You could have downloaded LPCXpresso 7.3.0 for Mac from our application library for free. The application lies within Developer Tools, more precisely IDE. The most frequent installer filename for the application is: lpcxpresso_7.3.0_186.pkg. This free software for Mac OS X is a product of LPCWare. The most popular version among the application users is 7.3.
From the developer:
The LPCXpresso IDE is a highly integrated software development environment for NXP's LPC microcontrollers that includes all the tools necessary to develop high-quality software solutions in a timely and cost effective fashion. LPCXpresso is based on Eclipse and has many enhancements to simplify development with NXP LPC microcontrollers.
You may want to check out more software for Mac, such as HexDecBin, Pleinpot or PLCEdit, which might be related to LPCXpresso.