Cheap Seo Tools

Linkody

Linkody Tells you you once you get (or lose) a backlink. Additionally, it gives info on your new backlinks (such as Mozrank and anchor text). Cool Feature: Linkody mails you when a rival gets a new backlink. That way you can swoop in and try to find the same one for yourself.

Similar Content Prospecting Tool (SkyRocket)

This Useful tool gives you a list of 120 pages which have already connected out to content on your own subject (which makes them excellent connection prospects).

HARO (Assist a Reporter Out)

Wish To get backlinks from The New York Times and The Wall Street Journal? It's possible to hire a pricey PR company...or you may use HARO. HARO is a "dating agency" that connects journalists with resources. If you hook up a journalist with a great quote or stat, they will reward you up with a mention or link. Requires a little grinding to get a single mention, but the hyperlinks you get could be solid gold.

Link Research Tools

A Strong link evaluation tool with some link construction features built into it (like connection prospecting and outreach).
But LRT's cool feature is its own "Link Detox" tool. This instrument automatically scans your backlinks and shows you that links put you in danger of a Google penalty (or links that generated a penalty). In other words, it creates identifying spammy links super simple. When I conducted an evaluation of Link Detox it was nearly 100% accurate in differentiating between positive and negative links.

Linkstant

Linkstant You an email alert each time you get a brand new link. Why is this helpful? Well You may turn that 1 link into multiple links (and a connection) with a quick "hey, thanks for linking to me" email. It also can help you identify reputation management issues quickly so you can nip them in the bud before they blow up.

Free Broken Link Checker

This Tool assesses a site for broken links. Useful for broken link building.