The best replacement for pptp is l2tp.

The best alternatives to pptp are rated as following:
★★★★★  l2tp
★★★★★  openvpn
★★★★★  ipsec
★★  pppoe
★★  ssl
★★  sstp
★  openvpn speed
★  vpn
★  l2tp ipsec
★  l2pt
★  ipsec faster
★  lt2p
★  ssl vpn
★  l2tp more secure
  ppp
  dhcp
  open vpn
  ikev2
  ppoa
  ipsec vpn
  openvpn dd-wrt
  l2tp faster
  l2tp difference
  hamachi
  l2tp vpn
  l2tp over ipsec
  l2tp\/ipsec
  openvpn synology

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

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



Google Trends

Scale is based on the average worldwide traffic of pptp in all years. Click on graph for more.
pptp
l2tp
openvpn