The best replacement for fail2ban is denyhosts.

The best alternatives to fail2ban are rated as following:
★★★★★  denyhosts
★★★  sshguard
★★  ossec
★★  snort
★★  csf
★★  lfd
★  psad
★  apf
★  bfd

Your alternative for fail2ban is not listed? Suggest!
Speaking about fail2ban, one probably shouldn't forget about csf.

Other search terms related to fail2ban and their ratings are:
★★★★★ csf
★★★ apf
You have in mind a companion for fail2ban and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of fail2ban in all years. Click on graph for more.
fail2ban
denyhosts
sshguard