Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
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.
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
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.