SparkPlug - David Pilling

Equs - Simon Weaver

Simultaneous equation calculator, 79.7K

LinReg - Paul Johnson

A linear regression utility. Requires the WimpBasic runtime module. 30.7K (app), 49.6K (module)

Numeric - Graham Hick

Performs various maths functions (integration, summation etc), 169K

Simpson - Andrew Berry

Performs area under a curve by the Simpson Rule, 15.6K

Unit Conversion - Chris Johnson

Converts various scientific units, 36.7K