[nonhuman]

I'm working on a project that requires a decently sophisticated user management system. I'd rather not have to write my own as I'm sure someone else has already done a better job than I'm likely to do. But I haven't really been able to find anything. Does anyone have any recommendations of APIs that I could use or at least somewhere to look? (And don't just say sourceforge, it's a huge pain in the ass to find anything there if you don't already know what you're looking for.)

[besson3c]

What do you mean by user management system? What does this need to do? CRM? SImple database?

[nonhuman]

It's basically an informational database that users will buy a membership to. So it need some system for storing information about users, authenticating, and keeping track of when their membership will expire. I'm not averse to having to add some of the needed features to it, but the more feature-complete the better.

[besson3c]

I don't know of any existing tools that will do that, in part because the configuration of such a system, the authentication, and all the details would be very particular to your setup. Looking at authentication schemes alone, there are many different approaches, and many are specific to various environments.

It would actually be quite easy for you to write your own system that will do this though... I'm sure this is what most people who need to do what you want to do have done.

[himself]

There are a good number of options at OpenSourceCMS.