12 |
| Stars | 1,534 |
| Forks | 202 |
| Open issues | 85 |
| Contributors | — |

## Top repositories

| Repo | Stars | Language | Description |
| --- | --- | --- | --- |
| [circuit-ui](https://github.com/sumup-oss/circuit-ui) | 975 | TypeScript | SumUp's design system for the web |
| [foundry](https://github.com/sumup-oss/foundry) | 193 | TypeScript | A toolkit for building web applications and libraries. |
| [gocat](https://github.com/sumup-oss/gocat) | 167 | Go | 21st century, multi-purpose relay from source to destination |
| [performance-observer](https://github.com/sumup-oss/performance-observer) | 62 | TypeScript | Generic interface for PerformanceObserver API. |
| [terraform-provider-vaulted](https://github.com/sumup-oss/terraform-provider-vaulted) | 40 | Go | Encrypted HashiCorp Vault secrets via Terraform that can be stored in SCM such as Git |
| [vaulted](https://github.com/sumup-oss/vaulted) | 37 | Go | Multi purpose cryptography tool for encryption/decryption using AES256 GCM |
| [collector](https://github.com/sumup-oss/collector) | 20 | TypeScript | DEPRECATED! A library of React components and hooks for contextual user-interaction tracking for complex interfaces with |
| [intl-js](https://github.com/sumup-oss/intl-js) | 11 | TypeScript | Format numbers, currency values, dates, and times for any locale with the ECMAScript Internationalization API |
| [signal](https://github.com/sumup-oss/signal) | 11 | TypeScript | Collect and send page performance metrics with ease |
| [go-pkgs](https://github.com/sumup-oss/go-pkgs) | 11 | Go | Generic and easy to use packages for common functionality. |
| [janos](https://github.com/sumup-oss/janos) | 3 | JavaScript | Janos K8s migration |
| [terraform-provider-vaulted-tfe](https://github.com/sumup-oss/terraform-provider-vaulted-tfe) | 2 | Go | Encrypted Terraform Cloud/Enterprise variables with Terraform that can be stored in an SCM such as Git. |

## Methodology

Scores are computed from public signals only (GitHub, package registries, docs sites, community platforms). Pillar definitions: https://www.smoower.com/docs.md

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