We are the creators and maintainers of Waffle, a framework for testing smart contracts. - Multiple repositories in the Optimism ecosystem are dependent on Waffle. - Waffle provides a clean and simplified way to write tests for smart contracts. - It abstracts away much of the boilerplate code, making it easier to focus on the actual test logic and improving overall ecosystem security and reliability. - Waffle is one of the most popular testing libraries. It has helped many projects and developers keep their smart contracts secure and well-tested.