Micro Saint Sharp is a general purpose discrete-event simulation and human performance modeling software tool developed by Alion Science and Technology.

Micro Saint Sharp allows users to create discrete-event simulations as visual task networks with logic defined using the C# programming language.

Micro Saint Sharp has been used in the healthcare,[3][4] manufacturing,[5] supply chains,[6] business process re-engineering,[7] workstation design,[8] call centers,[9] transportation,[10] and command and control[11] areas.

[15] SAINT evolved from 1) task analysis and 2) Monte Carlo simulation of operator performance under workload stress as represented by Siegel and Wolf.

Micro Saint Sharp's intuitive graphical user interface and flow chart approach to modeling make it a tool that can be used by generalists as well as simulation experts.

Micro Saint Sharp also includes more low level features such as global variables and subroutines called Functions.

Events are occurrences that happen in an instant of simulated time within Micro Saint Sharp that can change the global state of the system.

Micro Saint Sharp provides the public global variable Clock which tracks the simulation's current time.

Micro Saint Sharp allows the modeler to create custom global variables which can be accessed and modified in any task node.

Micro Saint Sharp also allows user to view individual pieces of a model with the use of dynamic real-time charting.

OptTek's OptQuest optimization software is included in the Gold version of Micro Saint Sharp.

Users can directly choose the variables that will have an effect on the Micro Saint Sharp model results.

The console protocol allows Micro Saint Sharp to interact with command line applications.

The Excel protocol connects to a Microsoft Excel® spreadsheet and allows the modeler the capability to do basic reading and writing of cells in workbooks.