Alternative to the Regcode module? I'd really like to use the Regcode module, but it is not very well maintained and with the progression of depending modules like VBO it becomes rather unstable imho.

So, i'd be glad if anyone can point me in the right direction to solve these problems:


Restrict user registration to "somehow invited" (preferably code-based) people only.
Manage the invites in backend.


I'd also like to know if there's maybe a commercial module that fit my needs...
I think you'll need to do some custom magic voodoo ;)

I built a similar site earlier this year:   The client provided a list of users (with their email addresses) in an Excel spreadsheet.  I created a new column with a unique 8 character registration code for each user.  I then imported that file, including the code, as new users.

The registration code was saved as a plain-text field in their user profile.  

Create a custom user login form that only requires the registration code,  mail out the reg codes.