Helm is a free, cross-platform, polyphonic synthesizer that runs on GNU/Linux, Mac, and Windows as a standalone program and as a LV2/VST/AU/AAX plugin.
Luppp
Luppp is a music creation tool, intended for live use. The focus is on real time processing and a fast and intuitive workflow.
Azul
Blue is an open-source, cross-platform desktop application for composing music. Use visual tools together with text and code to create the music of your dreams.
Repollo
Un marco para el desarrollo de software de audio.
samplv1
samplv1 is an old-school all-digital polyphonic sampler synthesizer with stereo fx.
Giada
Giada is an open source, minimalistic and hardcore music production tool. Designed for DJs, live performers and electronic musicians.
Pragha
Pragha is a Lightweight Music Player for GNU/Linux, based on Gtk, sqlite, and completely written in C, constructed to be fast, light, and simultaneously tries to be complete without obstructing the daily work. 😉
Persépolis
Persepolis is a download manager & a GUI for Aria2.
Zarapito
Curlew es un convertidor multimedia de código abierto, gratuito y fácil de usar para Linux.
Jitsi Meet
Jitsi Meet is an open-source (Apache) WebRTC JavaScript application that uses Jitsi Videobridge to provide high quality, secure and scalable video conferences. Jitsi Meet in action can be seen at here at the session #482 of the VoIP Users Conference.