RLM-Software

iOS, Mac & Windows calculator applications for Business, Finance and Scientific professionals. Inspired by real world calculators but, enhanced with menus and features to bring up the most of your Mac, Windows or iOS device.

Mac & Windows Calculators Apps


LCC Win32

RLM-12C
Business and Finanacial calculator inspired by the HP-12C.

LCC Win32

RLM-11C
Scientific calculator inspired by the HP-11C.

LCC Win32

RLM-12P
Business and Finanacial calculator inspired by the HP-12C Platinum.

LCC Win32

RLM-15C
Scientific calculator inspired by the HP-15C.


NOTE: The above apps are 'Share Ware' and can be downloaded and used for free. Nevertheless if you want to stop the popup window asking for support, you must pay USD $10 shareware fee via PayPal. This fee is valid for all the Mac & Windows apps.

Lcc Win32 Jun 2026

The original LCC by Fraser and Hanson was not under the GPL (General Public License). It had a custom license that allowed free use for non-commercial purposes but required a license fee for commercial use. Jacob Navia inherited this model and enforced it vigorously.

For live CD environments, minimalist Linux distributions running under Wine, or embedded Windows setups (e.g., Windows XP Embedded), LCC Win32’s tiny footprint allows on-the-fly compilation without a multi-gigabyte SDK. LCC Win32

The LCC Win32 linker can output raw binary images, making it suitable for writing boot sectors, EFI applications, or embedded x86 firmware. Its small overhead is a feature, not a bug. The original LCC by Fraser and Hanson was

is a specialized integrated development environment and compiler system for the C programming language, designed specifically for the Windows operating system. Developed and maintained by Jacob Navia , it represents a significant adaptation of the original LCC (Local C Compiler) created by Chris Fraser and David Hanson. Historical and Technical Context and run. It provided syntax highlighting

One of LCC-Win32's most beloved components was its integrated development environment, (or later, the more polished LCC-Win32 IDE ). The IDE was not a heavyweight beast like Visual Studio; it was a lean editor with buttons for compile, link, and run. It provided syntax highlighting, project management, and a simple debugger interface. For many novice Windows programmers in the early 2000s, this was their first taste of writing real GUI applications in C, using the plain Win32 API without the abstraction layers of MFC or .NET.

DISCLAIMER: THESE CALCULATORS ARE NOT DEVELOPED, SPONSORED, SUPPORTED OR UNDERWRITTEN IN ANYWAY BY HEWLETT-PACKARD, TEXAS INSTRUMENTS OR ANY OTHER COMPANY OR SUBSIDIARY.