Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Deepnote - A collaboration platform for data scientists
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Gyana - Intuitive easy-to-use report and dashboard tool to stop wasting time on repetitive and tedious tasks.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.
Cron - Cron Calendar.