您选择框架或库的标准是什么？

In general, how do you choose a framework or library to use in your application? Does it have to be open source? Does it have to be commercial? Does it have to be actively developed, well-documented, or have a pretty home page? If your language has native support for some functionality, what would make you choose a third-party framework or library?In general, how do you choose a framework or li