Juump is a free online community that hooks up tennis players with other tennis players who live and play nearby. Just type in your Zip code and up pops a list of available partners (along with their preference for single or doubles, their skill level, and the reason they play–"cardio," "compete", "drill.") And yes, it's free.
Find out more at Juump.

Thanks for the post and for supporting Juump! Just wanted to provide an update about the new release of Juump.com back in May 2013. It’s still free and it’s still dedicated to finding tennis partners, BUT we’ve made it a lot easier to connect with active players nearby. Rather than messaging players directly, you now post a play request in your area. All the members nearby receive an email notification that you are interested in playing. You then accept who you want to play with from all the responses and it’s GAME ON! In busy cities we’ve seen play requests get confirmed within 10 minutes of signing up for the site!
Tennis is a great sport and we’re all doing this because we love it. I think we should all work together to promote tennis to as many people around the world! Send me a note at gabe.pavel(at)juump.com if you’re interested in collaborating.
Cheers!
Gabe Pavel | Co-founder at http://www.juump.com
Get connected. Play tennis.