# Meta — developer ecosystem report

> We are working to build community through open source technology. NB: members must have two-factor auth.

- GitHub org: `facebook`
- Category: platform
- Overall score: 57.0 / 100
- Overall rank: #115
- Last refreshed: 2026-08-19

## Pillar scores

| Pillar | Score / 100 | Rank | Weight in overall |
| --- | --- | --- | --- |
| Code & Polish | 75.0 | #53 | ~22% |
| Education | 65.0 | #472 | ~18% |
| AI readiness | 19.0 | #604 | part of Reach |
| Builder experience | 0.0 | #1 | ~12% |
| Community | 78.0 | #9 | ~16% |
| Reach | 92.0 | #6 | ~18% |
| Momentum | 54.0 | #174 | ~14% |

## Links

- GitHub: https://github.com/facebook
- Website: https://opensource.fb.com

## Public GitHub totals

| Metric | Value |
| --- | --- |
| Repos analyzed | 12 |
| Stars | 541,588 |
| Forks | 78,644 |
| Open issues | 13,222 |
| Contributors | — |

## Top repositories

| Repo | Stars | Language | Description |
| --- | --- | --- | --- |
| [docusaurus](https://github.com/facebook/docusaurus) | 66,000 | TypeScript | Easy to maintain open source documentation websites. |
| [rocksdb](https://github.com/facebook/rocksdb) | 31,984 | C++ | A library that provides an embeddable, persistent key-value store for fast storage. |
| [folly](https://github.com/facebook/folly) | 30,502 | C++ | An open-source C++ library developed and used at Facebook. |
| [zstd](https://github.com/facebook/zstd) | 27,580 | C | Zstandard - Fast real-time compression algorithm |
| [lexical](https://github.com/facebook/lexical) | 23,777 | TypeScript | Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance. |
| [flow](https://github.com/facebook/flow) | 22,276 | Rust | Adds static typing to JavaScript to improve developer productivity and code quality. |
| [prophet](https://github.com/facebook/prophet) | 20,366 | Python | Tool for producing high quality forecasts for time series data that has multiple seasonality with linear or non-linear g |
| [relay](https://github.com/facebook/relay) | 18,955 | Rust | Relay is a JavaScript framework for building data-driven React applications. |
| [hhvm](https://github.com/facebook/hhvm) | 18,654 | C++ | A virtual machine for executing programs written in Hack. |
| [fresco](https://github.com/facebook/fresco) | 17,159 | Kotlin | An Android library for managing images and the memory they use. |
| [infer](https://github.com/facebook/infer) | 15,679 | OCaml | A static analyzer for Java, C, C++, and Objective-C |
| [watchman](https://github.com/facebook/watchman) | 13,684 | C++ | Watches files and records, or triggers actions, when they change.  |

## 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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