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11.5 GnuWin32

https://gnuwin32.sourceforge.net/

GnuWin32 provides precompiled native Windows ports of a wide selection of Free software and libraries. Unfortunately, the ports are outdated. Tools available here that are useful for Emacs include:

• Arc - used by archive-mode to edit .arc files.
• Bzip2 - used by Emacs to automatically decompress .bz2 files.
• CompFace - used by gnus to display XFace headers in messages.
• CoreUtils - GNU file, shell and text utilities (also in MSYS)
• DiffUtils - for ediff and producing patches
• FindUtils - for grep-find and other file searches.
• GifLib - library to support GIF images.
• Grep - for searching through files with grep.
• Gzip - used by Emacs to automatically decompress .gz files.
• Jpeg - library to support JPEG images (also in GTK+).
• Lha - used by archive-mode to edit .lzh files.
• LibPng - library to support PNG images (also in GTK+).
• LibTiff - library to support TIFF images (also in GTK+).
• Make - used by compile for building projects (also in MinGW)
• OpenSSL - used by gnus to talk to servers over SSL.
• Patch - used by ediff-patch-file and others to apply patches.
• Tar - used by tar-mode to edit tar files.
• TexInfo - used to build Emacs’s manuals.
• Unzip - used by archive-mode for extracting zip files.
• Xpm - library to support XPM images (bundled with Emacs binaries)
• Zip - used by archive-mode for editing zip files.
• Zlib - required by LibPng (also in GTK+).