.xml - XML document
.000 - Linux, FreeBSD file
.ctt - Windows Live Messenger Contact List
.metadata_never_index - MAC OS X metadata settings file
.pst - Microsoft Office Outlook personal folder file
.part - Mozilla Firefox partial download file
.uccapilog - Windows Live Messenger file
.mso - Microsoft Orgchart file
file extension ALC - Alchemy chemical modeller input file
File extension ALC description:
File extension is used by alchemy specialised applications.
