1. Which software in particular?
2. To do what, specifically? I mean, a program may link to more than one library to implement all of its functionality.
For example, just looking in Adobe Reader 10.0's binary directory, I can easily see they use ICU and SQLite. The former almost certainly for text conversion. The latter is less obvious, but I can see that in AppData\Local there's a file called "SharedDataEvents" that's obviously an SQLite database.
PS: By the way, thanks for wasting my time by double posting. Much appreciated.