FlexJobs.com (there is a monthly, 3-month, or yearly membership fee to access their job listings, but it is a legitimate site). They have lots of listings for work from home, remote jobs in all fields.
also check out:
thebalancecareers.com (I got a lead for a remote job in my field from this site, back when it used to be called about.com, so I highly recommend it!)
Ratracerebellion.com
workathomemomrevolution.com
realwaystoearnmoneyonline.com
and you can search glassdoor.com for remote jobs.