musl is a new implementation of the standard library for Linux-based systems. It is lightweight, fast, simple, free, and strives to be correct in the sense of standards-conformance and safety. It includes a wrapper for building programs against musl in place of the system standard library (e.g. glibc), making it possible to immediately evaluate the library and build compact statically linked binaries with it.
CloudLinux is a Linux operating system designed to improve control in the shared hosting and data center arena, while simultaneously increasing control and stability, as well as improving overall performance. It employs kernel level technology called LVE to allow Web hosting companies to control QoS of each individual Web site as well as each section of the Web site. The technology can be used for any multi-tenant environment, where it is beneficial to control resource usage of individual tenant. With CloudLinux, hosting companies can make sure that a single site cannot slow down or take down other Web sites. The OS is interchangeable with CentOS.
FreeNOS is an experimental microkernel operating system for learning purposes. The system is very experimental, yet it currently supports virtual memory, simple task scheduling, and interprocess communication (IPC). It currently contains support for a few devices, including VGA, keyboard, i8250 serial, ATA drives, and PCI controllers. FreeNOS has an experimental implementation of several filesystems, such as the virtual file system, procfs, tmpfs, linnfs, and ext2fs. Current application libraries include libposix, libc, libteken (terminal emulation), and libexec (executable formats). All source code has been documented with Doxygen tags. It has been tested on recent versions of Qemu, VMWare, VirtualBox, Bochs, and bare hardware.
Exolu is a separation of the Linux kernel into two parts: an exokernel and a library. The exokernel consists only of the implementations for basic hardware resource access and drivers, but no abstractions. The library implements the abstractions and interfaces that are used by programs to interact with the kernel.
The sniffy project can trace/log the data of any pseudo terminal in the system. Due to the way the terminal works, such a terminal trace provides complete information of what happened on the terminal screen, and sniffy is able to display/replay this information. It consists of a kernel module able to connect/hook on the pseudo terminal, a program to display the contents of any pseudo terminal on the fly, a daemon process tracing the pseudo terminal content into the file, and a replay program to replay any stored pseudo terminal session.
LPAR2RRD makes historical, future trends and nearly "realtime" CPU utilization graphs of LPARs and shared CPU usage of IBM Power servers. It collects complete physical and logical configuration of all servers/LPARs. It is agent-less (it gets everything from the HMC/SDMC or IVM). It supports all kinds of logical partitions (AIX/AS400/Linux/VIOS).
System and Process Monitor in Java provides a JNI (Java Native Interface) implementation for monitoring global system resources and processes (outside JVM) via a unified (cross-platform) interface. The Java interface and all native libraries are compiled into a single JAR and are loaded transparently on any architecture upon request. It should be easy to embedd this code into your Java applications, either as a separate JAR or as one single application archive.