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<h2 id="open-source-availability">Open source availability</h2> <p><a href="/facts/Apple_Inc./oTJYta3k">Apple</a> used to release most of CF as an <a href="/facts/Open-source_software/HzTaB8E9">open-source</a> project called CFLite that can be used to write cross-platform applications for macOS, <a href="/facts/Linux/9FvCKSTq">Linux</a>, and <a href="/facts/Microsoft_Windows/bwhAhuSL">Windows</a>.<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> </p><p>A third-party open-source implementation called OpenCFLite extends the Apple CFLite for building on 32-bit <a href="/facts/Microsoft_Windows/bwhAhuSL">Windows</a> and <a href="/facts/Linux/9FvCKSTq">Linux</a> environments. It is maintained by one of the <a href="/facts/WebKit/YrP9vbIj">WebKit</a> developers, but was stalled by 2015.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> The karaoke platform KJams maintains a fork since 2017. This version, by its programmer David M. Cotter, supports 64-bit systems and has a CFNetwork implementation with <a href="/facts/LibreSSL/9UnXD0lm">LibreSSL</a>-based TLS.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> A fork of OpenCFLite was created by Grant Erickson (an original collaborator with Brent Fulgham on the SourceForge version) in 2021<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> with a companion port of the CFHost portion of CFNetwork, as OpenCFNetwork.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p><p>The Swift Corelib Foundation, a fallback version of the <a href="/facts/Foundation_Kit/LcnWzx5R">Foundation Kit</a> for the Swift programming language for non-Apple platforms, contains a near-full version of the Core Foundation released under <a href="/facts/Apache_License_2.0/5AeIjas8">Apache License 2.0</a>.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> </p><p><a href="/facts/GNUstep/LaIT4jYx">GNUstep</a> includes a version of the Core Foundation called "libs-corebase".<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/GLib/s3a6avhy">GLib</a> – the <a href="/facts/GNOME_Project/DATrJNtU">GNOME Project</a> equivalent</li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="https://developer.apple.com/library/mac/documentation/CoreFoundation/Reference/CoreFoundation_Collection/index.html#//apple_ref/doc/uid/TP40003849">Core Foundation reference</a> at <a href="/facts/Apple_Developer/mHaKzeRs">Apple Developer</a></li> <li><a href="https://sourceforge.net/projects/opencflite/">OpenCFLite</a> at SourceForge</li> <li><a href="https://karaoke.kjams.com/wiki/CFLite">CFLite including CFNetwork</a> works in 64bit, uses LibreSSL (TLS 1.1, 1.2)</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>ridiculous_fish (2006). "Bridge". <a href="https://ridiculousfish.com/blog/posts/bridge.html" target="_blank">https://ridiculousfish.com/blog/posts/bridge.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"Plug-ins and Microsoft's COM". Mac Developer Library. Apple Inc. Archived from the original on September 1, 2014. Retrieved March 25, 2015. <a href="https://web.archive.org/web/20140901084753/https://developer.apple.com/library/mac/documentation/CoreFoundation/Conceptual/CFPlugIns/Concepts/com.html" target="_blank">https://web.archive.org/web/20140901084753/https://developer.apple.com/library/mac/documentation/CoreFoundation/Conceptual/CFPlugIns/Concepts/com.html</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"Source Browser". <a href="http://opensource.apple.com/source/CF/" target="_blank">http://opensource.apple.com/source/CF/</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>OpenCFLite project on SourceForge. <a href="http://sourceforge.net/projects/opencflite/" target="_blank">http://sourceforge.net/projects/opencflite/</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>"CFLite". KJams. Retrieved February 19, 2020. <a href="https://karaoke.kjams.com/wiki/CFLite" target="_blank">https://karaoke.kjams.com/wiki/CFLite</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>"OpenCFLite project on GitHub". GitHub. Retrieved November 30, 2021. <a href="https://github.com/gerickson/opencflite/" target="_blank">https://github.com/gerickson/opencflite/</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>"OpenCFNetwork project on GitHub". GitHub. Retrieved November 30, 2021. <a href="https://github.com/gerickson/opencfnetwork/" target="_blank">https://github.com/gerickson/opencfnetwork/</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>"swift-corelibs-foundation". GitHub. October 14, 2021. <a href="https://github.com/apple/swift-corelibs-foundation" target="_blank">https://github.com/apple/swift-corelibs-foundation</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>"gnustep/libs-corebase: The GNUstep CoreBase Library is a library of general-purpose, non-graphical C objects". GitHub. GNUstep. November 19, 2019. <a href="https://github.com/gnustep/libs-corebase/" target="_blank">https://github.com/gnustep/libs-corebase/</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> </ol>