Remote vanilla PDB (over TCP sockets) done right: no extras, proper handling around connection failures and CI. Based on pdbx.
To open a remote PDB on first available port:
from remote_pdb import set_strace set_strace() # you'll see the port number in the logs
To use some specific host/port:
from remote_pdb import RemotePdb
RemotePdb('127.0.0.1', 4444).set_trace()
To connect just run telnet 127.0.0.1 4444 ...
Python 2.6, 2.7, 3.2, 3.3 and PyPy are supported.