gca downloads
ArcConvert
0.65a download... Z / BZ2 / YZ1 / YZ2 / GCA / BEL / RPM / DEB/ BH / Noa32 / HKI / PAQAR / SQX /HA /ZOO /UHARC /LFB / ZLIB ...
IZArc
4.5 download... BZ2, BZA, C2D, CAB, CDI, CPIO, DEB, ENC, GCA, GZ, GZA, HA, IMG, ISO, JAR, LHA, LIB, LZH, MDF, MBF, MIM, NRG, PAK, PDI, PK3, RAR, RPM, TAR, TAZ, TBZ, ...
TUGZip
3.5.0.0 download... 7-ZIP, A, ACE, ARJ, BZ2, CAB, CPIO, DEB, GCA, GZ, IMP, LHA (LZH), LIB, RAR, RPM, SQX, ... ACE, ARC, ARJ, BH, BZ2, CAB, CPIO, DEB, GCA, GZ, IMP, JAR, LHA (LZH), LIB, RAR, RPM, ...