Chatstack is the leader in self-hosted PHP live chat software for your website and has many compelling advantages over competing live chat solutions. Chatstack is a self-hosted chat application, powered by PHP and MySQL and is quick and easy to install on your website, especially for non-technical users. Send messages to your customers and respond quickly to their needs with our user friendly interface, allowing you to build and nurture customer relationships. With no subscription and no ongoing monthly fees, our online chat software is the most cost effective customer service solution for your businesses web site. Our live chat widget or optional popup client window is fully customizable to include your own brand logo, colors and desired welcome message. Advanced customization is also available by editing the template CSS files for a fully custom design. Chatstack is available on major platforms with our Windows, Mac and Linux apps that can be installed on all your team computers.