WIFI Remote Access 7 for WP7 now available for developer unlocked devices (or devices unlocked with chevron wp7)... unfortunately it is very, very limited :( (no remote control, no text messaging, and no direct filesystem access because of sandbox...
Version 0.9.0 beta (2010/12/19)
This version of WIFI Remote Access 7 will expire on 2010/12/24.
WIFI Remote Access 7 is the Windows Phone 7 version of WIFI Remote Access,...
Here is a free application I've developed for Windows Mobile 6.x.
It's basically a web server (and FTP server) that runs on your device so that you can browse its content...