BuddyPress.org

I use P2 for user blogs and it works pretty good but then you feel like you want even more available to the user as far as an full editor with categories, custom fields, and other features like widgets, and switching themes….and that’s just not worth hacking up P2, so there’s also styling the backend so that it looks like your theme, for that check out wpengineer.com for some functions that’ll allow you to skin your wp admin. there may even be some plugins up to the task now, i haven’t checked. You could also get someone to develop some custom forms that could be placed on a page only viewable to the admin user. So there’s alot of creative ways to do it but ultimately…I think the push for frontend editing is getting bigger and bigger, and theme developers will begin including frontend features — if we show there is a demand.