If you have an EasyFlash3 connected to a PC (or Linux or Mac) via USB cable then you can now enjoy the following:
EF3 BBS : Connect to numerous C64 BBS's and enjoy nice PETSCII graphics, modem speeds and newest releases using your real C64 and EF3 cartridge. You can also connect to normal telnet servers if you want. Downloading and Upload to/from PC is possible using XModem protocol.
EF3 IRC : Now you can ruin your eyesight by sitting at your c64 with the flickery CRT all the time chatting on #c-64 channel. 80 Columns support, colours and most commands working... is there anything better (yes, probably mostly everything else. Ed.)
Download at your usual place:
http://csdb.dk/release/?id=159907
http://csdb.dk/release/?id=159910