advancecomp : Recompress ZIP, PNG and MNG using deflate 7-Zip, considerably improving compression ( http://advancemame.sourceforge.net/comp-readme.html )
afio : makes cpio-format archives and deals somewhat gracefully with input data corruption ( http://members.chello.nl/k.holtman/afio.html )
alien : Converts between the rpm, dpkg, stampede slp, and slackware tgz file formats ( http://kitenet.net/programs/alien )
arc : Create and extract files from DOS .ARC files ( http://arc.sourceforge.net )
arj : Utility for opening arj archives ( http://arj.sourceforge.net )
atool : a script for managing file archives of various types ( http://www.nongnu.org/atool/ )
bloscpack : Command line interface for Blosc compression ( https://github.com/Blosc/bloscpack )
bsdsfv : all-in-one SFV checksum utility ( http://bsdsfv.sourceforge.net/ )
bzip2 : A high-quality data compressor used extensively by Gentoo Linux ( http://www.bzip.org/ )
cabextract : Extracts files from Microsoft cabinet archive files ( http://www.cabextract.org.uk/ )
cfv : Utility to test and create .sfv, .csv, .crc and md5sum files ( http://cfv.sourceforge.net/ )
cksfv : SFV checksum utility (simple file verification) ( http://zakalwe.fi/~shd/foss/cksfv/ )
cpio : A file archival tool which can also read and write tar files ( https://www.gnu.org/software/cpio/cpio.html )
createrepo : Creates a common rpm-metadata repository ( http://createrepo.baseurl.org/ )
deb2targz : Convert a .deb file to a .tar.gz archive ( http://www.miketaylor.org.uk/tech/deb/ )
defluff : deflate huffman optimizer ( http://j-o.users.sourceforge.net )
deltarpm : tools to create and apply deltarpms ( http://gitorious.org/deltarpm/deltarpm )
dpkg : Package maintenance system for Debian ( http://packages.qa.debian.org/dpkg )
duff : Command-line utility for quickly finding duplicates in a given set of files ( http://duff.sourceforge.net/ )
dump : Dump/restore ext2fs backup utilities ( http://dump.sourceforge.net/ )
engrampa : Engrampa archive manager for MATE ( http://mate-desktop.org )
fastjar : A jar program written in C ( https://savannah.nongnu.org/projects/fastjar )
file-roller : Archive manager for GNOME ( http://fileroller.sourceforge.net/ https://wiki.gnome.org/Apps/FileRoller" particular archive format support, see ${HOMEPAGE )
freeze : Freeze/unfreeze compression program ( http://www.ibiblio.org/pub/Linux/utils/compress/ )
funzix : unpacker for the bogus ZIX format ( http://funzix.sourceforge.net/ )
gcab : Library and tool for working with Microsoft Cabinet (CAB) files ( https://wiki.gnome.org/msitools )
gtk-splitter : Split files into smaller pieces and combine them back together ( http://gtk-splitter.sourceforge.net )
gzip : Standard GNU compressor ( http://www.gnu.org/software/gzip/ )
hardlink : A tool which replaces copies of a file with hardlinks ( http://jak-linux.org/projects/hardlink/ )
innoextract : A tool to unpack installers created by Inno Setup ( http://constexpr.org/innoextract/ )
ipkg-utils : Tools for working with the ipkg binary package format ( http://www.openembedded.org/ )
lbzip2 : Parallel bzip2 utility ( https://github.com/kjn/lbzip2/ )
lha : Utility for creating and opening lzh archives ( http://lha.sourceforge.jp )
libarchive : BSD tar command ( http://www.libarchive.org/ )
libpar2 : A library for par2, extracted from par2cmdline ( https://launchpad.net/libpar2/ )
libzpaq : Library to compress files in the ZPAQ format ( http://mattmahoney.net/dc/zpaq.html )
lrzip : Long Range ZIP or Lzma RZIP optimized for compressing large files ( http://ck.kolivas.org/apps/lrzip/README )
lzip : lossless data compressor based on the LZMA algorithm ( http://www.nongnu.org/lzip/lzip.html )
lziprecover : Lziprecover is a data recovery tool and decompressor for files in the lzip compressed data format ( http://www.nongnu.org/lzip/lziprecover.html )
lzlib : Library for lzip compression ( http://www.nongnu.org/lzip/lzlib.html )
lzop : Utility for fast (even real-time) compression/decompression ( http://www.lzop.org/ )
makeself : shell script that generates a self-extractible tar.gz ( http://www.megastep.org/makeself/ )
mscompress : Microsoft compress.exe/expand.exe compatible (de)compressor ( http://gnuwin32.sourceforge.net/packages/mscompress.htm )
mt-st : control magnetic tape drive operation ( http://www.ibiblio.org/pub/linux/system/backup/ )
ncompress : Another uncompressor for compatibility ( https://github.com/vapier/ncompress )
p7zip : Port of 7-Zip archiver for Unix ( http://p7zip.sourceforge.net/ )
par2cmdline : A PAR-2.0 file verification and repair tool ( https://github.com/BlackIkeEagle/par2cmdline )
pax : pax (Portable Archive eXchange) is the POSIX standard archive tool ( http://www.openbsd.org/cgi-bin/cvsweb/src/bin/pax/ )
