This topic was inspired by phitsc's Android apps micro reviews 
So, Android users, what non-bundled apps do you use?
Below are some free ones I've found handy:
Updated: Added links to AppBrain pages.

So, Android users, what non-bundled apps do you use?
Below are some free ones I've found handy:
- Adv Calculator [AB] - simple calculator with history
- AndExplorer [AB]- simple file explorer
- APV (Android PDF Viewer) [AB] - for when VuDroid doesn't work
- Bluetooth File Transfer [AB] - as the name says
- Clipper [AB] - clipboard sniffing and manipulation - insurance for loss of long constructed text strings
- ES File Explorer [AB] - multi-feature file explorer (mainly used here for local and LAN (SMB), but also sometimes for backing up apps)
- FBReaderJ [AB] - ebook reader - only tested here with epub format
- iClock - clone of original iClock - used here mostly for World Clock functionality
- Measured Timer [AB] - simple minute-granularity timer - drag around a ring to set
- Moon+ Reader [AB] - ebook reader with highlighting - only tested here with epub and html formats
- MySettings [AB] - toggling and viewing settings - use it mostly to quickly check remaining battery percentage
- RockPlayer [AB] - media player that happens to handle most formats i've been using recently
- SAM - app to interface with SlideME
- VuDroid [AB] - djvu / pdf viewer
Updated: Added links to AppBrain pages.
















?!? ...That hardly seems wise... 
I wanted the HTC Desire HD, and that's all I could get. 