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Designed byMax Reason[1]
DevelopersMax Reason, Eddie Penninkhof[2]
First appearedlate 1980s
Stable release
6.2.3 / 2002; 18 years ago (2002)
Preview release
6.3.22 / 2014; 6 years ago (2014)
OSWindows, Linux
Filename extensionsx
Influenced by
BASIC, C (programming language)

XBasic is a variant of the BASIC programming language that was developed in the late 1980s for the Motorola 88000 CPU and Unix by Max Reason. In the early 1990s it was ported to Windows and Linux, and since 1999 it has been available as open source software with its runtime library under the LGPL license.

It should not be confused with TI Extended BASIC, which is sometimes called XBasic or X Basic. Xbasic should also not be confused with the Xbasic language used in Alpha Software's Alpha Anywhere and Alpha Five products. Alpha Software has developed Xbasic as a proprietary language for its products. Alpha Software's Xbasic is not connected in any way at all to the version of Xbasic described in this article.

Max Reason discontinued his support, and development since has been overseen by Eddie Penninkhof.

Version 6.2.3 was the last official release, released on 27 October 2002.


XBasic has signed and unsigned 8-, 16- and 32-bit and signed 64-bit integers as well as 32- and 64-bit floating point values. The string data type is only for 8-bit characters.

It is possible to generate an assembly language file. XBasic has a Windows only version called XBLite. Development is at SourceForge.


  • Editor (writing source code)
  • Compiler (creating machine code)
  • Debugger (checking for errors)
  • Libraries (ready made code to call on)
  • GuiDesigner (creates the graphical user interface for the program)

Example code[edit]

 ' Programs contain:
 ' 1. A PROLOG with type/function/constant declarations.
 ' 2. This Entry() function where execution begins.
 ' 3. Zero or more additional functions.

 PRINT "Hello World"

 PRINT 2+2
 PRINT 44/12
 PRINT 33*3



External links[edit]