Web server management software

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cPanel is a web hosting control panel software developed by cPanel, L.L.C. It provides a graphical interface (GUI) and automation tools designed to simplify the process of hosting a web site for the website owner or "end user". It enables administration through a standard web browser using a three-tier structure. While cPanel is limited to managing a single hosting account, cPanel & WHM allow the administration of the entire server.

Plesk is commercial web hosting and server data center automation software developed for Linux and Windows-based retail hosting service providers.

web application to manage servers

ISPConfig is an open source hosting control panel for Linux, licensed under BSD license and developed by the company ISPConfig UG. The ISPConfig project was started in autumn 2005 by Till Brehm from the German company projektfarm GmbH.

DirectAdmin is a graphical web-based web hosting control panel allowing administration of websites through a web browser. The software is configurable to enable standalone, reseller, and shared web hosting from a single instance. DirectAdmin also permits management of server tasks and upgrades to package software (such as Apache HTTP Server, PHP, and MySQL) from within the control panel, simplifying server and hosting configuration.

process of testing and verifying that end-users can interact with a website or web application as expected

Kloxo (formerly known as Lxadmin) was a free and open-source web hosting control panel for the Red Hat and CentOS Linux distributions. As of October 2017, the project has been unmaintained with a number of unresolved issues, and the project's website is offline.