OKL4 Microkernels are a family of second-generation microkernels based on the original designs and implementations by Jochen Liedtke. Originally implemented in highly tuned i386-specific assembly language code, the API has seen extensive development in a number of directions, both in achieving a higher grade of platform independence and also in improving security, isolation, and robustness. There have been various re-implementations of the original binary kernel interface and its higher level successors, including L4Ka::Pistachio, L4/MIPS, and Fiasco. For this reason, the name L4 now applies to the whole microkernel family including the L4 kernel interface and its different versions.
Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. TurnKey Django is an appliance that just works, with no configuration required. It gets you up and running with Django in minutes on a virtual machine, bare metal or in the cloud. It's designed to be easy to use and easy to maintain. Security patches are automatically installed. It provides a Web management interface, configuration console, and AJAX Web shell. To minimize footprint, the appliance is built from the ground up with the minimum required components. It runs everywhere thanks to multiple build formats, including an installable live CD, a VMDK with OVF support and an Amazon EC2 AMI. It's a part of the TurnKey Linux Virtual Appliance Library.
TurnKey Ruby on Rails Appliance is a server appliance for the Ruby on Rails Web development framework. It is designed to be easy to use and easy to maintain. Security patches are automatically installed. It provides a Web management interface, configuration console, and an AJAX Web shell. To minimize footprint the appliance is built from the ground up with the minimum required components. It runs everywhere thanks to multiple build formats, including an installable live CD, a VMDK with OVF support, and an Amazon EC2 AMI.
The 64 Studio Platform Development Kit (PDK) is a version control system for GNU/Linux distributions, allowing the creation and management of many different projects, based on Debian and Ubuntu sources. PDK is written in Python, and the source code is well commented and contains documented examples.
Cobbler is a network installation and update server. It can be used to automatically set up PXE, install virtual guests, manage answer files, and reinstall existing Linux machines. Advanced features include importing distributions from DVDs and rsync mirrors, kickstart templating, integrated yum mirroring (integrated with the installer to make updates available at install time), creation of netboot ISOs, and built-in DHCP/DNS Management. Tools such as "cobbler triggers", a Python API, and an XMLRPC API allow integration with cobbler with the rest of your datacenter environment or other systems management applications. There is also a Web interface to simplify management of the install server. Cobbler supports RHEL 4+, Fedora, and derivative distributions, and is also able to install other popular distributions.
OpenSDE is a kit for creating customized operating systems based on GNU/Linux. OpenSDE has an easy configuration tool which allows anyone to put together their own GNU/Linux distribution that addresses their specific needs. OpenSDE supports over 2400 software packages and the number is still growing.