Lynx was one of the earliest Web browsers, in fact, for a period of time it was the only popular hypertext browser available. Initially it was mean't for UNIX, VMS only but gradually it was ported to Linux, DOS and finally Windows. It is a text-only browser, so when newer browsers supporting images arrived, Lynx lost much of its popularity.
However, Lynx still remains as one of the best tools for any need that requires webmasters to see how their webpages look in text mode including search engine optimization. Lynx is an important SEO tool since it allows the webmaster to view the website exactly as the search engine crawlers and bots do.