Current versions:

Cairo 	        1.12.8
ICU             4.6.1 (With Apple's 10.7.4 updates)
libxml2        	2.8.0
libxslt         1.1.26
libjpeg         7.0
libpng          1.5.10
objc4           493.11
OpenCFLite      635.21
OpenSSL         1.0.1c
Pixman          0.28.0
SQLite          3.7.7.1
zlib            1.2.7