The best replacement for netbios is dns.

The best alternatives to netbios are rated as following:
★★★★★  dns
★★★  netbeui
★★★  wins
★★★  fqdn
★★  smb
★★  wsd
★  tcp/ip
★  dns name
★  cifs
★  wmi

Your alternative for netbios is not listed? Suggest!
Speaking about netbios, one probably shouldn't forget about samba.

Other search terms related to netbios and their ratings are:
★★★★★ samba
You have in mind a companion for netbios and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of netbios in all years. Click on graph for more.
netbios
dns
netbeui