Network Inventory scanner with OS detection and installed software

Anyone know of a free or low cost network scanner/inventory with OS detection and installed software?

So far I have used:
Advanced IP Scanner that states it has OS detection, but can't find the option to enable it.
Mitec Network Scanner, so far the best one but doesn't export the data properly.
Spiceworks, having trouble updating to latest version so I haven't had a chance to test it.
TheDude, not sure exactly how to get the extra information out of it as far as OS and software audit.

Any suggestions are greatly appreciated, needing something that can possibly do incremental scans like TheDude and Spiceworks that will allow me to run for several days and capture a true scheme of my network/OS/installed software.
Josh GarrettNerdAsked:
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Josh GarrettNerdAuthor Commented:
Just to post an update, I had forgotten that I used Netgear Genie which is great for OS detection but it shows it on a map style layout and not tables.
Kamran ArshadIT AssociateCommented:

Please check the below options;

Spiceworks is the best for this purpose. Did you open a ticket with their support for upgradation issues? try out manageengine as well.

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Josh GarrettNerdAuthor Commented:
I was able to get Spiceworks to update and start scanning. I'm going to check it against a manual inventory at one of my sites.

I may look into purchasing that Total Network Inventory software if the company grows any larger. Pretty comprehensive. Thanks!
Josh GarrettNerdAuthor Commented:
Going to leave this open for a little longer just to see if there are any other suggestions out there.
Josh GarrettNerdAuthor Commented:
Spiceworks wasn't able to compete with my manual inventory, but the computers it did scan had comprehensive info that is very useful. Not sure how it couldn't scan the PC's as all of them are on a domain and I used an admin account to run the scan.

Thanks Kamran for the help.
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