I am currently using Online Armor with Sandboxie and apart from one little issue they work well together. I read a lot of positive reviews about Defensewall and looked at this as an alternative to Sandboxie. However, I am a bit confused on how DW differs from Sandboxie and if it could work well with OA? I understand that OA already provides a facility to run programs with limited rights (safer) - so my first query is if this duplication between the HIPS part of the firewall and DW may cause problems. Secondly, I understand how sandboxie works (in practical terms only) but what would be advantages of DW over Sandboxie and vice versa? Third, to cause more confusion - would threatfire be a good addition or just be overkill?