SEOquake

在这个论坛上，你可以获得一些非常有价值的反向链接服务，例如来自 mashable.com、Forbes.com、TechCrunch.com 和世界上许多其他大型网站的反向链接。

查询网站反链工具

分析竞争对手的网站 SEM 和 SEO分析。Semrush offers solutions for SEO, PPC, content, social media and competitive research. Trusted by over 7000000 marketers worldwide

强大的网站流量分析工具 。Website Traffic Analysis & Competitive Intelligence | SimilarWeb

强大的SEO工具，可以分析关键词和外链等。t have to be an SEO pro to rank higher and get more traffic. Join Ahrefs – we're a powerful but easy to learn SEO toolset with a passionate community.

谷歌插件，提供关键词SEM各种指标。Keywords Everywhere is a browser add-on for Chrome & Firefox that shows search volume, CPC & competition on multiple websites.