TxMan is an open-source library written in Kotlin that aims to simplify transaction management when using the popular Java database query library jOOQ. It acts as a transaction management layer on top of jOOQ, providing a seamless way to handle transactions across multiple files or methods. TxMan's goal is to reduce boilerplate code and ensure data integrity by eliminating the need for manual transaction boundary management. By leveraging Kotlin coroutines and maintaining transactional contexts, TxMan simplifies the handling of transactions across multiple files or methods, reducing code duplication and ensuring data consistency.