These are just a few examples of sites using the Ajax Availability Calendar script.
If you would like to see your website listed here, drop me a line via the contact form and I will consider including it.

The script (version 3) has been downloaded 92971 times since Feb 2010.
Unfortunately I don't have any official figures as to how many sites are using the calendar, but estimates from a specific keyword search in Google makes me believe there are over 5000 sites currently using the calendar.

Important - PHP 8

There is an issue with the script in PHP 8 which is causing the calendar to not display properly.
Here is a quick fix for existing versions (no need to update):

In ac-includes > common.inc.php and change line 16 (latest version) from this: 

//error_reporting(E_ALL ^ E_NOTICE);
to this: 
error_reporting(0);

This code turns off PHP error reporting just for the calendar script.

Version 4

I am currently working a completely new version to adapt the code to more modern development techniques.

Follow the project on Github

See demo version 4

icon version 4
New features:
  • Converted into Web Component.
  • No external JavaScript libraries.
  • No images - use modern CSS to show availabililty states.
  • Calendar loaded via JavaScript (no more iFrames).
  • Simple CSS.
  • Responsive:
    • Automatically calculates the number of months to show.
    • The month days adapt to fill the available space.
  • Sinple integration into front-end bookings form.
  • Renovated admin panel with:
    • Possibility to add basic booking details.
    • Interactive customise styling "no code".
    • Language translations stored in the database.
    • Unlimited users and items.
    • Password reminder via email.

Help with installation?

The calendar script is very simple to set up on your server. However, if you prefer, I can install the calendar on your server for you.
Requirements: I will of course also require ftp access to your server. The cost for this service is 40 Euros * (payable via Paypal) however this may need to be adjusted if you have "special" installation requirements.
If you are interested in this option, don't hesitate to contact me via my contact form. I will get back to you as soon as possible.

* Not included in base price: