Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
Pitchcard Explore - Pitch and explore ideas, find collaborators to build things
MyGuitarTuner.com - Online microphone tuner for guitar, ukulele, violin and other instruments. Tune by ear or using the microphone of your device. It's fast and accurate algorithm makes it one of the best online microphone tuners available.
Pitchbot - Chat with Pitchbot to perfect your VC pitch in 10 minutes.
LINGOT - Musical instrument tuner, LINGOT is a musical instrument tuner.
Pitchcard - Pitchcard is an online platform for pitching your ideas and getting quick feedback.