Basic

Interpreter

 * BBC Basic - Discontinued but supplied for free with the Windows version of the product.
 * Bywater Basic - Open source
 * Canon Basic - Discontinued - A scripting variant of this language is still used for embedded programming by Canon.
 * GW-BASIC - developed by Microsoft for DOS OEM
 * IBM PC BASIC - developed by Microsoft for IBM PC
 * Mallard BASIC PC - developed by Locomotive Software Ltd.
 * MICRO-BASIC - developed by Dave Dunfield
 * Napoleon Brandy Basic - Open Source
 * PBASIC - Discontinued - Aka Digital Research Personal Basic or Metacomco Basic - compatible with CP/M MBASIC
 * QBasic - introduced with MS-DOS 5, also included in OS/2 2.0 and later versions.

Compiler

 * ApBasic - Shareware
 * ASIC - Shareware
 * Better Basic - Commercial
 * CBasic - Discontinued - First Symantec product - Distributed by DRI
 * FranzBasic
 * FreeBasic - Open Source GPL
 * GFA Basic - Free Download
 * Microsoft Basic Professional - Commercial
 * Microsoft QuickBasic - Commercial
 * Microsoft Visual Basic - Version 1 offered DOS support.
 * MTBASIC (Softaid) - Commercial
 * MWBasic - Aka MB86
 * Omni Basic - Commercial
 * PowerBasic - Commercial
 * Sparry Basic - Commercial
 * SuperSoft BASIC Compiler - Commercial
 * Borland Turbo Basic - Commercial
 * True Basic - Commercial - Versions up to 4.01 supported DOS.

DOS text & programmers editors with Basic language support

 * Boxer - "Street Basic", QBasic and Visual Basic support included by default.
 * BRIEF - "Street Basic", QBasic, CBASIC, Turbo Basic and Visual Basic support included by default, although it depends on version.

Win-OS/2 Implementations

 * CA Realizer - Versions 1 to 3 offer Win-OS/2 support.
 * GFA Basic - Discontinued - Free Download - Limited support available from a third party.
 * Liberty BASIC - Discontinued - Last version that works under Win-OS/2 is 2.02
 * Microsoft Basic Professional - Commercial - Cross development from DOS or OS/2 only.
 * Microsoft Visual Basic - Versions 1 to 4 offer Win-OS/2 support.
 * True Basic - Versions up to 5.3 supported Win-OS/2

Java implementations

 * Cocoa
 * HotTEA
 * Instant Basic for Java
 * Jasic

JavaScript implementations

 * qb.js - Partially QBasic compatible, can be run inside a web browser or by using the JavaScript Desktop Enabler.