您有多少次重复使用过去最重复使用的组件？ （你的）

If you designed a toolkit, an application or a framework, mention the most reusable component you used of them, how portable it is, how many times you reused it, how many programmers worked on it with you, and how much time did it take you to ship it. and also the names of the patterns you applied while developing it. (approximately of course).If you designed a toolkit, an application or a