[Asterisk-Users] SIP softphone with subscription/hint support?

[Philipp von Klitzing]

Hi there,

for testing purposes I am searching for a freely available softphone that 
supports SIP subscriptions and display the status of a few of these via 
e.g. a simulated LED. I know about

* EyeBeam (not free)
* SNOM softphone (needs Win XP and has old firmware)

Are there other softphones with this feature set around (that aren't 
fixed to one specific VoIP operator)?

Philipp