The JumpBox for Ruby on Rails is a self-contained Ubuntu Linux environment that, upon startup, immediately hosts fully functioning Apache, Ruby, MySQL, and Ruby On Rails environments. With only a minimal amount of preparation, you can use your favorite deployment method to install and host your Rails application on the JumpBox.
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.
OpenThinClient is a thin client solution consisting of a Linux-based operating system along with a comprehensive Java-based management GUI and server component. It is intended for environments where a medium to large number of thin clients must be supported and managed efficiently.
UNIXem is a small and simple library that provides emulation of several popular Unix API functions on the Win32 platform. Its primary purpose is to assist Win32 programmers who are porting to Unix or are writing multi-platform code. API functions include opendir/readdir/closedir, glob/globfree, readv/writev, pathconf/realpath, mmap/munmap/msync, dlopen/dlclose/dlsym/dlerror, gettimeofday, and getpagesize.
MikeOS is an operating system for x86 PCs, written in assembly language. It is a learning tool to show how simple OSes work, with well-commented code and extensive documentation. It features a text-mode dialog-driven user interface, a file manager and machine code monitor, and over 60 system calls for use by third-party programs.