FLAC - A free, open source codec for lossless audio compression and decompression
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Opus Interactive Audio Codec - Opus is a totally open, royalty-free, highly versatile audio codec.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Vorbis - Ogg Vorbis is a fully open, general-purpose compressed audio format for mid to high quality...
iTerm2 - A terminal emulator for macOS that does amazing things.