BINARYPACKRAT  I bought the suite (all apps) I love them! They work.   
(Version 3.11.4)

XPLICIT  Buyers beware indeed. There is no contact information on the company's website and even their domain (link-assistant.com) registration information isn't visible. Makes this company and their software quite trustworthy, don't you think so too?  
(Version 3.8.7)

BUMBLEB  Buyer beware: Even though the software can be used after the expiration of the "Live Plan" it becomes NAGWARE !!! All the time it reminds you that you need to extend the Live Plan, even though I don't wish to do that at this moment, since I rarely use this app.

Another reason I will *not* purchase a Live Plan is that the company is very shady. I think they are eastern european, but I don't know. Their website has no information to find anywhere with a mail address or anything. And the WhoIs information for their domain is "protected" by some privacy-service! What are they hiding???

PS: I know the purpose of the Live Plan is updates for the search engine algos, but please guys, my Live Plan expired last week, so I guess I would be fine without the nagging reminders!  
(Version 3.7)

DERBBRE  Decent piece of software, does nothing too exciting. You can get a lot of this done with Google Webmaster Tools and the like. Mainly, I don't like the way they have a "new" release every dang day with no release notes. Shameless self promotion. Buy some advertising, guys. Most of us read these sites every day and you are crying wolf, here.  
(Version 3.6.2)

PICON  An update like every other day?? I like the attention to detail, but unless it is an emergency, how about combining a couple of those bug fixes into more of a robust update instead of subjecting your customers to constant updates and a waste of our time. And if you insist to keep barraging us, at least post what has changed so we can decide whether to take the time to install the new 3.5.2.0.0.0.0.x version!  
(Version 3.5.2)

OSSPLUS  great tool for seo.

4.5 stars! ;)

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http://www.tech-seo.com  
(Version 2.0.7)

TINSOUL  Purchased the full version of Spyglass a while back and I have been underwhelmed.

SEO Spyglass basically does what it says ... but you're not going to be surprised by great results. Of course, it is just reporting information that is readily available from the search engines. I thought it might be worthwhile to have it gather everything into one place, but I was wrong.

*) It is very basic. You can put in keywords or a URL and have the tool examine it.

*) I found that the results were off-topic. That is, not what relevant for what I wanted. The real disadvantage is that you can't re-direct/pare down the results. You know how you use advanced search techniques in search engines to find what you really want? You can't do that with SEO Spyglass ... which means you're back to the early days of the internet. Searching through a ton of results that you don't care about.

*) It just spits out a bunch of data. It's up to you to make sense of it and get results. If you're a webmaster looking for an automated way to gather a bunch of stats, I guess it would be OK. If you really want a tool to help you improve your search engine ranking, look elsewhere.

*) It is sloooow. I've let it run overnight before and it never finished.

In short, the interface is basic, but getting what you want out of it is very difficult. If you want to spend a lot of time getting up to speed and analyzing data, maybe you'll like this software.

Anyway, they have a free trial that you should definitely try first. I wish I would have ... then I wouldn't have purchased the full version. There are better services out there.  
(Version 2.0)