IBC Go

Used by the majority of 200+ IBC-connected chains in production, as noted in the README, indicating battle-tested stability and wide adoption.

Supports middleware like callbacks for custom packet processing, allowing flexible application development beyond core IBC functionality.

Implements all IBC standards (ICS) including token transfers (ICS20) and interchain accounts (ICS27), providing a full-featured interoperability solution.

Multiple security audits by firms like Informal Systems and Trail of Bits, detailed in the README, ensure robustness and trustworthiness.