I'm looking for a deployment of the multisig contract somewhere on the block chain. Is there any tools that lets me search through deployed contracts?
You can check better call dev for exploring contracts if you know the address
Here is the multisig used for the Babylon invoicing: https://better-call.dev/main/KT1DUfaMfTRZZkvZAYQT5b3byXnvqoAykc43/script
The smart contract depo contains a subfolder
onchain for all onchain contracts as of february 2020. Normally, it will be updated regularly.