Help me find site

Help me find this site allows you to find new sites world wide. Help me find this site allows users to find and access new sites all over the world with similar themes. You simply enter a word which describes a subject (probably with www) and the program touches accessible variants. If the site with such name exists, it will be marked by green color, differently it can be allocated either red or yellow color. All this information is accessible in the report, where also it is possible to open the found site in a browser. It is very convenient for using for search of sites, similar on subjects, for example of archives of the software.