Cool Linux CD is a bootable CD that contains a a live Linux distribution based on RedHat 7.3. It also includes the XFS filesystem, devfs, IceWM, QVWM, ROX-filer, OpenOffice.org, Opera, Mozilla, Sylpheed, Pan, Licq, X-chat, GFTP, ppp-redialer, xmms, xine, mplayer, gqview, LinNeighborhood, IPTraffic, VMWare, and more.
SoL-diag is a diskless Linux distribution that was designed for the rescue and analysis of i686 computers. The 36MB image contains over 300 programs, including DVD and MP3 players and CD-RW buring tools. It is also useful for improving your Linux skills and benchmarking computers without having to install programs to the hard drive.
rpm livelinuxcd is a set of ISO images and a toolkit. The first CD image is a basic live CD with X/KDE, GNOME, twm, VPN/DSL, kickstart, and other tools based on RPM packages. The second CD image includes a server with ssh, Apache, PHP, MySQL, Samba, Squid, and more, but without X11. The toolkit consists of shell scripts to create new CDs from RPM package lists or comps files.
PlumpOS is a bootable openMosix node on a CD. Pop the CD into a 486+ computer and you have an instant openMosix node. It supports loading 3rd-party packages and adding custom kernels. It takes up very few resources. It was originally a clone of clump/os, but has evolved into something that doesn't resemble it much anymore.
Rocks is a complete "cluster on a CD" solution for x86 and IA64 Red Hat Linux COTS clusters. Building a Rocks cluster does not require any experience in clustering, yet a cluster architect will find a flexible and programmatic way to redesign the entire software stack just below the surface (appropriately hidden from the majority of users). Although Rocks includes the tools expected from any clustering software stack (PBS, Maui, GM support, Ganglia, etc), it is unique in its simplicity of installation.
Slax is a modern, small, and fast Linux operating system with a modular approach and outstanding design. Despite its small size, which is below 200 megabytes, Slax provides a wide collection of pre-installed software for daily use, including a well organized graphical user interface (KDE4) and useful recovery tools for system administrators. The modular approach gives you the ability to include any other software in Slax easily, by downloading a module with the software, without having to install or configure it.
PLD RescueCD is a bootable disk that contains a live Linux distribution based on PLD Linux x86 and x86-64. It uses transparent xz compression to fit about 180 MB of software onto a single mini CD in a usable form. It can be used to rescue ailing machines, perform intrusion post-mortems, or act as a temporary secure Linux-based workstation. It is possible to boot via PXE and from USB devices.
GeeXboX is a standalone media player Linux distribution, similar to MoviX. It's a small bootable CD that allows you to play your favorite video (DivX, XviD, H.264, MPEG 1/2, VCD, DVD, OggMedia, Windows Media, RealMedia, etc.) and audio (MP3, Audio CD, Ogg Vorbis, FLAC, MPC, etc.) files. It also supports networking, and is able to play media from Windows/Samba share, NFS, UPnP A/V Media Servers, RTP/RTSP servers, or SHOUTcast. It supports TV-out, TV tuners, DVB cards, and WiFi cards. It is based on MPlayer, and can be used on any x86, x86_64, or PowerPC computer. It's easy to modify the source to build your own GeeXboX or use an alternative boot method.