It is available free of charge for both macOS and Windows operating systems.
Software development kits (SDK) for QuickTime are available to the public with an Apple Developer Connection (ADC) subscription. Already, at the time of the Windows version's discontinuation, two such zero-day vulnerabilities (both of which permitted arbitrary code execution) were identified and publicly disclosed by Trend Micro consequently, Trend Micro strongly advised users to uninstall the product from Windows systems. QuickTime for Microsoft Windows is downloadable as a standalone installation, and was bundled with Apple's iTunes prior to iTunes 10.5, but is no longer supported and therefore security vulnerabilities will no longer be patched.
6 Creating software that uses QuickTime.5.9 QuickTime X (QuickTime Player v10.x).
