This site is a work in progress. Please bear with us.
Some developer resources for Flare / XRPL:
Open source from Ripple, inc:
https://github.com/ripple
https://github.com/ripple-unmaintained/
A very simple smart contract resource / tutorial for Coston, the Flare testnet.
https://github.com/flare-dev/coston
Information about working with Web3j library on Android/Java devices.
https://www.baeldung.com/web3j