- Live chat
- Quiz/ survey
Commercial provider, no registration needed for participants. Since 2024, frontend for the underlying open source ARSnova project.
- GDPR
- no registration
- open source
- recommended
- sufficiently free
- Live chat
- Quiz/ survey
Collect, evaluate and present questions live. Access with QR-code or 8-digit room number. Students can reply to questions, teacher can also put up quick multiple-choice surveys. Unlimited questions and participants.
Free, GDPR-conform tool supported by Hessen, no registration needed for students (registration needed for teacher for automatic ChatGPT-based answers). Since 2019.
- GDPR
- no registration
- recommended
- sufficiently free
- Images
- Live chat
It’s for sending memes to students, so Categories = Live Chat (<Communicate with Students) and Images.
It’s TUM and GDPR, no registration — but not sufficiently free. Five star rated.
- GDPR
- no registration
- recommended
- TUM
- Collaboration
- Communicate with students
Peer Review-tool. Let students grade each other and track the outcomes. Used to have a free Edu tier, but bought out by Eduflow.com, which was then bought by Multiverse.io…
Private provider, registration required. Released 2015.
- sufficiently free
- Communicate with students
- Other
Pause your display, with a countdown and message.
Free of charge, registration free. Released 2022.
- GDPR
- no registration
- sufficiently free
- Communicate with students
- Other
Simple evaluation tool with up to ten questions, valued as agree/disagree with up to ten gradations; displays the results as shots on a target, one colour per question. Simple to write, can password-protect the results screen.
Private provider, free of charge, no registration, GDPR conform. Released 2015.
- GDPR
- no registration
- sufficiently free
- Communicate with students
- Other
- Presentations
- Videos
Streaming platform, mainly used by gamers but can be used for streaming courses. Very good performance, but adverts interrupt steams unless the viewer pays for subscription (in addition to static adverts). Registered viewers can chat with presenter.
Commercial provider, free to use, registration required to post (not to watch). Founded 2011.
- sufficiently free
- Communicate with students
- Live chat
Online private chat tool, self-hosted, without login needed.
Open source chat tool, free. Released 2020, last update 2021; demo site (2025) insecure.
- no registration
- open source
- sufficiently free
- Communicate with students
- Live chat
- Quiz/ survey
Live voting and feedback tool: QR or short URL to enter, chat, six standard buttons for lectures (too soft/ fast/ slow/ … ), quizzes, and surveys.
GDPR conform, commercially spun off University of Rostock tool, free basic version, no registration needed (except host in pro version). Released 2020.
- no registration
- sufficiently free
- Communicate with students
- Video conferencing
Video conferencing and webinar software: Videoconferencing, chat, breakout rooms, screensharing, whiteboards, screen recording, etc.
Commercial provider, GDPR conform, licensed by DFN for partner organizations (e.g., TUM) via SSO login. Released 2006, rebranded from Macromedia Breeze.
- GDPR
- TUM
- Collaborative boards
- Live chat
- Presentations
- Quiz/ survey
- Video conferencing
Videoconferencing system focusing on online event/group work. Virtual space “Proximity chat”, where participants move their avatars close to allow chatting; environment is a collaborative board so you can put any type of material or decoration.
Private provider, cost scaling by participants ($300 for up to 25, $500 for up to 100, etc) registration required. Released 2020.
- Collaborative boards
- Live chat
- Video conferencing
Video conferencing system focused on online event/group work. Virtual space “Proximity chat”, where participants move their avatars close to allow chatting; an open office type environment with chairs and plants to make physical breakout rooms (with whiteboards, games like chess, virtual TVs, … ).
Private provider, not GDPR compliant (except Enterprise plan), free of charge up to 50 participants, registration required. Released 2021.
- sufficiently free
- Collaborative documents
- Video conferencing
Video conferencing system focusing on online event/group work. Virtual space “Proximity chat”, where participants move their avatars close to allow chatting; an open office type environment with chairs and plants to make physical breakout rooms (with whiteboards, games like chess, virtual TVs, … ).
Private provider, GDPR conform, free of charge up to 25 participants, registration required. Released 2019(?).
- Collaborative boards
- Communicate with students
- Video conferencing
Video conferencing system focusing on online event/group work. Virtual 2D office/meeting space with proximity chat, in a cartoon-y ‘8bit’ style.
Private provider, free of charge for up to 10 participants, registration required. Released 2020.
- sufficiently free
- Communicate with students
- Video conferencing
Video conferencing system focusing on online event/group work. Was hosted at https://wonder.me, only demo on https://webflow.io (claiming “we’re hiring!”) still found in 2025.
Private provider, registration was required. Released 2020 as Yotribe, closed down 2023.
- no registration
- sufficiently free
- Communicate with students
- Video conferencing
Video conferencing system focusing on online event/group work. Virtual 2D office/meeting space with proximity chat, in a cartoon-y ‘8bit’ style.
Private provider, GDPR compliant, free of charge up to 15 participants (alternatively: AGPL self-hosting without limits), registration required. Released 2020.
- GDPR
- Communicate with students
- Video conferencing
Video conferencing and webinar software. Chat, breakout rooms, whiteboards, … .
TUM provided commercial version, free basic version, GDPR compliant, requires registration.
- GDPR
- sufficiently free
- TUM
- Live chat
- Quiz/ survey
Uni-Tool, free of charge, usable without registration. Since 2012, actively promoted 2021-2023.
- no registration
- sufficiently free
- Communicate with students
- Create activities
- Other
Commercial provider, free of charge, GPDR-compliant, registration free. Since 2017.
- GDPR
- no registration
- sufficiently free
- Collaborative boards
- Communicate with students
- Other
- Presentations
Pinboard, mainly intended for a teacher to present information (images, videos, text, links, …) and tasks. The students then have only reading permission, except where the teacher has inserted a commentary field or a rating field (with stars, or thumbs up/down). But alternatively, a board can be cooperative if you invite others and give them write permissions. Boards can be chosen to be public or private.
Commercial provider, free basic version, registration required. Since 2021.
- GDPR
- sufficiently free
- Presentations
- Video conferencing
Commercial provider, EU-GDPR conform, requires payment and registration. Released 2009.
- GDPR
- sufficiently free