Web tools are used by web developers to test the user interface of a website. They can contain multiple tools that process input data entered by users and return outputs like features, maps, reports or files. Web 1.0 refers to the early, read-only web that allowed users to only search and read information from static sites with passive audiences. Examples include directories and content download sites. Web 2.0 represents the current, read-write web where users can generate and share content through interactive sites that facilitate collaboration. Examples of social media, blogs, wikis and applications illustrate how users can both read and write on Web 2.0 platforms.