Android: Many calls and texts require further action at a later date, and CallFlakes makes it much easier to remember these follow-ups.
Once the app is installed, you'll see a toolbar every time you complete a call or receive a text message. From this bar, you can automatically initiate follow-up actions like sending an email to the caller, scheduling a meeting, or setting a reminder. If you're like me and frequently forget these kinds of things after hanging up on a call, the app could be incredibly useful.
CallFlakes also integrates with Facebook, and will augment your Caller ID with the caller's profile photo and recent wall posts. This particular feature isn't quite as fleshed out as Current Caller ID's similar offering, but it's a nice toss-in for an otherwise extremely useful app.
CallFlakes is free on Google Play.