PEDSIM is a microscopic pedestrian crowd simulation system. The PEDSIM library allows you to use pedestrian dynamics in your own software. Based on pure C++/STL without additional packages, it runs virtually on every operating system. The PEDSIM Demo Application gives you a quick overview of the capabilities, and is a starting point for your own experiments. PEDSIM is suitable for use in crowd simulations (e.g. indoor evacuation simulation, large scale outdoor simulations), where one is interested in output like pedestrian density or evacuation time. Since the quality of the individual agent's trajectory is high, PEDSIM can be used for creating massive pedestrian crowds in movies.
Sawdog (Simple Active Watch-DOG) is a suite of scripts that informs the system operators of mission critical servers in the case of a failure. A set of small executables (i.e. expect scripts) are executed, and if one executable fails, it sends an email or an SMS to the sysop. There are 3 states known to sawdog: alive, unknown, and dead. Only certain state transitions trigger a notification. On a Web interface, the states of all hosts are visible. So far, there are scripts to check for DNS, FTP, HTTP, HTTPS, ICMP, IMAP, MS SQL, MySQL, Notes, NTP, POP3, PostgreSQL, SMB, SMTP, SNMP, SSH, telnet, TWS, VNM, and Webmin.