On the contrary, I use Proxomitron with Sygate and they work fine.

Outpost is pretty good as well, but I can't remember what is disabled in the free version.
This may help. [url=http://ttp://www.agnitum.com/migratepages/newpro_vs_oldfree.html]ttp://www.agnitum.com/migratepages/newpro_vs_oldfree.html[/url]

Good luck