Download SoX - Sound eXchange for free. SoX is the Swiss Army Knife of sound processing utilities. It can convert audio files to other popular audio file types and also apply sound effects and filters during the conversion.
Free, Open Source Modular Synth Software Lets You Create 70s & 80s Electronic Music—Without Having to Pay Thousands for a Real-World Synthesizer | Open Culture
In the past decade or so, the analog modular synth—of the kind pioneered by Robert Moog and Don Buchla—has made a comeback, creating a booming niche market full of musicians chasing the sounds of the 70s and 80s.
Hacker101 is a free class for web security. Whether you’re a programmer with an interest in bug bounties or a seasoned security professional, Hacker101 has something to teach you.
WinWorld is an online museum dedicated to providing free and open access to one of the largest archives of abandonware software and information on the web.