> For the complete documentation index, see [llms.txt](https://docs.ont.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ont.io/guides-and-tutorials/development-guides/dapp-dev.md).

# dApp Development

- [Using the dAPI](https://docs.ont.io/guides-and-tutorials/development-guides/dapp-dev/using-dapi.md): Smart Contract and dApp development using Ontology's dAPI
- [Data Synchronization](https://docs.ont.io/guides-and-tutorials/development-guides/dapp-dev/data-sync.md): Synchronizing your local database with the data on the chain