Here a list whit the best applications for the AC100 on android 2.2.

Browsers:
Boat browser or/and Dolphin browser HD
** Firefox
**To download something on the internet, much download browser give sometime a download error. This is so, because they use the engine wrom android and that is just not so good.
The only one that I found. Whit his own download engine, is Firefox. This is the best application for downloading a file. But not for browsing.

Mediaplayer:
Moboplayer + arm7 codec app. This mediaplayer plays everything and has his own big software codecs. Its plays even MKV whit sub!! on software codec mode. But what more important. Its free! unlike rockplayer.

Office software:
OfficeSuite Pro or/and document to go (Full version unlocked)

File explorer:
**Es file explorer
**The stock file manager is great. But you want to see everything on you're ac100. I recommended: Es file explorer. This file browser is free and has great features. It can even unpack files, when astro file manager is doing nothing but giving a error.

Torrent downloader:
aDownloader

Security:
Lookout or AVG free.

Pic gallery:
QuickPic

MSN:
Epinephrine Pro

Task manager:
**Advanced task manager (Paid version)
**This task manager has great features. Also change the layout to the old version on the settings.

Homescreen launcher:
**VTL.Launcher.
**You want a other Homescreen. I recommended this one. Version 1.6.5 is available free on http://forum.xda-developers.com/showthread.php?t=1046302 The newest version is available on the market for 2 euro. Please beware that this Home launcher ask some tweaking in the options.


Root tools: (You want to root. See the rooting section)
Titanium backup pro
SD maid
LCDDensity (Change the dp)
Screen Shot It

Games:
Angry birds
Angry birds Seasons
Angry birds Rio
Bunny Shooter