Jewish American Singles is an online dating community exclusively for Jewish American Singles. Only a few of my matches had been on the site in the last month. So I would recommend signing up for a free profile and doing a search for who’s active in your area, before upgrading to a paid membership.
The site does offer some nice features such as chat rooms, instant messaging as well as a matching feature. There is no mobile version of the site but they do have an iPhone app. The site could use a bit of a redesign as it looks a bit outdated.
JewishAmericanSingles.com is a good bare bones site but if you live in a smaller city then you may not find a lot of local matches near you. Since registration and browsing through profiles is free then you having nothing to lose seeing who is in your area.