Ask HN: Mobile developers - how do you find new mobile app services?

In the past we've used everything from Mixpanel & Flurry for analytics, Hockeyapp and Testflight for beta testing, Crittercism for crash testing etc. But we stumbled on all these or heard about them via word of mouth. Do you know of any directories of mobile app services? Somewhere that different mobile development tools are reviewed/rated? How do you currently find tools to solve your problems when building/testing/deploying apps?