Extensions are installable packages which give CiviCRM new functionality, and this directory provides a centralized list of extensions which the CiviCRM community has created.

Further resources:

The native CiviCRM extension ContactSegment has been funded by PUM Senior Experts (https://www.pum.nl) and developed by CiviCooP (https://www.civicoop.org/). It is an open source extension and available for the general public under the AGPL-3.0 license....
Current Usage: 0
The DefaultDashlets CiviCRM extension creates a settings page that allows administrators to define the active dashlets for new users based on group membership. Usage Enable the extension and visit /civicrm/admin/defaultdashlets (Administer > Default Dashlets) to set default dashlets by group....
Current Usage: 0
This project provides a kind of webservices integration between a CiviCRM (Drupal-based only, Canada-specific) installation and the Represent Open North web service at http://represent.opennorth.ca...
Current Usage: 0
This module provides an easy way to change the Drupal user to CiviCRM contact associations through the Drupal user page. Drupal project page....
Current Usage: 0
This extension adds the ability to display a premium on a contribution page only when a certain set of membership type and status criteria are met. This enables an organization to offer "member only" premiums for early renewal or other promotions. The membership status field can also be set to "Expired" to create rejoin incentives, visible only to expired members....
Current Usage: 0
This module is used to "certify" participants of CiviEvents. A certification in this context is adding a CiviCRM contact to a CiviCRM group and keeping a record of that transaction. Certifications can occur automatically as participants change status (using CiviCRM API), or in bulk for any event by using the 'sync' tab on the Certification Rule....
Current Usage: 0
This extension allows organisations to upload Just Giving Payments into CiviCRM. The end result is that the contributions and donors are all recorded within a single batch which can then be reonciled to the finance system. Installation Guide can be found here...
Current Usage: 0
Part of the Sunlight Congressional Districts module.  Provides a way to automatically get congressional district information about your contacts into CiviCRM using the Sunlight Congress API....
Current Usage: 0
When a home address for an Individual contact in Austin, Texas is added to CiviCRM when importing or manually this extension finds its City Council District using shape files produced by the City of Austin Texas and GEOS - Geometry Engine, Open Source and sa...
Current Usage: 0
DONOR MANAGEMENT SOLUTIONS + PAYMENT PROCESSING PTC offers innovative solutions such as mobile giving, event registration and donor management combined with cost-effective, secure payment processing that is easy to integrate with your current Civi database and website. Reach donors in new ways and raise more funds for your church or non-profit organization....
Current Usage: 0
Displays CiviCRM events in a calendar using the "fullcalendar" jQuery plugin.
Current Usage: 0
This CiviCRM extension tries to makes CiviCRM less intimidating for the not so tech savy user.
Current Usage: 0
The aim of this extension is to extend the CiviCase component functionality to update the case status any time.
Current Usage: 0
This module allows for taxonomy vocabularies and terms in Drupal to be mirrored with groups in CiviCRM....
Current Usage: 0
Small helper module for migrating a CiviCRM database for v 4.2 or lower....
Current Usage: 0