# References & SDKs

## Reference Implementation

* Alby: <https://github.com/getAlby/hub>
* Coinos: <https://github.com/coinos/coinos-server>

## SDKs

* [Javascript](https://github.com/getAlby/js-sdk?tab=readme-ov-file#nostr-wallet-connect-documentation)
* [Rust](https://github.com/rust-nostr/nostr)
* [Dart](https://pub.dev/packages/nwc)
* [Flutter](https://pub.dev/packages/ndk)
* [Python](https://github.com/supertestnet/python_nwc)

## NWC Relays&#x20;

[Alby NWC Relay](https://guides.getalby.com/developer-guide/nostr-wallet-connect-api/building-nwc-wallet-services/alby-nwc-relay) with a simple HTTP API open to wallets and lightning nodes ([get in contact](mailto:hello@getalby.com))