Beyond the End presents the following for free as a way of saying thank you to the mambo community:
BtE eNote: resembling a simplified version of the "contact us" component, this module's front end consists of only fields for a return email address and the contents of the note. In the backend the title of the email and the address to which it will be sent can be set. This is designed as a way for users to give quick feedback to the administrator. It can be used for bug reporting, suggestions, or anything else you'd like. Future versions will include some additional abilities to choose the purpose (and destination) of the email on the front end.
BtE Favs: this module allows each registered user to have their own favorite places list to which they can add and remove pages within your site. The list allows for rapid access to the features they use the most.
BtE Bouncer: compairs the viewer's ip to a list of banned ips (it can also be set up to work the opposite way with a list of allowed ips). Should there be a match, the viewer will be redirected to a page/site of your choosing and in addition a cookie will be left on their computer. Should someone with this cookie attempt to view your website after they have changed ips, they will still be banned and their new ip will be automatically added to the list. Since this is a module, it can be placed on specific pages if you only want certain ones secured.
is currently under construction (and being used as a testing ground) but soon you'll be able to find more details there.
all 3 should be out with beta versions within a week or so.
i guess that about wraps it up, let me know what you think!