Coughvid - Help screen COVID-19 by recording your cough
C-19 COVID Symptom Tracker - Self-report COVID-19 symptoms & help slow the spread 🇬🇧
Covy - Visualize the growth of COVID-19 on our map
Sensoria - Turns socks, t-shirts and bras to smart sensors
The Coronavirus App - Follow the epidemic in real time
Covid-19 Check-ups - Run coronavirus company-wide check-ups via Slack. Free.