Minimally maintained

Since there are far too many modules implementing partial functionality of this module, and the slow uptake (~30 users or 0.005% of Drupal sites), I have decided to declare the end of the road for rolekeys.

Here are some alternatives

To assign a role on registration try

Core actions can easily handle this
http://drupal.org/project/autoassignrole
http://drupal.org/project/registration_role

To allow a user to choose a role on registration
http://drupal.org/project/user_selectable_roles

To provide a role using a key during registration
http://drupal.org/project/regcode

Memberships (not covered by rolekeys!)
http://drupal.org/project/ubercart

To allow role assignment via "My account" area
http://drupal.org/project/autoassignrole

Also
http://drupal.org/project/og_joinrole
http://drupal.org/project/civimember_roles

Older modules
http://drupal.org/project/user_autorole (5.x)
http://drupal.org/project/rolesignup (5.x & unpublished)

Hopefully someone will be able to unify this mess.

PM Growl is a module that adds a simple ajax layer to private message module (http://www.drupal.org/project/privatemsg) and alerts you of new messages using the jQuery growl plugin (http://stanlemon.net/pages/jgrowl).

This allows for simple instant messaging type applications in the site, with an elegant pop-up in the screen.

Internationalization module allows to specify multilingual variables but often this is not enough for sites using Domain Access. Domain Internationalization module allows customizing variables based on domain and language. It depends on Domain Access and Locale modules and can be used combined with Domain Locale and Domain Conf as well as i18n.

This module add a disclaimer to your website using Colorbox module with configurable actions (enter, exit).

This modules integrates web tracking solution from etracker:

etracker is a leading provider of solutions and services for web analysis and optimisation of online marketing campaigns. etracker solutions are designed to meet the needs of your online business model and are 100% compliant with data privacy requirements.

etracker for Drupal supports Drupal 6 and 7 and soon also Drupal 8. The current modern etracker API version 4.0 is only supported by the D7 version of this module and forward.

Confidence in eCommerce is a big issue and seals or certificates from respected institutions help to gain visitor's trust in online shops much better than without them and it gets the visitors to spend more money.

One of those trusted body's in Germany is TrustedShop. They have analyzed and approved several thousand online shops so far and granted their highly regarded certificates.

Online shop customers do have the choice after completing an order in a TrustedShop-certified onlie-shop to sign up for an insurance for that order with full money back guarantee.

This module adds a new widget to the CCK Userreference field type, in order to use the Realnames for autocompletion.

This module allows you to create custom teasers that link to any url, external or internal, and also quickly create views for those teasers.

The support module provides a basic ticketing system and helpdesk that is native to Drupal, offering complete email integration.

Support for Drupal 8
Development of an 8.x version of this module has started. It is a complete re-write and re-architecture built on Views, Entities and OG. A migration path will be provided from the latest 6.x-1.x release; we hope the community will contribute a patch to also provide a migration path from the latest 7.x-1.x release. We aim to make the first beta releases available during the Fall of 2015.
https://github.com/tag1consulting/support

The Support module offers the following features:

• Ticketing activity is illustrated with colorful charts (depends on the Chart API module).
• Tickets can be assigned to users (and users can view all tickets assigned to them).
• Tickets support states (new, active, pending, closed, etc) and priorities (low, normal, high, critical, etc).
• Configurable email notifications for new and updated tickets.
• Email integration allows tickets to be created and updated via email, with support for attachments. New users can be automatically created. Ticket properties can be updated via email (using included support_mailcmd module).
• Highly configurable client and user ticket overviews, highlighting tickets that haven't been updated for a long time.
• Fully integrated with Drupal's search functionality, users can only search for tickets they have access to.
• Supports an unlimited number of clients, each with their own configuration and access permissions.
• Tickets are nodes, ticket updates are comments.

The module allows you to show node author information in a custom format.
As it uses the cck userreference field, you can easily change the displayed author and keep the real author information in the uid field of the node table. This is useful if you work with freelance authors/journo's or if somebody else handles the actual content input/upload.

To use the module: