libs/headers: http://www.microsoft.com/msdownload/platformsdk/sdkupdate/
nmake:
http://www.microsoft.com/downloads/details.aspx?FamilyID=9b3a2ca6-3647-4070-9f41
-a333c6b9181d&displaylang=en
cl:
http://www.microsoft.com/downloads/details.aspx?FamilyId=272BE09D-40BB-49FD-9CB0
-4BFA122FA91B&displaylang=en

Signature
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> Where can I download the core Win32 libraries/headers so that I can write
> Win32 apps without using Visual Studio? Also, where can I download nmake
> and cl (if they're free for personal use)? Thanks in advance.