Action Hooks

Display a mini shopping basket in the side bar of your WHMCS client area
Last Updated: 4th December 2011
522 Votes Commercial
Ever had a client cancel a product only to discover that they had put in the cancellation request after you had already invoiced them for the upcoming renewal? Well my action hook will automatically cancel the invoice once the product has had its status changed to cancelled
Last Updated: 14th September 2009
490 Votes Free
A complete free trials mod that handles multiple email warnings as well as suspension before termination in order to give the customer more time to realize their free trial was over before we deleted their files from the server.
Last Updated: 4th October 2010
361 Votes Free
Allow your affiliates to create their own coupon codes which link to their referral account.
Last Updated: 25th August 2010
335 Votes Free
Automatically cancel all unpaid invoices (if possible) for a hosting account that is being terminated.
Last Updated: 18th July 2010
298 Votes Commercial
This action hook allows you to control number of ordering free trial products.
Last Updated: 17th January 2011
297 Votes Free
A simple unecoded hook to automatically add clients to your MailChimp list each time a new client is created at your WHMcs installation.
Last Updated: 5th November 2010
297 Votes Free
Contact Capture SugarCRM Hook allow you to capture your client's information into a Contact Table of Popular Customer Relationship Management SugarCRM (www.sugarcrm.com):
Last Updated: 11th December 2012
289 Votes Free
Don't loose your modified language settings after doing an upgrade again. Simply add your language variables to the language file in the custom directory.
Last Updated: 3rd November 2010
277 Votes Commercial
Web2Lead : Leads Capture Salesforce Hook allow a capture of new WHMCS client information into a Leads Table of your Salesforce.com account. The information captured is as follows: First Name, Last Name, Company Name, Email Address, Address 1, Address 2, City, State/Region, Zip Code, Country, Phone Number.
Last Updated: 11th December 2012
271 Votes Free
Automatically handle cancellation of free domains (0.00) when a hosting service is canceled/terminated
Last Updated: 27th October 2010
271 Votes Commercial
Place restrictions on promotion codes based on city, state, postal code, or country.
Last Updated: 25th August 2010
270 Votes Commercial
This action hook allows you to bundle products, so they activate, suspend, unsuspend & terminate together. With one click users are able to add a bundled product and have 2 products automatically setup.
Last Updated: 10th June 2011
244 Votes Commercial
Included primary world currencies (USD, EUR, JPY, AUD etc) and currencies of CIS (UAH, RUR, BYR)
Last Updated: 3rd January 2013
230 Votes Free
PunBB automatic registration
Last Updated: 8th April 2011
229 Votes Commercial
Hook for automatic add your customers to Correton Email Marketing
Last Updated: 29th April 2011
204 Votes Free
Close Account and Inactive account
Last Updated: 26th November 2011
155 Votes Commercial
This action hook will automatically set the last payment method used by the client as the new default for their product (hosting products OR addons), only if they did not already set their profile to use this gateway for future transactions.
Last Updated: 18th July 2010
147 Votes Free
Automatically detect and set client currency on order pages :)
Last Updated: 8th February 2012
115 Votes Commercial
This module has developed by GK~root team to allow automatic script installation while ordering the hosting package . All you need to do to get started is to download the installation package, install it and start working.
Last Updated: 20th April 2012
100 Votes Free
The Sitepearl Script Installer allows WHMCS-based web hosting providers to automatically install scripts such as Joomla and Wordpress on a client's hosting account as soon as their account is created.
Last Updated: 9th June 2012
75 Votes Commercial
The WHMCS Cancel Order module will check orders that are pending and cancel them on the daily cron job if there are older than your predefined setting.
Last Updated: 26th October 2012
69 Votes Commercial
Sends and receives more fraud information to maxmind.
Last Updated: 6th July 2012
56 Votes Free
This action hook will register client to Mybb database upon registration in WHMCS with same login credentials.
Last Updated: 13th April 2013
29 Votes Free
Remove the new editor in v5.1.2 and replace it with tinymce editor
Last Updated: 19th October 2012
26 Votes Free
We have create an addon so that when someone places an order and it is marked as fraud due to any reasons, it will automatically open a ticket and email them telling them that order was place as fraud and investigated. The staff can then response back immediately telling them the reason for the investigation it may not be a fraud.
Last Updated: 10th November 2012
24 Votes Commercial
Using the Softaculous Auto Install module you can configure your product to auto install an application when your users Signup and their hosting account is created.
Last Updated: 25th January 2013
24 Votes Free
This is a addon to open ticket automatically when order is marked as fraud.
Last Updated: 14th August 2012
20 Votes Commercial
Finds tickets not linked to a client, and correct it if possible
Last Updated: 11th December 2011
20 Votes Commercial
Automagically activate affiliate status of clients when their account is created.
Last Updated: 8th December 2012
18 Votes Commercial
Prevent clients with "Collections" invoices from ordering.
Last Updated: 24th November 2012
17 Votes Commercial
Order Assistant helps you to automate order management process. It can automatically accept Pending Orders that already Paid (for selected products); send an email or open a ticket with client if Pending Order has been Unpaid for a few days; and eventually cancel the order if no payment is made still.
Last Updated: 8th June 2013
17 Votes Commercial
This module is useful to Resell Softaculous licenses from your WHMCS installation. The module makes API calls to Softaculous and issues, cancels, edits, suspends the license from your Softaculous account.
Last Updated: 25th January 2013
17 Votes Free
This addon uses the Action Hook system and runs after the daily WHMCS cron job. It checks for any Unpaid invoices for a terminated product and automatically marks them as canceled.
Last Updated: 26th January 2013
14 Votes Free
Our Currency Detector script makes your website more powerful, now you can detect currency of new visitors and show prices in currency based in their country!
Last Updated: 20th February 2012
10 Votes Commercial
This hook automatically adds and deletes client email addresses to a defined subscriber list in Campaign Monitor.
Last Updated: 19th February 2013
10 Votes Commercial
This hook will display a top menu and stick it to the top of the page when you scroll down
Last Updated: 4th May 2013
9 Votes Free
Prevent customers with invoices that are overdue or in collections from ordering new services until paid.
Last Updated: 4th March 2013
7 Votes Commercial
ModulesGarden geolocation hook for WHMCS allows you to set up automatic switch of currency, language and client area template.
Last Updated: 11th March 2013
4 Votes Free
Now you can display your cart items and prices on top of WHMCS
Last Updated: 24th March 2013
3 Votes Free


WHMCS is easily extendible through the many Developer Resources we make available, including modules, hooks, addons, API's and templates. So here you will find many third party developed extensions that can enhance and add to what WHMCS can do for you, as well as a number of Official Addons created by ourselves.

Disclaimer: The addons available here are provided by third party developers. WHMCS has not vetted the code in any of the addons listed here, and cannot be held responsible for any problems resulting from the use of them. We are also unable to provide support for any issues with third party code.

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