Proton Chain is an open source project, below are important Github repos to follow.

Join the Official Proton developer channel on Telegram.

Proton Protocol

The blockchain that interacts with fiat.

Proton Web

Proton Web SDK. Connect to the Proton Blockchain using Javascript.

Proton Kotlin

Kotlin library for handling Proton Chain operations. The main purpose of this library is for account and key management, but also handles signing and pushing transactions.

Proton Swift

Proton is a drop in library to handle all things ProtonChain. This includes but is not limited to accout management and storage, signing and pushing transctions, etc