ZThread is an advanced object-oriented threading and synchronization library, implemented in C++ for POSIX, MacOS, and Win32 systems. It provides an excellent and powerful abstraction from native threads. It includes interruptible thread objects and several other synchronization control objects.
The purpose of zdisk is to have a kernel of your choice and a rescue system on one floppy or cdrom disk. Zdisk copies a kernel of your choice to a floppy and puts a rescue system on the same floppy, creating a boot/rescue floppy. The kernel can't be more than 1070Kb in size. Ramf-117.exe at the same site has a similar rescue system, except it comes with a IDE kernel.
Zenwalk Linux is a Linux distribution that focuses on Internet applications, multimedia, and coding tools. It's a complete system, meaning that, out of the box, you will be able to browse the Web, email, chat, listen to music, program in C, Perl, Python, Ruby, etc., watch videos in various formats, write documents, print, scan, burn CDs and DVDs, connect your camera, and edit your photographs, all without adding anything. It aims to be simple and fast, and to provide one application for one task.
ZeroShell is a Linux distribution with Web administration aimed at providing the main network services a LAN requires: Kerberos and x.509 authentication, LDAP and RADIUS authorization, routing, bridging, VLAN 802.1q management, VPN LAN-to-LAN and host-to-LAN, support for authenticated WI-FI access with WPA and WPA2, DNS and DHCP servers, and Captive Portal to access the network using Web login (Internet hotspot). The distribution is now available in the form of a LiveCD or Compact Flash image for embedded network devices. The image size is 103 MB. The distribution is produced directly from the source code of any installed packages.
ZipSpeak is a talking mini-distribution of Linux for blind and visually impaired people, based on version 7.0 of the Slackware distribution and version 0.08 of the Speakup screen reader. Like ZipSlack, ZipSpeak is designed to be installed on an existing MS-DOS or Windows system, so that the user can try out a talking Linux system with a minimum of difficulty, and without assistance from someone who can see.
The Public IP ZoneCD has been created to help implement safe, free, wifi hotspots. NoCat dynamic firewall rules are used for user access and authentication. A transparent proxy sends all "Public" requests from NoCat through a content filter (Dansguardian) to block porn, hacker sites, extreme violence, illegal drugs, and other obscene and explicit Web sites. The content filter also blocks files extensions to protect your network from viruses, and restricts file sizes to save bandwidth.
The Zumastor Linux storage project adds enterprise storage features to Linux, primarily improved snapshots and remote replication. Point-in-time, near zero-cost, block level snapshots can be added to any existing filesystem and performance does not degrade with multiple snapshots. Remote replication is achieved by sending minimal block level deltas between snapshots without having to traverse the entire filesystem like rsync does.
alcolix is a minimal Linux rescue distribution with the goals of being small, compatible, and very usable. It has a cozy shell and a multitude of partition rescue/editing tools, all based on up-to-date releases (e.g., 2.4.x kernel with USB support). It uses cpio.bz2 data disks and has a full GRUB bootloader, memtest86, and more.