What's new

Jep 3.5 releases | Aug. 2018
After a long wait the next release of Jep is now out. This adds internationalization support and improved multi-thread evaluation.

Jep Extension 2.0 releases | Aug. 2018
Along with Jep 3.5 an extensions package is also released. This adds symbolic operations, structured programming constructs, and a type system with rational number and matrices.

GWT Jep| Aug. 2018
The next upcoming release will be GWTJep a version of Jep cross compiled to javascript using Google GWT framework.

Jep 3.4 releases | Nov. 2010
The last few months have seen two new releases of Jep Java (now at 3.4) and Jep.Net (now at 1.1). Check out the product pages for more details on the changes.

Jep.Net 1.0 Release | Jun. 2009
We are proud to announce the release of Jep.Net v1.0! This is a careful, hand-crafted port of the 3.2 version of Jep to the .Net framework. This product represents a perfect meld of .Net innovations and years of development and refinement of the original Jep parser and evaluator.

For more information and a trial download visit the Jep.Net page.

Jep 3.3 Release | Nov. 2008
The newest Jep release of is now available for download! We have drastically improved evaluation speeds for real-number calculations, added additional functions and enhanced the operator table functionality.

Jep 3.2 Release | Feb. 2008
A new release of Jep is now available! We made a bunch of improvements to the configurable parser component, making it even more powerful than before. Additionally you can now analyse parsed expressions, parse multiple expressions separated by semi-colons, and much more.

Jep Java

Java Math Expression Parser

Jep Java is a library for parsing and evaluating mathematical expressions. With this API you can allow your users to enter an arbitrary formula as a string, and instantly evaluate it.

With over 500 downloads per month, the number of Jep users is rapidly growing. Have a look at the Jep example applets as well as AutoAbacus, to see Jep in action!

Jep Extensions

Jep addons

Jep Extensions is a set of extensions to jep providing: differentiation and symbolic operations; a type system with matrices, rational numbers, and custom types; very fast evaluation for pre-compiled expressions; limited structured programming with for and while loops; statistical functions and distributions.

Jep.Net

Math Expression Parser for .Net

Just like Jep Java, Jep.Net is a library for parsing and evaluating mathematical expressions except as a .Net component.

Be sure to check out the trial version which includes a number of excellent demonstrations of how this library could be put to use in your next project. You will be impressed with the extendible architecture, ease-of-use, and speed of Jep.Net.

GWTJep

Jep for javascript

A version of Jep for use with javascript GWTJep is a cross-compiled using Googles Google Web Toolkit.

AutoAbacus

Equation solving library

AutoAbacus is a powerful equation solving library that finds solutions to equation sets with a snap. Equations are passed to AutoAbacus as text, while the program attempts to find a solution that satisfies all constraints.