HtmlUnit vs. PhantomJS vs. iMacros vs. python-sql Comparison Chart

HtmlUnit is a "GUI-Less browser for Java programs" that models HTML documents and provides an API to interact with web pages, such as invoking pages, filling out forms, and clicking links, similar to a standard web browser. It offers fairly good JavaScript support, which is constantly improving and is capable of handling complex AJAX libraries, simulating browsers like Chrome, Firefox, or Edge depending on the configuration used. Typically used for testing purposes or retrieving information from websites, HtmlUnit is not a generic unit testing framework but is intended to simulate a browser within another testing framework such as JUnit or TestNG. It is utilized as the underlying "browser" by various open source tools like WebDriver, Arquillian Drone, and Serenity BDD, and is employed by many projects for automated web testing, including Apache Shiro, Apache Struts, and Quarkus.

The world's most popular web automation, data extraction, and web testing solution, now with Chromium browser technology for supporting all modern websites. Including sites that use dialog boxes, Javascript, Flash, Flex, Java, and AJAX. Perform in-browser testing across Chrome and Firefox. Write to standard file formats or use the API to save directly to a database. iMacros web automation software works with every website to make it easy for you to record and replay repetitious work. Automate tasks across Chrome and Firefox. There is no new scripting language to learn, allowing you to easily record and replay actions on each browser, so even the most complex tasks can be automated. Automate functional, performance, and regression testing across modern websites and capture exact web page response times. Schedule macros to run periodically against your production website to ensure it is up and running and behaving exactly as you expect.