Suggest some  sites  for free  software development guidelines?
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http://msdn.microsoft.com/practices/
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Here are some resources I use often:\nhttp://www.freeprogrammingresources.com/freetutr.html\nhttp://www.cprogramming.com/\nhttp://www.cplusplus.com/\nhttp://www.thefreecountry.com/documentation/onlinecpp.shtml
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http://www.programmersheaven.com/
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http://www.geocities.com/\nhttp://www.freewebs.com/\nhttp://www.bravenet.com/
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Try also searching for Open Source
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While there are many, I recommend you start at the resource below.  They have a large collection of links to assemblers, editors, compilers and all kinds of useful free (yes, really free!) software.
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Don't know if all the links I've given are for FREE ones or not...\n\nhttp://www.freerecruiting.com/\nhttp://www.assessment-central.com/\nhttp://www.go4recruitingsoftware.com/\nBusinessChambers.com\n\nReviews and comparisions -\n\nwww.Software-Finder.org/Recruiting\nBest3Websites.com\n\nHope it helps !
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http://planetsourcecode.com
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Well, I can't advise you from experience, but I know of a website that has all sorts of resources for programming for free.  The URL below has free compilers, IDEs, tutorials, articles and other programming tools for a lot of different languages and platforms.  Take a look and I'd bet even odds you'll find some things to help you out.  Good Luck!
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http://www.compuware.com/products/devpartner/studio.htm
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Try Download.com and give your product a free trial so people can see if they need or like it.
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http://www.codeproject.com/\n\nis a good start, free sign up
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I find eMule very useful. I've got lots of great stuff downloaded there.\nwww.emule-project.net\n\nIt's totally free and safe
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start with www.freeality.com
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The following sites can help u out:\nwww.codeproject.com\nwww.codeguru.com\nwww.codearchive.com\nwww.codebeach.com
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http://www.freewarefiles.com and also http://www.freewarehome.com\nThese pages also have links to other "free" sites.\nDownload.com and tucows.com also have "freeware" file directories.
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I included links to several sites that you can offer evaluation copies or shareware/freeware versions of your software.