Precision Trigonometry: Advanced Calculator for Complex Math
Scientific/engineering firmware repurposing HP business calculators!
an interactive "rolling paper" calculator
A scriptable calculator
Command-line calculator for Maidenhead- (QTH-, QRA-) Locators.
a live MIDI sequencer for JACK
A powerful arbitrary-precision calculator.
Calculate primes by using extremely fast sorting
Opossum is a minimal tiling window manager for X11/Linux
The IRC's Talking Robot
Rough internet speed testing tool (CLI)
One of the best simple arithmetic calculator!
powerpc disassembler/assembler
Arduino open source PID motor control