Libre Developer Tools
Libre chain has lots of dev resources and a supportive community of developers on Discord.
https://www.libre.org/ecosystem has some open-source and mobile applications that show the power of integrating or building on Libre. To add your app, please join discord and let us know how you are using Libre.
Most Libre validators run open-access API endpoints separately from their validator nodes. There are several types of nodes that provide different services - producer, full-history, hyperion, v1, v2, p2p. Check out Libre Chain Nodes for in depth technical info on running your own nodes.
Mainnet endpoint monitor:
Libre has a fully functional API for interacting with the chain and chain history. Create accounts, submit transactions, get balances, deploy smart contracts.
There is a very simple tool for setting up a local chain dev environment located here on Github.
Want to integrate Libre into your existing wallet? You can use the open-source Libre-Link and Libre-Link-Browser npm packages for authentication and execution of signing requests.