Tools of today are quite simple and basic, but seriously you should have a couple of their bookmark.
1. domain neighborhood Checker-tool looks at the IP address of your domain, and subnet and ranks them based on the number of links each on the inbound sites.
2. YouGetSignal.com-the site has several free tools aside from reverse IP check: WhoIs LookUp, network information Google gadget, etc. Talking about Reverse IP-control function, I like how it draws your attention to sites on the same IP who "seem to have explicit content" (obviously based on the "bad" words that are used in the domains). We do not know whether these sites in any way affect your Google records, but it is some useful information to keep in mind.
3. SitesOnMyIp-tool to undo the check IP and displays every site design and content, as soon as you click any.
4 TraceBullet – this is a practical tool that combines several basic tools that allows you to find the IP address of tool, see the headers sent by the server, do a whois lookup, etc.. The best thing about the tool is that it is really quick and easy, so have it bookmarks for some basic tasks.
5. MyIPNeighbors – tool shows a list of sites on the same IP address in alphabetical order.