OpenBSD is a fork of NetBSD which focuses on security.
The 32-bit OpenBSD x86 system has 64-bit dates and is immune from the
year 2038 problem (y2k38).
OpenBSD also supports software projects such as
OpenSMTPD a replacement for Sendmail
Here are Archives of portable versions for Linux and other systems
There is a git of the current development portable version.
OPNsense is a FreeBSD firewall distribution that is a
fork of the now defunct
M0n0wall distribution
PureDarwin is an open source version of Apple's macOS (OS 10)
True OS is defunct.
It was a desktop version of FreeBSD that used the ZFS filesystem and replaced
the now defunct PC-BSD distribution
Clamav is an anti-virus program for Unix and the
Clamwin program is for Microsoft Windows.
For a stand alone bootable CD there is Brandon Parry's
ClamAV Live CD
Clonezilla will clone/copy/backup disk partitions.
Coherent
is a UNIX lookalike operating system for 286/386/486 systems from now defunct Mark Williams Company.
In 2015 the MWC sources were posted under a open source license, so everyone is free to use the system.
With 1400+ pages, the Coherent Manual is one of the best computer manuals ever written.
cURL
is a program to let you "see" a URL, including ftp.
FreeDOS includes all the standard tools, fdisk, format, etc.
FDOS has different versions of FreeDOS floppy diskette images.
Christian Taube has
bootable USB images
Fcron is a periodocal command scheduler that can replace
Vixie Cron and Anacron.
FFmpeg is a very fast video and audio converter. It includes FFserver which is a streaming server that can stream audio/video over the web to Windows Media and RealPlayer clients.
Firefox is a Web Browser from Mozilla.org
that features tabbed windows and pop-up blockers.
For beta versions/nighly builds of Mozilla software see
ftp.mozilla.org/pub/mozilla.org/firefox For a very stable version used by businesses and large organizations see
Firefox Extended Support Release (ESR)
GNU IceCat (aka Gnuzilla or IceWeasel ) is the GNU version of the Firefox web browser.
Xen is a hypervisor that can run multiple copies of an operating system
all at the same time.
Xen supports Linux, FreeBSD, OpenBSD and others as guest operating systems.
Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format.
illumos continues the work of OpenSolaris which is dead.
ImageMagick is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (over 100) including DPX, EXR, GIF, JPEG, JPEG-2000, PDF, PhotoCD, PNG, Postscript, SVG, and TIFF. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.
Java is a widely used object oriented language now owned by Oracle.
Java API documentation I re-wrote a Java Clock applet to make the hands go counter clockwise in honor of
Grace Hopper, one of the earliest computer programmers:
Hopper.html Hopper.java
LibreOffice
a replacement to the Microsoft office suite competes with
OpenOffice which is now owned by Oracle.
Lighttpd is a fast compliant web server released with a BSD license
Links a Text/Graphical Web Browser supports tables and frames
Slackpkg is a convenient way of upgrading. Change the "mirror" file and one can upgrade for the latest security fixes or upgrade to "current" for the bleeding edge of new software.
Here is a reasonable way of running slackpkg:
slackpkg update
slackpkg update gpg
slackpkg install-new
slackpkg upgrade-all
slackpkg clean-system
Slackpkg+
is an add on to Slackpkg which allows for multiple repositories.
Slackrepo is a Slackware package manager that
handles dependencies
SlackBuilds.org lets you build your own packages from source
Willy Sudiarto Raharjo created
SboPkg as a way of automating builds using Slackbuilds.org
The corporate Linux Foundation owns Kernel.org
which has Linux Kernels and
mirrors of several Linux distributions.
vger.kernel.org kernel developer mailing lists
lore.kernel.org mailing list archives
Github hosts Linux Torvalds
Linux kernel.
Here are the
Kernel Downloads available.
(kernel.org was down and being fixed/restored from the hack of August 2011...)
Syslinux Project includes:
SYSLINUX for booting Linux from MS-DOS FAT filesystems
ISOLINUX for booting Linux from cdroms or other ISO9660 filesystems
PXELINUX for booting Linux from a network tftpd server
EXTLINUX for booting Linux from ext2/ext3 filesystems
Partimage is disk partition backup/restore software
used by SysRescCD and others.
PDCurses is a public domain curses
library for DOS, OS/2, Windows console, X11 and SDL, implementing most of the functions
available in X/Open and System V R4 curses
Ruby an Object Oriented scripting language
copies much from Perl.
SeaMonkey is an all-in-one Web Browser, email client, IRC chat, ... application from Mozilla.org and is the direct descendant of the old Netscape Browser
slrn
is a nice nntp newsreader originally written by John E. Davis, the author of the
jed editor.
D. J. Bernstein
reports insightfully and critically about problems with Unix and the internet.
He wrote replacements
for sendmail (qmail)
and bind (djbdns).
And has a page on Y2K and other time bombs
including the year 2036 problem with NTP and the year 2038 (Y2K38) problem with Unix and Standard C.
Software