Sort out common Seo online tools

I just saw it from the Internet, so I recorded it. Haha!

1. Basic Class
Http://top.baidu.com Baidu search ranking
Http://index.baidu.com Baidu Index
Https://adwords.google.cn/select/KeywordToolExternal Google Keyword tools
Http://www.google.cn/trends Google search engine trends
Http://sitemap.cn.yahoo.com Yahoo external link Tool
Http://siteexplorer.search.yahoo.com website analysis (English)
Http://www.zhuici.com/keyword Analysis
Http://www.pipiki.com/website Value Assessment
Http://www.linkhelper.cn/link query

2. Expansion
Http://tool.chinaz.com/Tools/Robot.aspx search spider simulated crawling
Http://www2.baidu.com/inquire/price.php Baidu keyword bidding Query
Online production of http://www.xml-sitemaps.com/website Map
Http://www.webconfs.com/similar-page-checker.php website similarity query
Http://tool.motoricerca.info/robots-checker.phtml robots file online checking tool
Http://www.seo-sh.cn/keywords/key word density Query
Http://www.seo-sh.cn/seo-cidian.html Seo terminology dictionary-Chinese and English Contrast