Raisonance RKitL51 Lite Suite for 80C51 (Software Key)

 Other Items from Software Packages for LPC900 (and other 80C51-based microcontrollers)

  Keil PK51- Professional Developer's Suite for 80C51 (e.g. LPC900) - Includes all components of CA51, plus the uVision IDE, Debugger, Simulator, Extended Device Support, LX51 Code Packing Linker, ISD51 In-System Debugger, and RTX51Tiny RTOS
  PKLPC-8K - 8KB Extension to 4KB LPC900 Development Studio - Upgrades the 4KB-limited LPC900 Development Studio to 8KB of code
  Raisonance RKitL51 Lite Suite for 80C51 (+ Hardware Key) - 
  Raisonance RKitL51 Lite Suite for 80C51 (Software Key) - 
  IAR EW8051 - Embedded Workbench for 8051 (e.g. LPC900) - IAR Embedded Workbench for 8051 (EW8051) including IDE, C-Compiler, and Simulator / Debugger