Pixmantec Raw Essentials 2005 supports most if not all Canon cameras.
Heres a list of all supported digital cameras:
Canon EOS-1Ds
Canon EOS-1D
Canon EOS-1D Mark II
Canon EOS-1Ds Mark II
Canon EOS 20D
Canon EOS 10D
Canon EOS D60
Canon EOS D30
Canon EOS DIGITAL REBEL
Canon EOS 300D DIGITAL
Canon EOS KISS DIGITAL
Canon EOS Rebel XT
Canon EOS 350D
Canon EOS Kiss Digital N
Canon PowerShot G2
Canon PowerShot G3
Canon PowerShot G5
Canon PowerShot G6
Canon PowerShot S30
Canon PowerShot S40
Canon PowerShot S45
Canon PowerShot S50
Canon PowerShot S60
Canon PowerShot S70
Canon PowerShot Pro1
NIKON D70
NIKON D100
NIKON D2H
NIKON D1H
NIKON E8400
NIKON E8700
NIKON E8800
NIKON D2X (preliminary support)
NIKON D2HS (Preliminary support)
Olympus E-1
Olympus E-10
Olympus E-20
Olympus E-300
Olympus C5050Z
Olympus C8080WZ
Olympus C5060WZ
Minolta DiMAGE 5
Minolta DiMAGE 7
Minolta DiMAGE 7i
Minolta DiMAGE 7Hi
Minolta DiMAGE A1
Minolta DiMAGE A2
Minolta MAXXUM 7D
Minolta ALPHA-7D
Minolta DYNAX 7D
Minolta Dimage A200
PENTAX *ist D
PENTAX *ist DS
Leica DIGILUX 2
Panasonic DMC-LC1
Epson R-D1
I use RSE as my sole RAW converter, nothing else is as good or as easy to use.
Its also FREE.