Proxifier 3.15, 3.28, 3.29, 3.31

  https://www.proxifier.com/distr/ProxifierSetup.exe

  T3ZWQ-P2738-3FJWS-YE7HT-6NA3K (from: http://yah-killer.org/showthread.php?5234-Proxifier-latest-version-3.15-key )

for Mac 2.15:

  P427L-9Y552-5433E-8DSR3-58Z68
  
4.05:

    L6Z8A-XY2J4-BTZ3P-ZZ7DF-A2Q9C（Portable Edition）
    5EZ8G-C3WL5-B56YG-SCXM9-6QZAP（Standard Edition）
    P427L-9Y552-5433E-8DSR3-58Z68（MAC）