Algebrus is a sophisticated software for scientific and general purpose calculations. It provides user with numerous mathematical and analysis functions, and allows unlimited extension of its functionality by means of user-developed routines and libraries. Extendibility is based on a built-in simple to learn and yet powerful programming language XPascal. Algebrus can be used both as a simple "evaluate-while-typing" calculator and as a powerful mathematical analysis application, which includes graphic plots of functions and data, command line execution console, and a syntax-highlighted XPascal editor as a part of the integrated development environment. Algebrus has the following major features.

Calculations:
- Vector and matrix operations
- Graphic plots of function and data
- More than 50 built-in mathematical routines
- User-programmed procedures and functions
- Solving of linear algebraic systems
- Solving of ordinary differential equations

User interface:
- Compact and full user interface modes
- Exporting graphics in standard formats
- "Evaluate-while-typing" mode
- Decimal, binary, and hexadecimal integer formats
- Syntax-highlighted XPascal editor
- Syntax-highlighted command console
- Context based help search
- Highly customizable user interface
- Preloading external libraries

XPascal Programming language:
- Native support for vectors and matrices
- User-defined operators
- Complex structured user-defined types
- Chained assignment and relational expressions
- Dynamic and static arrays
- Efficient array access loop statements
- Rich on high level routines for scientific analysis
- Easy to learn simplified yet powerful grammar