# Application Developers

- [Building xApps](https://docs.nomad.xyz/developers/application-developers/building-xapps.md)
- [SDK](https://docs.nomad.xyz/developers/application-developers/sdk.md)
- [Contracts SDK](https://docs.nomad.xyz/developers/application-developers/sdk/contracts-sdk.md)
- [Typescript SDK](https://docs.nomad.xyz/developers/application-developers/sdk/typescript-sdk.md)
- [Examples](https://docs.nomad.xyz/developers/application-developers/examples.md)
- [Ping Pong](https://docs.nomad.xyz/developers/application-developers/examples/ping-pong.md)
- [Advanced](https://docs.nomad.xyz/developers/application-developers/advanced.md)
- [Router Pattern](https://docs.nomad.xyz/developers/application-developers/advanced/router-pattern.md)