Data file used by the Network Connections utility in Microsoft Windows, which is also referred to as the Remote Access Phonebook; stores saved dial-up connection settings, which include phone numbers, logins, and passwords; can save data for multiple connections. PBK files can be edited with the appropriate software.
Pixel Bender kernel language is used to implement image processing algorithms (filters or effects) in a hardware-independent manner.
ARC is a lossless data compression and archival format by (SEA). It was very popular during the early days of networked BBS. The file format and the program were both called ARC. The ARC program essentially made obsolete the use of combinations of the SQ program to compress files and the LU program to create .LBR archives by combining the functions of both compression and archiving into a single program. ARC compresses multiple files into one - but unlike ZIP, not entire directory trees. The .arc format was the subject of quite a bit of controversy in the 1980s - an important event in the open source debate.
The PBK file extension is associated with the ElectraSoft Fax. File contains Phone book file used by ElectraSoft Fax applications.