What do you mean by headless browsers?
A software that works without graphical user interface is known as headless software. And it implies, what does the term headless browser mean? Explaining further, a web browser that can work without any graphical user interface and work over command line is called headless browser.
Here is the list of Free and Open source Headless Browsers Available Online
Note: We are not ranking any of them as best and just listing the available Headless browsers those are free and opensource for Automation testing.
HtmlUnit is a headless browser testing tool which has no graphical user interface and meant for Java programs. It is not a generic unit testing framework and provides an API that allows you to invoke pages, fill out forms, click links, etc. It features the supports for cookies, HTTP and HTTPS protocols, HTML responses, submitting forms, clicking links, DOM model of the HTML document, basic and NTLM authentication, POST and GET submit methods, Proxy server and more…
Different opensource tools use the HtmlUnit as their underlying browser some of them are:
- Canoo WebTest
- Celerity and more.
For more info visit the official website.
Selenium is a suite of headless browser testing tools to automates web applications for testing purposes.Selenium supports headless testing using its class called HtmlUnitDriver. It works across many platforms, APIs, and frameworks.
Watir is an open source Ruby library for automation testing which interacts and perfroms tasks on web pages as a normal people do such as clicking links, filling out forms and validating text.
SimpleBrowser is a flexible headless browser built on .Net 4 framework and capable of performing browser automation tasks. It provides API to easily extract the data of elements on a web pages using a variety of matching techniques and then interact with those elements with methods such as Click(), SubmitForm() and many more.
SlimerJS is similar to PhantomJs run on the to pGecko and allows to interact with a web page using an external JS script. It can be useful in functional tests, page automation, network monitoring, screen capture, web scraping etc. It running on the browser engine of Mozilla Firefox and compatible with CasperJS
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Note: It is not maintained anymore after the Chromium headless browser
See the Complete Github List of all existing of headless browser: Link
Note: If you want to add any other well known Headless browser in this list, please let us know using the comment section.