- 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
- Maths
Open source, free, requires MacTeX or similar installation. Released 2005, actively maintained.
- GDPR
- no registration
- open source
- sufficiently free
- Create learning material
Commercial application, sufficiently free, registration necessary. Edu discount with form (unspecified amount). Released 2021(?).
- 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
- Collaborative boards
- Project management
Commercial tool with very broad basic version; registration required. Released 2011.
- sufficiently free
- Collaborative boards
- Project management
Collaborative kanban boards. Optional ‘pomodoro’ time tracking.
Commercial tool, free basic version, registration required. Released 2011.
- sufficiently free
- Collaboration
Collaborative e-reader and annotation tool. Upload your teaching material so students can chat about it; automatically collect data on engagement and stumbling blocks. Sells eBooks to students. Clears copyright and charges students if your institution isn’t entitled access.
Commercial tool, free basic version, registration required. Released 2023.
- sufficiently free
- 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
- Collaborative boards
Collaborative whiteboard software. Basic writing and drawing tools: Ellipses, rectangles, lines of various thickness; one font, ten colours. Generate private boards with UUID in URL, or with (guessable) chosen name; self-hosted or use the demo server (with no data-retention nor -protection policy described, hence not GDPR-compliant).
Open source, free of charge, no registration needed. Released 2020.
- no registration
- open source
- sufficiently free
- Collaborative boards
- Project management
Specific tool for SCRUM retrospective meetings which were managed elsewhere (Trello, KanbanFlow, JIRA, …), with action tracker, polls and health checks. SSO/two-factor authentication and secure (ISO 27001), but registration required (hence not GDPR).
Private provider, free of charge, registration required. Released 2021.
- sufficiently free
- Collaborative boards
Collaborative mindmaps and flowcharts.
Commercial provider, free basic version, registration required. Released 2013 (no updates 2021–2024).
- sufficiently free
- Collaborative boards
Collaborative whiteboard software. Free version has only single editor, who can sort-of screencast by chat/commenting and controlling pointer of all viewers. Divided into frames/sections for presenting.
Commercial tool, free basic version, registration required for editor (but not for viewers, and GDPR compliant). Released 2010.
- Collaborative boards
- Project management
Simple collaborative Kanban board; two types of notes, coloured by user (eight colours), single (black) font. Not clear how many users possible, no stated data security policy. Looks good but very limited.
Open source, free of charge, no registration needed. Released 2011.
- no registration
- open source
- sufficiently free
- Collaborative boards
Collaborative whiteboard software focused on drawing options. Background is colour, a PDF, or an Openstreetview map. Many freehand drawing options, plus boxes and ellipses. First user is admin, who can ban/unban others via chat.
A few unusual options in chat (YouTube player, random dice throw generator), presumably from a specific gaming need of authors. Boards get deleted after 30 days of disuse, or on request. A few bugs (e.g., map not changeable).
Free of charge, GDPR compliant, no registration needed. Released 2017.
- GDPR
- no registration
- sufficiently free
- Collaborative boards
Collaborative whiteboard software. Black-and-white drawings only (with mouse/stylus/pointer) and text (keyboard input). Boards have a random URL. Probably GDPR compatible but doesn’t explicitly claim so. Only two simultaneous users allowed per board in free version, but more seemed no problem in testing.
Free of charge, without registration. Released around 2017.
- no registration
- sufficiently free
- Collaborative boards
- Project management
Collaboratively create diagrams from sticky notes, on fixed-size boards. Several shapes and colours of sticky notes, which can be turned into diagrams with connectors (arrows) and icons. In Pro version, visitors don’t have to register (just choose a screen name) and are able to edit.
A variety of templates are available (Kanban, SWOT, retrospectives, breakout groups, … ); custom templates in Pro version.
Used to be free tool, registration required for owner. Released 2011.
- Collaborative boards
- Project management
Collaborative board with extensive template options (Kanban, mind map, SWOT, flowchart, …), fixed or infinite size. Text, tables, sticky notes, all flowchart shapes and connectors, 200 icons, images, etc. View-only link can be set to expire, visitor password can be required. Chat, timer and voting options. Can show all cursors, or broadcast owner’s.
Commercial provider, registration required to edit (view-only access with just a screen name). Released 2010.
- sufficiently free
- Collaborative boards
Collaborative pinboard for collecting ideas and results, or making slideshows/storybooks. Allows polls.
Commercial tool, free basic version, registration required for owner. Share with QR code. Edu version ($200/year) allows 200 students and 30min videos. Founded 2012 as Wallwisher (free), rebranded 2018 as Padlet (commercial).
- sufficiently free
- Collaborative boards
Collaborative online whiteboard platform, currently the most popular tool of its kind. Large amount of templates ordered by use case.
Commercial provider, free basic version, registration required. Rebranded as Miro in 2019, founded as Realtimeboard in 2011.
- no registration
- sufficiently free
- Collaborative documents
Free, open source tool, GDPR-compliant but requiring login via TUM (SSO) or self-hosted instance. This project is a fork of a fork: HackMD released 2015, from which CodiMD forked 2017, from which HedgeDoc forked 2018.
- GDPR
- open source
- sufficiently free
- TUM
- Collaborative documents
- Maths
Edit LaTeX together online. For bibliographies, you must either pay or export them first to BibTeX format.
Open source tool, hosted for TUM users at https://sharelatex.tum.de — otherwise use self-hosted (then unlimited collaborators and unrestricted compilation speed, no Mendeley/Zotero integration), using their hosted instance. Released 2011.
