Kegetys' ArmA Tools and ArmA launcher
Launcher supports mods, joining to multiplayer servers,
querying servers, hosting a game, and it shows your
current ip address.
There is much more, read all its features and download it here
- Extracts and creates PBO files.
- "Decodes" raP encoded files, such as config.bin and rvmat files.
- Experimental PAA format plugin for Adobe Photoshop.
- SQS/SQF syntax highlighting for UltraEdit.
For more information and to download it check this