Internet Timeline is a Chrome add-on that delves into the historical evolution and terminology surrounding the global system of interconnected Internet Protocol (IP) networks. It clarifies the use of the term "Internet" as a proper noun and its common misconceptions, highlighting its capitalization rules and historical context. The add-on educates users on the distinction between the Internet and the World Wide Web, emphasizing that the latter is just one facet of the vast array of Internet services available.

The program provides insights into the interconnected nature of early computer networks, where "internet" was both a noun and a verb, showcasing its evolution into the modern-day network we rely on. By shedding light on the significance of protocols like HTTP and demystifying technical jargon, Internet Timeline aims to enhance users' understanding of the Internet's complex ecosystem.