Explanation for the installation of MinGW-minimal GNU compiler (and tools) for Windows.

ProjectLibre: Open source replacement of Microsoft Project.

Tahoe-LAFS is a Free and Open cloud storage system. It distributes your data across multiple servers. Even if some of the servers fail or are taken over by an attacker, the entire filesystem continues to function correctly, preserving your privacy and security.

MIT Photonic Bands (MPB) electromagnetic eigenmode solver Meep finite-difference time-domain simulations Harminv extraction of complex frequencies and amplitudes from time series libctl Scheme/Guile-based scripting of scientific code (used as the interface for MPB and Meep). h5utils visualization of HDF5 data files NLopt nonlinear optimization library implementing many different optimization algorithms Cubature code for adaptive multidimensional integration of vector-valued integrands via the Genz-Malik algorithm. Faddeeva_w code to compute the complex error function (Faddeeva function).

Crowdfunding site for Open Source Software projects. Unlike other sites, it is designed to attract contributions from businesses as well as individuals.

Open source optical spectrometer based on Arduino.

OpenVizsla is an open source, high-speed USB sniffer that will help decode, debug and hack proprietary USB hardware devices.

Another open-source RTOS. Unlike others, it comes with a task state diagram.

List of free (as in freedom) readers for PDF files.

OpenSource GPS is software for x86 PCs that allows you to acquire, track and demodulate signals from GPS satellites. OSGPS requires a Zarlink GP2021 12 channel GPS correlator chip or software receiver hardware such as the GPS1A, see www.gpscreations.com. Does not appear to be very active recently.