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。

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.

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

查询独立站流量

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.