Tools for SEO:
This tool allows you to constantly monitor and verify links pointing to a website. It also provides a large amount of very useful data for analyzing competing sites.
SEMrush helps track your ranking on search engines, and a lot of data is provided like the ranking of sites that are positioned on the same keyword.
This is a visualization tool that analyzes the internal architecture of a site that lets you know what a crawler sees when it scans your page, and it also provides interactive views that provide you information on the structure of your site.
This is an open source and free software which helps you to analyze data from a website, it is used to study structures of pages on a site.
It offers a set of practical features that perform a full site audit such as, real-time keyword positioning tracking and monitoring.