Extend and customize Drupal functionality with contributed modules.
If a module doesn't quite do what you want it to do, if you find a bug or have a suggestion, then join forces and help the module maintainer. Or, share your own by starting a new module.
A CAPTCHA is a challenge-response test most often placed within web forms to determine whether the user is human. The purpose of CAPTCHA is to block form submissions by spambots, which are automated scripts that post spam content everywhere they can. The CAPTCHA module provides this feature to virtually any user facing web form on a Drupal site.
We do this our spare time, which is unfortunately almost nonexistent at the moment due to real life obligations. To give the CAPTCHA module the required level of maintenance, an extra co-maintainer would be welcome. If you're interested in helping with this very popular module, please contact me or open an issue in the CAPTCHA module issue tracker.
The Login Destination module allows you to customize the destination that a user is redirected to after logging in, registering to the site (7.x), using a one-time login link or logging out (7.x). The destination can be an internal page or an external URL. It is possible to specify certain conditions like referring pages or user roles and make the destination depend upon them. You may use PHP snippets to provide custom conditions and destinations. It is also possible to keep users on the currently visited page after logging in or out.
Designed to be the successor of the core profile module, which is deprecated for Drupal 7. In contrast to the deprecated module this module provides a new, fieldable 'profile' entity - leverage the power of fields!
The RealName module allows the administrator to choose fields from the user profile that will be used to add a "real name" element (method) to a user object. Hook_user is used to automatically add this to any user object that is loaded. It will also optionally set all nodes and comments to show this name.
This module builds user profiles as content (aka nodes), which opens the opportunity to use all the powerful modules for content for user profiles too, e.g. the Content Construction Kit (CCK). It's intended to be simple and useful, but extensible by further modules.
Content profiles can be restricted to certain roles; the module also supports separate content profiles for different roles.
The Multiselect module defines a widget to be used with CCK fields. It allows the user to select multiple items in an easy way. It consists of two lists, one of all available items, the other of selected items. The user can select an item by moving it from the unselected list to the selected list. This module relies on the built-in jQuery features of Drupal and does not require any additional modules other than the CCK module set (Drupal 7 version has no dependencies).
The Lightweight Directory Access Protocol (LDAP) project provides integration with LDAP for authentication, user provisioning, authorization, feeds, and views. It also provides apis and building blocks (query and server configuration storage) for other modules.
The CAPTCHA Pack module contains several CAPTCHA types for use with the CAPTCHA module. The CAPTCHA Pack module is meant to provide lightweight, yet effective alternatives for the traditional image CAPTCHA, which is undesirable in certain situation (e.g. bandwidth restrictions, cpu restrictions, accessibility constraints, etc).
This module provides an API for users to gain or lose points for performing certain actions on your site.
In conjunction with other modules, such as the Userpoints Nodes and Comments users can accumulate points for actions such as posting nodes, commenting or moderation duties.
Use one of the many contributed modules to extend the functionality of the module to include point accumulation on page views or votes, upgrade roles based on point balance, or purchase goods from your store.
This module is useful in providing an incentive for users to participate in the site, and be more active.
Spambot protects the user registration form from spammers and spambots by verifying registration attempts against the Stop Forum Spam (www.stopforumspam.com) online database. It also adds some useful features to help deal with spam accounts.
This module works well for sites which require user registration before posting is allowed (which is most forums).
Administrators are able create relationship types (friend, coworker, etc). Relationship types can be setup to be one-way or mutual. If a relationship type is one-way (subscriber) only the requester is shown as relating to the requestee. Relationship types can also be set as needing or not needing approval.
Administrators can give users the option to auto approve relationships on a per-relationship type basis.
Bundled with the main module are add-on modules providing functionality that not every site will need:
User Relationship Mailer will (conditionally) send email notifications regarding relationship creation/removal/approval/disapproval/cancellation.
User Relationship Defaults creates default relationships to any user joining the site (think Tom on MySpace).
User Relationship Implications allows admins to specify implied relationships (Manager implies Coworker) that are automatically created.
User Relationship Invites requires the Invite module and allows users to specify a relationship to a user that they invite to join the site.
User Relationship Privatemsg integration with the privatemsg module showing your relationships in the quick select list.
This module allows site builders to set up fine-grained permissions for allowing users to edit and delete other users — more specific than Drupal Core's all-or-nothing 'administer users' permission. It also provides and enforces a 'create users' permission.
Great utility module which makes the password field optional (or hidden) on the add new user page (admin & registration). If the password field is not set during registration, the system will generate a password. You can optionally display this password at the time it's created.
Visit the user/account settings page to change the behavior of the password-generation.
Notifies administrator (site_mail) of new user registrations. Starting with Version 1.2 you can now define both the address it goes to and the subject and messages emailed. Starting with 1.8 you can get emails when someone updates their profile as well. Starting with 1.11 you can use actual profile pieces not just a list of them all. Example if you have a profile_name you would insert in the template !profile_name and the value of profile_name will be inserted.