LinkBird is a Rank tracking,link building,backlink analysis and keyword research all in one tool. Will shoot you a email alert when it finds a new backlink directing to your website.
ScrapeBox is the “Swiss army knife of SEO”. Even thought is was built for black hat SEO, but still you can use it for white hat link building tasks for instance, finding contact information, link posting and even keyword research.
Upcity is a blend of SEO tool services and online marketing course. So in other words it means along with getting a list of charts and errors which makes no sense to you, this tool will take you on the right path as well. This tool is perfectly suitable for Small Businesses.
This tool beats all other link analysis tools by a mile. With a massive index of over a trillion links that updates at least once a day, its also very user friendly. Personally, Ahrefs is one of the few SEO tools that we use personally.