Extensions Directory

Provides support for the sweetalert2 library, a "beautiful, responsive, customizable, accessible (WAI-ARIA) replacement for JavaScript's popup boxes".

This implements a simple firewall for CiviCRM that blocks by IP address in various scenarios.

Exports reports and search results directly into the native MS Excel format (xlsx).

Extension to support General Data Protection Regulation

Provides a way to keep Mailchimp Lists and CiviCRM groups in sync.

This extension permits a contact to be changed from one type to another.

Prevents users from overwriting their own record while trying to add a new participant / contribution / membership.

Monitoring extension from Coop Symbiotic, also used to deploy configuration fixes and some other maintenance helpers. Mostly used by Coop Symbiotic hosting clients, but also used by a few of our partners. The monitoring health checks are particularly useful (although they can trigger false positives in some cases, such as the Public Reports check).

Adds over 25 new fields to Summary Fields, including contributions by related contacts, plus fields for CiviMail, CiviEvent, and CiviGrant.

Provides an interface to manage user API access keys.

Creates Tax Receipts with distribution by email or print, detailed reporting, press ready

Minifies CSS/JS files which are passed through the assetbuilder in CiviCRM.
For example if it is installed on a CiviCRM system it will minify crm-menubar.css. If Stripe is installed it will minify stripe css/js.

Geocoder extension provides geocoding from multiple providers (default is Open Street Maps) with advanced features over core geocoding

Requires - CiviCRM 5.x, php 5.6

Credit : the Wikimedia Foundation