In 2015 FastCopyV2.11 ( BSD License) was ported to Mac OS X by Japanese PostProduction L'espace Vision. FastCopy does not use Microsoft's API and places its own calls to the NT kernel, allowing operations with path names longer than 260 characters.

In Microsoft Windows prior to Windows 10 v1607, programs that use the Win32 API, such as Windows Explorer, do not support path names longer than 260 UTF-16 characters later versions of Windows allow this to be changed via the registry or group policy. A more extensive comparison was performed between TeraCopy v2.07beta, KillCopy v2.85, FastCopy v1.99r4, SuperCopier v2.2bet and published on a forum in 2009. However, both programs have been updated since then. In a test conducted in 2008 by lifehacker, Fastcopy was several times faster than its rival Teracopy, a program with similar functionality. It can run as a free-standing portable application or be integrated into the Windows shell, and claims to achieve reading and writing performance close to the device limit. The total size of the executable and DLL files comprising 64-bit version 4.1.7 is 1.3MB. There are 32- and 64-bit versions, which run under Windows 7 and later, and Windows Server 2012 and later. It was originally open-source, under the GPLv3 license, but later freeware releases reported 'Due to various circumstances, distribution of the source code is temporarily suspended'. Windows 7 and later Windows Server 2012 and later įastCopy computer software is a file and directory copier that runs under Microsoft Windows.

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