via lifehacker
- Hamachi (VPN)
- DD-WRT (router firmware)
- WiPeer (P2P wireless)
- Synergy (virtual KVM)
- Net Profiles (network-specific settings)
- iStumbler (wireless network manager)
- NetMeter (bandwidth monitor)
- DynDNS (dynamic DNS)
- MacFUSE (network drive mounter)
- Angry IP Scanner (port scanner)
Other tools recomended :
- Net Tools
- Top 100 Network Security Tools
- www.dd-wrt.com
- HFS (Http File Server)
- Stunnel
- GigaTribe
- Free Network Utility Nuggets
- http://www.wireshark.org/
Tips :
If you use DYNDNS or No-IP and use DD-WRT, you don't need the update clients, you can configure them straight in your router.
http://www.dd-wrt.com/wiki/index.php/DDNS_-_How_to_setup_C...
shows you how to configure it.