There are plenty of others out there,
SBIG is perhaps the most common and do have the edge on their dual chip design (imaging & guiding), but this doesn't always suit everyone. Many prefer guide scopes with separate guiders. No such thing as one model suits everyone these days. Many flavours and colors to choose from

:
Finger Lakes Instruments -
http://www.fli-cam.com/
Apogee -
http://www.ccd.com/
Theta Systems -
http://www.theta-system.com/sis.html
Fair Child Imaging -
http://www.fairchildimaging.com/prod...as/scientific/
Star Light Express -
http://www.starlight-xpress.co.uk/products.htm
Lumenera -
http://www.lumenera.com/astro/index.php - If you are serious about imaging the planets, you will not find a better imaging system on the market today. I think this is what
Damian Peach uses.
The list could go on... I've even forgotten about the good ol'
cookbook CCD camera (sadly now obsolete)...