Wine.

Useful info.

http://wiki.winehq.org/FAQ

Official FAQ.

Clearing workspace.

Make workspace backup:

$ wineboot -k
$ mv ~/.wine ~/.wine-tmp

Create new workspace:

$ winecfg

Move old programs (may not always work):

$ mv ~/.wine-tmp/opt ~/.wine/opt

Installing into separate workspace.

$ PROFILE=my-program
$ export WINEPREFIX=~/.wine-$PROFILE
$ winetricks dotnet20 dotnet40
$ wine /path/to/installer.exe
$ wine $WINEPREFIX/Program\ Files/Program/start.exe

Write simple script to run program in your environment:

#!/bin/sh
env WINEPREFIX=~/.wine-my ~/.wine-my/

To make 32-bit environment:

$ WINEARCH=win32 WINEPREFIX=~/.wine-32 winecfg

winetricks.

List of available packages:

$ winetricks apps list

Instal .Net 2.0/4.0:

$ winetricks dotnet20 dotnet40

Wine utils.

$ winecfg

$ wine control
$ wine regedit
$ wine uninstaller
$ wine notepad

$ winefile