First of all, thanks realityiswhere,
Source from : http://www.projectosx.com/forum/index.php?showtopic=102
WORK IN PROGRESS
중요하거나 많이 사용되는 Kext는 Red로 표시되어 있습니다. 시스템 문제를 야기시킬 수 있는 kexts (시스템에 문제를 야기시키거나 불필요한 kext는 언급을 하지 않거나)는 Orange.색깔로 표시되어 있습니다. Anything marked with Obsolete has nothing to do with Intel Macs or OSx86. Pseudo-Extensions only have an Info.plist and a version.plist, not a binary (binaries can be very, very loosely called "programs").
If you see another table on the right of a kext, that means these kexts are located *INSIDE* of the kext on the left. Access them by right clicking the kext in question, click "show package contents", under the Contents/PlugIns/ directory.
If anyone edits this and messes it up, I will be very sad
To be added: agpgart, EHCISleepEnabler