Angel is a simple yet useful tool to monitor the services on your network. Technically speaking, it's a Perl program that runs every 'n' minutes (usually fired from your cron) and calls different perl subprograms (referred to as "plugins" from now on) to do the actual testing. It will then generate an HTML table containing the status of your network.
Anacron is a periodic command scheduler. It executes commands at intervals specified in days. Unlike cron, it does not assume that the system is running continuously. It can therefore be used to control the execution of daily, weekly, and monthly jobs (or anything with a period of n days), on systems that don't run 24 hours a day. When installed and configured properly, Anacron will make sure that the commands are run at the specified intervals as closely as machine-uptime permits.
AMMP (another molecular mechanics program) is a full-featured molecular modeling package. Notable features include the use of the fast multipole method for calculations using all pairs of atoms, stiffly stable dynamics, embedding and other strategies for robust building of model structures from limited data.
AML is an implementation of a basic register machine coded in C++. It provides all of the rudimentary features of any machine language like basic I/O and arithmetic but provides a very easy syntax and its own portable binary compression scheme for storing files. AML is currently distributed on SunOS 5.5, Linux 2.2, and Win32 console.