Download Junkie:

[You'll actually find that my system is one of the cleanest that you'll ever see, unlike the newfangled P2P fans. <g> ]

These download speeds are achieved using the "Software Compression" option in normal 56k modems

The actual amount of data that travels trough the phone line stays below 56kb/s, but the effective bandwidth can be much more.

14KB/s on a 56k modem/connection:

21KB/s on a 56k modem/connection: