Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
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.
Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.