eLux RL and Scout complete package.
The Scout software is a set of programs which can (among others) 

Recover terminals (reflash from scratch)
Define software packages ( ica , rdp , firefox ,nx  etc)
Select software package options (charset, dual screen, 802.1X)
Distribute applications setup
Distribute hardware setup
Schedule distributions
Puma
Wake on lan etc.
This means you can define exactly the applications that has to be downloaded to the terminal. To save updates you may decide only to have the baseos , no drive support , no sound and the RDP application in only 75MB set up. This will limit the data that has to be sent to the terminal on software updates.

The configuration of application can be inherited from a tree structure facilitating an advanced configuration scheme. Very advanced hardware setup, with the possibility of setting properties that can be change by user , but not by a general setup. (E.g. imagine you have a standard setup with a screen resolution of 1280*1024, you have 1000 terminals , and out of these you have 160 wide screens at 1680*1050, 20 terminal at 800*600 etc, you do not want these to be reset when sending out a new timeserver setup?)