At OS4Depot.net you can download things for your AmigaOS 4.1 compatible machine like the AmigaONE X5000 when it comes out. Now you can pre order though! Here I found a Top 20 list from the site. This includes a webkit browser, AmiCraft which is a Minecraft clone and Emulators.
Here is the Top 20 list from OS4Depot site
1. Odyssey – Port of Odyssey from morphos
2. Apache – Apache 1.3.34 PHP 5.1.1 – AmigaOS4 binaries
3. Vgmstream – Converts A LOT of modern videogame music to wav
4. E-UAE – E-UAE with EasyUAE GUI
5. Aiss – Amiga Image Storage System
6. Minigl – OpenGL subset 3D API
7. smTube – Qt : direct stream + download YouTube videos
8. Png_im – PNG icon loader/saver module for AmigaOS 4
9. Gngeong – GnGeoNG is a fast and powerful Neo Geo emulator
10. Visualboyadvance – GB/GBC/GBA Emulator
11. AmiCraft – A Minecraft like game.
12. Scummvm – 2D Point-and-Click adventure interpreter
13. LoView – The Easy Viewer & Thumber :)
14. Sid2wav – Convert SID tunes to WAV
15. Wookiechat – IRC Client (Internet Relay Chat)
16. ADRipper – Audio CD grabber and encoder
17. Amicygnix-base – An Unix/X11 environment for AmigaOS 4
18. LiveForIt-mplayer – Mplayer optimized for Radeon HD
19. Mplayer-GUI – GUI for MPlayer for OS4
20. Pftp – Advanced FTP/SFTP client
Now I want to run this!?
Remember that you need AmigaOS 4.1 Final Edition for most of these files. You can download them for free, but do also remember that these people have made lots of effort during their spare time to give you quality software. You also need a PowerPC machine that supports AmigaOS 4.1 Final Edition. These are machines sold by Acube or A-EON. At the moment AmigaOS 4.1 Final Edition cannot run on PowerPC Macs.