Website builders are software tools which generally enable the building of complex websites without manual coding. They usually fall into two major categories: WYSIWYG and offline. A website builder may be either online or offline, but not both at the same time. Some are geared towards a WYSIWYG environment, where all the code is copy-and-paste and you simply add and delete the files as required in a WYSIWYG website builder; others involve complex web technologies like PHP and HTML, requiring more programming code for the web pages. Offline website builders are also available for offline use, but these tend to be less efficient for building websites as you would not have access to the databases of websites like an online WYSIWYG site.
A good website builder should give you a wide choice of templates to choose from, and also give you the option of customizing some aspects of the page templates, such as color and font styles. You should be able to drag and drop any type of widget or image onto the page, as well as change its position and size. Many templates are available free on the internet, and even contain a wealth of information about how to use them. You can also download free offline templates that are just as good as the ones that you would buy. Another thing to look out for in website builders is whether they offer testing services or whether you have the option to try out their site before purchasing it.
The best website builders either offer free or paid service for online and offline site builders respectively. Free services usually lack some essential features, and they do not have a good support system so it is better to go for paid services. If you purchase a template from an online service, you can then download it and install it onto your computer. There are no restrictions, since it is a stand-alone application so you can edit it whenever you want, and there are no limitations on the content you can include. You can either use it for building a web-based application, or create an offline site.