Fatdog64 Linux is a small yet versatile 64-bit multi-user Linux distribution. Originally created as a "fatter" (=more built-in applications) derivative of Puppy Linux, Fatdog has grown to become an independent, mature 64-bit Linux distribution while still keeping true to Puppy Linux spirit: small, fast and efficient.

At around ~450MB, Fatdog boots up to a complete desktop environment ready for use. Most applications needed for everyday use are already included.
- Seamonkey browser (Gecko-based like Firefox)
- Universal HTML email client (Seamonkey Mail)
- Versatile media player (VLC)
- Bit torrent client (Transmission)
- Word processing (Libreoffice Writer)
- Spreadsheet (Libreoffice Calc)
- PDF/PS/Djvu reader (Evince)
- PDF annotation (Xournal)
- Graphics editor (GIMP)
- Video editor (Avidemux)
- Scanning system (Xsane)
- Printing system (CUPS)
- CD/DVD/Bluray burner (PBurn)
- Remote connection clients (RDP, VNC, SSH)
- File sharing servers (Samba, FTP, HTTP)
- Text editor - IDE (Geany)
- HTML editor (Seamonkey Composer)