FastCopy

FastCopy computer software is a file and directory copier that runs under Microsoft Windows. 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". In version 5.0.0, it changed the license for a newly added Pro version with addition features, and separated the use case in non-domestic environments, while previous versions allow using FastCopy in workplace.[1]

There are 32- and 64-bit versions, which run under Windows 7 and later, and Windows Server 2012 and later. The total size of the executable and DLL files comprising 64-bit version 4.1.7 is 1.3MB.[3] 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.[1]

In a test conducted in 2008 by lifehacker, Fastcopy was several times faster than its rival Teracopy,[4] a program with similar functionality. However, both programs have been updated since then. 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.[5]

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.[6] 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 2015 FastCopyV2.11 (BSD License) was ported to Mac OS X by Japanese PostProduction L'espace Vision. It is sold on the Mac App Store as "RapidCopy". In 2016 L'espace Vision released the Linux version of "RapidCopy for Linux" on GitHub under a BSD 2-Clause license.