Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Anchor CMS - Free and lightweight blogging system
Oceanaudio - Ocenaudio is a cross-platform, easy to use, fast and functional audio editor.
Textpattern - Textpattern is an elegant content management system that is free, open source software.
GoldWave - GoldWave. Digital Audio Editing Software. Record โข Restore โข Convert โข Analyze. Fully loaded to do everything from the simplest recording and editing to the most sophisticated audio processing, restoration, enhancements, analysis, and conversions.