IPB is the second-best forum software I have ever seen (vBulletin is the number one, none of other softwares WILL best it). Even though it takes some time to customize the forum but once you have done, what you get is awesome.

phpBB is known for a lot of security issues (other free forum softwares are much more secure). Also, the mods for IPB are extremely good, they can integrate nicely with each others too while phpBB's can't.

IPB is your friend if you have enough money to afford it.

IPB is way better then PhpBB. It is easy to navigate in my opinion and takes more then just mysql inserts to hack. PhpBB has had it's main site hacked. IPB may not have as much stuff as PHPBB (as in mods) but it has what most people need. If modifications meen enough to you that you are willing to put your forum in harms way then you probably shouldn't be on the web. The way I see it is I would rather have a smooth running forum with few mods then a jam packed forum with every mod, but is easy to hack. You should probably compair IPB with vBulletin rather then the free PhpBB. They seem more like competiters then phpbb and IPB do because vBulletin and IPB both cost money. If you wanted to compair free you should compair PhpBB, Invision Free, IceBB and Simple Machines.
Thanks,
Sparkx

i like phpbb the best bc i used it on all my forums and i learned to <3 it lol

vmkrightpoint

Please use full english sentences here, "bc" is for lazy people and not for asta forummers, and I even cannot guess what "<3 lol" means.

i prefer phpbb..

it's free and secure!

and i can add a lot of skins..

IPB it's more dificult and you have to pay everything.. =/

IPB sounds good when it's registered.. but it's too expensive.. for me.