Android developer portal with tools, libraries, and apps

Ghost Log is an Android application that displays the device logcat buffer in a system overlay window.

CatLog is a free and open-source log reader for Android.

It shows a scrolling (tailed) view of the Android "Logcat" system log, hence the goofy name. It also allows you to record logs in real time, send logs via email, and filter using a variety of criteria.