Freeplane - Freeplane is a powerful and free software for building mind maps.
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.
Linked Ideas - A macOS/iOS apps to treat ideas as links of concepts.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
SuperNotecard - Introducing SuperNotecard. SuperNotecard is an online writing tool that features virtual notecards to help arrange facts or scenes, track details, organize paragraphs, and clarify your composition process.
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.