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ACE (compression file format)

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ACE (compression file format)

ACE
Filename extension .ace
Internet media type application/x-ace-compressed
Developed by e-merge GmbH
Type of format data compression

In computing, ACE is a proprietary data compression archive file format developed by Marcel Lemke, and later bought by e-merge GmbH. The peak of its popularity was 1999–2001, when it provided slightly better compression rates than RAR, which has since become more popular.

Contents

  • WinAce 1
  • Third-party support 2
  • See also 3
  • References 4
  • External links 5

WinAce

WinAce, maintained by e-merge GmbH, is used to compress and decompress ACE files under Microsoft Windows. When installed, it lets the user choose between paying for a registration or installing WhenU adware. e-merge GmbH also produces a Commandline ACE for DOS; and a freeware command-line decompression tool for Linux (i386) and Mac OS X called "Unace". e-merge GmbH also provides several libraries for developers, including a freeware decompression DLL called "UnACE.DLL". Some third-party archivers can read the format using this DLL. None of the above is open source free software.

An older version of an Unace 1.2b is free software and licensed under the GPL by the author Marcel Lemke, but it cannot extract ACE archives from version 2.0 and newer.[1]

On November 23, 2007, version 2.69 of WinACE was released, including a less intrusive adware application, MeMedia AdVantage, which replaces WhenU. No other major changes are in this release.

Third-party support

Packing of ACE files is licensed as proprietary information and only available through WinACE, while Unpacking of ACE files is supported by a number of third-party archivers. However, virtually all of them (the ones that support ACE 2.x format) do this by using the proprietary "Unace.dll" from e-merge GmbH.

See also

References

  1. ^ http://packages.debian.org/stable/utils/unace

External links

  • WinAce website
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