If you mean running your own node, then there are multiple flavors of API:
https://github.com/ton-foundation/ton-api-v4
If you mean something like Ganache for TON, then there's the TON contract executor:
At the moment I am using public nodes which are quite slow. We want to speed up the TON network that we're working on - do you have any instructions on how to launch lightserver maybe?
This question was imported from Telegram Chat: https://t.me/tondev_eng/9803
If you mean running your own node, then there are multiple flavors of API:
https://github.com/ton-foundation/ton-api-v4
If you mean something like Ganache for TON, then there's the TON contract executor: