Easy Stack Calculator is a simple console-based calculator that uses a stack internally to process the equations typed into the interface. It does not provide a graphical user interface but compiles on all valid C++ compilers. There are binaries available for Win32, Linux, IRIX, OpenVMS, and *BSD.
Fype is For Your Program Execution, an attempt to build an open source scripting language from scratch (just for fun) using C99 on FreeBSD. The focus is to use as few dependencies on 3rd party libraries as possible, to use as little code as possible, and to have a very small execution binary. It should be portable to many different operating systems.
HTTP Bench is a small program to benchmark HTTP servers. This is the current feature set: iterating over a list of URLs; measuring response times and calculating min, max, and average values; measuring TCP/HTTP errors; multi-threaded operation for concurrent connections (using pthreads); setting an upper limit of requests per second; and validation of response strings. The source code is very simple.
Loadbars is a small script that can be used to observe CPU loads of several remote servers at once in real time. It connects with SSH (using SSH public/private key auth) to several servers at once and vizualizes all server CPUs and memory statistics right next each other (either summarized or each core separately). Loadbars is not a tool for collecting CPU loads and drawing graphs for later analysis. However, since such tools require a significant amount of time before producing results, Loadbars lets you observe the current state immediately. Loadbars does not remember or record any load information. It just shows the current CPU usages like top or vmstat does.
NetCalendar is a network capable calendar application. NetCalendar has a server and a client part which communicate over a TCP/IP network. It also supports secure sockets using SSL. NetCalendar can also be used as a stand-alone application. NetCalendar does not use an SQL database but rather the database of the classic Unix "calendar" program.
PerlDaemon is a minimal Unix daemon framework. It can be programmed in Perl to perform any task. It supports automatic daemonizing, logging and logrotate support, clean shutdown, and PID files (including a check on startup). It's easy to configure and easy to extend by customizing the daemonloop subroutine.
pwgrep is a simple password manager that manages a database file using encryption of GnuPG. It uses encryption and version control on all of the passwords that are stored. The password database can be used on several hosts at once with automatic synchronization. Even several users can share the same password database. The versioning system will keep track of who was changing which entries and at which time. The versioning system to use can be configured (and is Subversion by default). Besides passwords, pwgrep can also be used for storing a collection of files like certificates. The file shredding command for secure deleting of temporary files can be configured. A local backup of all database changes is automatically made. It can be used without a GUI (such as through an SSH session).
VS-Sim is a simulator for distributed systems. It stands for "Verteilte Systeme Simulator", which is the German translation for "Distributed Sytstems Simulator". The project was a diploma thesis at the Aachen University of Applied Sciences, and can simulate various scenarios of the distributed systems lecture at the university.