ZBar is an open source software suite for reading bar codes
CEED Library: Code for Efficient Extensible Discretizations
3D Without Boundaries
A barcode encoding library supporting over 50 symbologies.
A library for scientific data visualization
Cross-platform, scientific graphics plotting library
A Forth compiler with a little difference
The cross-platform library behind the Hugin photo stitcher
Analysis, visualization, edition of 3D atomistic models
Tools to process and visualize scientific data and images
VCF vcard, XML xcard, JSON jcard;View, Edit, Convert, Export, CSV, QR
Precision Trigonometry: Advanced Calculator for Complex Math
Uranie is CEA's uncertainty analysis platform, based on ROOT
Calc: arbitrary precision C-like arithmetic & calculator
A scriptable calculator
a package with useful scripts for X-ray diffraction physicists
Command-line calculator and libray.
OpenPTV