Hi Jeff,

I suggest giving Contextly a go (founder here!). We do more than just related (though our related is pretty awesome) -- we include trending, evergreen and personalization. We also do lots of behind the scenes A/B testing, can handle video and podcasts, and give folks editorial tools as well -- and, of course, do all that on our own servers.

We're used by folks like MAKE Magazine, Fusion.net, PBS, KQED, Contently, Cool Tools and PEHub.

Free up to 10K PVs and free month trial.

RS