Groups.io is a privacy-focused group email list/web discussion tool. You can use announcement-only/broadcast, moderated, or restricted groups, or groups with other combinations of settings.

Virtual collaboration spaces where you can share visual information, have group text, voice, and video chats, including creating channels or sub-groups to focus on specific topics.
Groups.io is a privacy-focused group email list/web discussion tool. You can use announcement-only/broadcast, moderated, or restricted groups, or groups with other combinations of settings.
Google Groups is a group email list/web discussion tool. You can use announcement-only/broadcast, moderated, or restricted groups, or groups with other combinations of settings.
Mentimeter is a tool you can use to add questions, polls, quizzes, slides, images, gifs and more to presentations, webinars, and other live online meetings.
Ideabordz is a simple online white board tool you can use during a live online meeting/session. Participants can fill out sticky notes together, live, during the session. IdeaBoardz is a team collaboration tool. It allows teams to collectively brainstorm, gather inputs, reflect and retrospect.
Mural is an online visual collaboration space, a whiteboard tool you can use during a live online meeting/session. You can also use it as a planning, idea generating, and visualization tool to create simple and comprehensive visualizations and diagrams and collaborate with others on ideas.
Miro is an online visual collaboration space, a whiteboard tool you can use during a live online meeting/session. You can also use it as a planning, idea generating, and visualization tool to create simple and comprehensive visualizations and diagrams and collaborate with others on ideas.
Microsoft Teams combines video conferencing software with team collaboration tools. It is a workspace chat and videoconferencing tool, with file storage, and integration with other applications.
Jitsi is a free, secure, and open source video conferencing with collaboration functionality, video directly in browse. No downloads required.
A video chat and video conferencing service hosted by Google.
Slack is a workplace communication tool, where participants can message each other, create channels/discussion groups, and share tools and files. Slack also integrates with other apps/add-ins and other workplace tools.