Here's a list of products and services that we at SocialAdr have tried and can honestly recommend to other marketers.

Keyword Research

SECockpit

• Recommended if you do a lot of keyword research, as it's the pricier option
• Easily blows away ALL other keyword research tools.
• Since it's a web service you never have to worry about Google CAPTCHAs or proxies.
• You can run multiple queries at once.
• One of the slickest interfaces we've seen for an Internet Marketing tool.
• To learn more, check out this recorded webinar that SECockpit did for SocialAdr members.

Micro Niche Finder

• Recommended if you occasionally do keyword research, as it's the cheaper option
• An easy-to-use and powerful keyword research tool.
• Save tons of time compared to manually using free tools like Google External Keyword Tool. 
• Shows useful indicators like “Strength of Competition” (how much SEO your competitors have done) and “Measure of Backlinks” (how many backlinks you would need to get to Page 1 of Google.

Link Building

Link Emperor

• A 1-stop shop for all your SEO services.
• They handle your keyword research, analyze your Google Analytics, and integrate with many popular link building services.
• Link building services include: forum profiles, social bookmarks, web directories, blog comments, linkwheels, article directories, web 2.0 sites, backlink indexing, video directories, and much more.

Link Indexing

BacklinksIndexer

• In our tests, this service improved indexing rates of social media links by 48% over a 3 week period - that's huge!
• Super easy to use, just import your URLs.

Hosting

HostGator

• Affordable shared, VPS, dedicated, and reseller web hosting.
• Prices start at less than $4/mo.
• Great customer service and reliable infrastructure.
• They seem to be affiliate marketer-friendly too.

Backlink Checking

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Spin Rewriter

• Easily rewrite articles or paragraphs of text with a single click.
• It actually understands the text and only suggests meaningful synonyms.
• Does paragraph, sentence, phrase, and single-word level spinning.