pbzip2 : Parallel bzip2 (de)compressor using libbz2 ( http://compression.ca/pbzip2/ https://launchpad.net/pbzip2 )
pdlzip : Public-domain version of lzip compressor ( http://www.nongnu.org/lzip/pdlzip.html )
pdv : build a self-extracting and self-installing binary package ( http://sourceforge.net/projects/pdv )
pet2tgz : Puppy Linux .pet to .tar.gz converter ( http://sourceforge.net/projects/pet2tgz/ )
pigz : A parallel implementation of gzip ( http://www.zlib.net/pigz/ )
ppmd : PPM based compressor -- better behaved than bzip2 ( http://packages.qa.debian.org/p/ppmd.html )
pure-sfv : utility to test and create .sfv files and create .par files ( http://pure-sfv.sourceforge.net/ )
pxz : parallel LZMA compressor (no parallel decompression!) ( http://jnovy.fedorapeople.org/pxz/ )
rpm : Red Hat Package Management Utils ( http://www.rpm.org )
rpm2targz : Convert a .rpm file to a .tar.gz archive ( http://www.slackware.com/config/packages.php )
rzip : Compression program for large files ( http://rzip.samba.org )
sharutils : Tools to deal with shar archives ( https://www.gnu.org/software/sharutils/ )
snappy : A high-speed compression/decompression library by Google ( https://github.com/google/snappy )
star : An enhanced (world's fastest) tar, as well as enhanced mt/rmt ( http://s-tar.sourceforge.net/ )
stuffit : Aladdin Software's StuffIt and StuffIt Expander ( http://www.stuffit.com/ )
tapeutils : Utilities for manipulation of tapes and tape image files ( http://www.brouhaha.com/~eric/software/tapeutils/ )
tar : Use this to make tarballs :) ( https://www.gnu.org/software/tar/ )
tardelta : Generate a tarball of differences between two tarballs ( https://github.com/zmedico/tardelta )
tardy : A tar post-processor ( http://tardy.sourceforge.net/ )
tarsync : Delta compression suite for using/generating binary patches ( https://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/app-arch/tarsync/tarsync-0.2.1-r1.ebuild?view=markup )
threadzip : threaded compressor logic for zlib/lzma ( https://code.google.com/p/threadzip/ )
torrentzip : Archiver that creates standard zips to create identical files over multiple systems ( https://sourceforge.net/projects/trrntzip )
unadf : Extract files from Amiga adf disk images ( http://lclevy.free.fr/adflib/ )
unar : unpacker for various archiving formats, e.g. rar v3 ( http://unarchiver.c3.cx/ )
unarj : Utility for opening arj archives ( http://www.arjsoftware.com/ )
undms : Decompress Amiga DMS disk images to ADF ( ftp://us.aminet.net/pub/aminet/misc/unix/ )
unlzx : Unarchiver for Amiga LZX archives ( ftp://us.aminet.net/pub/aminet/misc/unix/unlzx.c.gz.readme )
unmakeself : Makeself archive extractor ( http://www.freshports.org/archivers/unmakeself )
unp : Script for unpacking various file formats ( http://packages.qa.debian.org/u/unp.html )
unrar : Uncompress rar files ( http://www.rarlab.com/rar_add.htm )
unrar-gpl : Free rar unpacker for old (pre v3) rar files ( http://home.gna.org/unrar/ )
unrpa : Ren'Py's RPA data file extractor ( https://github.com/Lattyware/unrpa )
unshield : InstallShield CAB file extractor ( https://github.com/twogood/unshield http://sourceforge.net/projects/synce/ )
unzip : unzipper for pkzip-compressed files ( http://www.info-zip.org/ )
upx-bin : Ultimate Packer for eXecutables (binary version with proprietary NRV compression) ( http://upx.sourceforge.net/ )
upx-ucl : Ultimate Packer for eXecutables (free version using UCL compression and not NRV) ( http://upx.sourceforge.net/ )
vimball : a command-line vimball archive extractor ( https://github.com/radhermit/vimball )
xar : An easily extensible archive format ( https://code.google.com/p/xar )
xarchiver : a GTK+ based and advanced archive manager that can be used with Thunar ( http://xarchiver.sourceforge.net/ )
xdms : xDMS - Amiga DMS disk image decompressor ( http://zakalwe.fi/~shd/foss/xdms )
xz-utils : utils for managing LZMA compressed files ( http://tukaani.org/xz/ )
zip : Info ZIP (encryption support) ( http://www.info-zip.org/ )
zoo : Manipulate archives of files in compressed form ( ftp://ftp.kiarchive.ru/pub/unix/arcers )
zopfli : Compression library programmed in C to perform very good, but slow, deflate or zlib compression ( https://github.com/Hello71/zopfli/ )
zpaq : Journaling incremental deduplicating archiving compressor ( http://mattmahoney.net/dc/zpaq.html )
zpaq-extras : A set of additional compression profiles for app-arch/zpaq ( http://mattmahoney.net/dc/zpaq.html )
zpipe : Pipe compressor/decompressor for ZPAQ ( http://mattmahoney.net/dc/zpaq.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a funtoo
For Paludis use this rsync : rsync://gentoo.zugaina.org/funtoo-portage
If you have a problem : ycarus(-at-)zugaina.org