These are LiveCD's that are created with Thinstation. They are not really meant for production use, but you could possibly use some of them in that way. These are more of a demonstration of what you could achieve with the Thinstation build system and a pretty minimal amount of effort.

Multi-Client, All modules UP, XFCE - Might need 600mb or RAM

VMware Horizon View Client - Optimized to be run in a virtual machine. 23mb, 256mb RAM

Freerdp - Optimized to be run in a virtual machine, 58mb, 256mb RAM

RDesktop/IceWM -  Includes IceWM and all known ethernet modules. No Acceleration, but should boot everywhere at 1024x768 in 128mb of RAM

RDesktop -  Has all known ethernet modules. No Acceleration, but should boot everywhere at 1024x768 in 128mb of RAM

Chrome for a VM. These images are all made from the same underlying file system, but I have used various methods to compress and make available the files when running. This image is optimized for a virtual machine.

Memory Mode / RW Method / Compressor / Tweaks	Ram Requirement	Size	Time to Boot
Initramfs//gzip	544	89276416	12.43s
Initrd/Aufs/Squashfs	256	90300416	12.56s
Initrd/Aufs/Squashfs xz	256	75808768	16.31s
Initramfs/Fastboot/Squashfs	256	89788416	12.12s
Initramfs/Fastboot/Squashfs/Memory Constrained	188	89788416	11.89s
Initramfs/Fastboot/Squashfs/Lots of Memory	480	89991168	12.95s