# Contribute Code to the XRP Ledger

The software that powers the XRP Ledger is open-source, so anyone can download, modify, extend, or explore it. Some repositories you may want to consider include the following:

| Repository                      | Language       | Description               |
|:--------------------------------|:---------------|:--------------------------|
| [rippled][]                     | C++            | The core XRP Ledger server. |
| [ripple-lib][]                  | TypeScript     | JavaScript client library. |
| [ripple-address-codec][]        | TypeScript     | XRP Ledger address encoding/decoding library. |
| [ripple-binary-codec][]         | TypeScript     | XRP Ledger binary data encoding/decoding library. |
| [ripple-keypairs][]             | TypeScript     | XRP Ledger elliptic curve cryptography library. |
| [rippled-historical-database][] | JavaScript     | Data API server and XRPCharts backend. |
| [standards-drafts][]            | N/A            | Standards and specifications for XRP Ledger software. |
| [Xpring4j][]                    | Java           | Java SDK for XRP Ledger, Interledger, and PayID. |
| [XpringKit][]                   | Swift          | Swift SDK for XRP Ledger, Interledger, and PayID. |
| [Xpring-JS][]                   | TypeScript     | JavaScript SDK for XRP Ledger, Interledger, and PayID.
| [XRP-API][]                     | TypeScript     | REST API to the XRP Ledger. |
| [xrpl-dev-portal][]             | HTML, Markdown | This website.             |
| [XUMM-App][]                    | TypeScript     | Client application and developer platform for XRP Ledger. (Not freely licensed for all purposes.) |

[rippled]: https://github.com/ripple/rippled
[ripple-lib]: https://github.com/ripple/ripple-lib
[ripple-address-codec]: https://github.com/ripple/ripple-address-codec
[ripple-binary-codec]: https://github.com/ripple/ripple-binary-codec
[ripple-keypairs]: https://github.com/ripple/ripple-keypairs
[rippled-historical-database]: https://github.com/ripple/rippled-historical-database
[standards-drafts]: https://github.com/xrp-community/standards-drafts
[Xpring4j]: https://github.com/xpring-eng/xpring4j
[XpringKit]: https://github.com/xpring-eng/xpringkit
[Xpring-JS]: https://github.com/xpring-eng/xpring-js
[XRP-API]: https://github.com/xpring-eng/xrp-api
[xrpl-dev-portal]: https://github.com/ripple/xrpl-dev-portal
[XUMM-App]: https://github.com/XRPL-Labs/XUMM-App

Be sure to look at each repository's license and contributing guidelines before contributing to that repository.