Awardwallet is very convenient and easy to use. It covers airline, hotel, and similar programs. (It allows for multiple persons to have their accounts listed together - which is convenient for those who manage miles, points, and accounts for others, for example for a spouse, parents, children.)

Over the past couple years AA, Delta, and UA have stopped allowing mile-tracking and updating access to their sites via awardwallet. U.S. airlines Alaska, Hawaiian, and US Airways (among others), however, still work as do most non-U.S. airlines (such as BA, ANA).