Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
Audioalter - Your online audio toolkit. A collection of easy-to-use web tools for all your audio files
GNUitar - GNUitar is guitar effects software that allows you to use your PC as guitar processor.
Tune Transcriber - Learn and transcribe music for free from your web browser (no install needed).
go-dsp-guitar - A cross-platform multichannel multi-effects processor for electric guitars and other instruments.
Transcribe - An online app that reduces the pain of converting audio & video to text. Saves thousands of hours every month for journalists, lawyers, students and professional transcriptionists all over the world, including researchers in Antarctica.