The best replacement for ids is ips.

The best alternatives to ids are rated as following:
★★★★★  ips
★★★★  firewall
★★  classes
★  idp
★  id's
★  siem
★  network based ids
★  waf
★  classes html
★  vgs nmos
  ips cisco
  nids
  ips)
  network ids
  snort
  antivirus
  drx
  anti virus
  firewalls

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

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



Google Trends

Scale is based on the average worldwide traffic of ids in all years. Click on graph for more.
ids
ips
firewall