A remote-control tool that can be used without firewall configuration. Port scanner and Trace Route, drag&drop files, get system passwords, Power-down or Wake-Up remote PCs.
By far the most impressive piece of software I've ever used. It's tiny and does the impossible. But it made enemies.
A remote desktop thing.
I didn't really take notes on rdesktop itself, though I had significant exposure through some of my projects with it. See /tag/rdesktop. Apparently I didn't note an rdesktop version.
possibly coming later
xpra is similar to rdesktop, except it lets you run single application windows instead of a whole desktop environment. It also lets you "detach" from the session, so the applications you run will stay running on the Raspberry Pi when you turn off your other computer.
This would be idea, but I cannot get this working properly. At some point I had the Raspbian repository xpra working, but now I can't even get that version to exist. It says it installs, but it doesn't exist on the Raspberry Pi or my desktop.