Vanido - Vanido is a singing coach in your pockets.
Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Scope - The PC based Soundcard Oscilloscope receives its data from the Soundcard with 44.
TeXworks - The TeXworks project is an effort to build a simple TeX front-end program (working environment)...
La-Vocal - Automate vocal exercises to practice easily & efficiently.
TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.