- GDPR
- open source
- sufficiently free
- TUM
- Collaborative documents
Collaborative (markdown) text editor with chat. Whiteboard, slideshow mode. Random URL
Open source, either install instance on your own server or use one of a long list of public instances (all have different policies on visibility, and content deletion; so some are GDPR-compliant). Released 2010.
- no registration
- open source
- sufficiently free
- Collaborative documents
Collaborative usable office suite (e.g. texts, code, spreadsheets, whiteboard, markdown slides, diagrams, or kanban boards).
Open source, privacy by design, usable without registration (but registration needed to upload files). Hosted by TUM at https://cryptpad.rbg.tum.de/. Released 2014.
- GDPR
- no registration
- open source
- sufficiently free
- TUM
- 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
- Presentations
- Quiz/ survey
Private provider. Requires teacher registration (use the “Open Classes” category to allow registration-free student participation). Since 2014.
- no registration
- sufficiently free
- Create activities
- Presentations
- Quiz/ survey
Commercial provider, very limited base version, teacher registration required (students can answer anonymously, or with SSO). Since 2015.
- no registration
- Quiz/ survey
Live voting/survey/quiz tool, intended for presentations. Quizzes, exams, word clouds, …
Commercial provider, free basic version, registration required. Since 2011.
- no registration
- sufficiently free
- Quiz/ survey
Private provider, GDPR-conform, no login needed for students, pre-paid version available for TUM staff (see instructions here).
- GDPR
- no registration
- open source
- sufficiently free
- TUM
- Quiz/ survey
Uni development, GDPR conform, free of charge, with client download for teacher, no registration for participants. Since 2011.
- GDPR
- no registration
- sufficiently free
- Live chat
- Quiz/ survey
Uni-Tool, free of charge, usable without registration. Since 2012, actively promoted 2021-2023.
- no registration
- sufficiently free
- Create activities
- Quiz/ survey
Commercial tool, free basic version, registration required for teacher (not for participants). Since 2013.
- no registration
- Maths
- Quiz/ survey
Single-question survey tool intended for integration into presentations. Multiple-choice, free text or numeric answers; time-limited; immediate results. Exchangeable question collections. Supports LaTeX notation for maths.
Private provider, free, registration required. Developed in 2011 at Uni Paderborn, spun off 2017.
- GDPR
- recommended
- sufficiently free
- Collaboration
- Quiz/ survey
Clean-looking tool for short surveys; especially good options for agreeing on dates/times.
Private provider, free of charge without registration. Since 2000.
- no registration
- sufficiently free
- Create activities
Wheel-of-fortune type spinner, where you put in the options (e.g., all students, to fairly select a student). Lots of options in colours and sound effects.
Private provider, free of charge, usable without registration. Since 2019.
- GDPR
- no registration
- sufficiently free
- Create activities
- Quiz/ survey
Commercial provider, limited free account (no more Edu version), registration required. Since 2012.
- Communicate with students
- Create activities
- Other
Commercial provider, free of charge, GPDR-compliant, registration free. Since 2017.
- GDPR
- no registration
- sufficiently free
- Create activities
- Other
Free service, private provider, registration needed, checks you control the account.
- sufficiently free
- Create activities
Write an email to your future self — e.g. as learning reflection.
Private provider, GDPR compliant, free of charge, registration free but have to hand out your email (BUT: No verification whether your own email). Released 2019.
- no registration
- sufficiently free
- Collaborative boards
- Create activities
- Presentations
- Quiz/ survey
Interaction tool with live voting, word clouds, group creation and more. Cannot export in cheapest paid package (requires premium).
Private provider, free basic account, no registration necessary. Since 2019.
- no registration
- sufficiently free
- Collaboration
- Create activities
- Quiz/ survey
Private provider, free of charge, usable without registration. Since 2010; website quite outdated/neglected since 2020.
- 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
- Create activities
- Quiz/ survey
Was a live interaction tool.
Provider State of Hesse, free of charge, usable without registration. Defunct 2024.
- no registration
- sufficiently free
- Create activities
- Create learning material
Open source, free of charge, self-hosted or using H5P Lumi. Since 2015.
- open source
- recommended
- sufficiently free
- Create learning material
- Presentations
Educational consortium from Switzerland, open source, free of charge, registration-free. Since 2003 as Uniboard, 2008 as Open-Sankoré, forked 2013 as OpenBoard.
- GDPR
- no registration
- open source
- sufficiently free
- Create learning material
- Other
Convert Word files to Markdown, e.g. for subsequent use in CodiMD.
Open source tool, free, no registration, can be used online immediately.
- GDPR
- no registration
- open source
- recommended
- sufficiently free
- Collaborative boards
- Create learning material
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 or ‘like’ button. Integrations with many other services.
Commercial provider, free basic version, registration required. Since 2010.
- open source
- sufficiently free
- Create learning material
Text:
- OpenAI (Registration with mobile phone number required)
- Jenni
- YouChat
- Writesonic
Other:
Detection:
- sufficiently free
- Create learning material
- Other
Provider: Zurich University of Applied Sciences, free of charge, registration required. Since 2019.
- sufficiently free
- Accessibility
- Other
Free plugin, private provider. Since 2023.
- Accessibility
- Other
Charitable provider, free application, no registration needed. Since 2007.
- no registration
- sufficiently free
- Accessibility
- Create learning material
Since 2017, abandoned 2023.
- GDPR
- no registration
- sufficiently free
- Accessibility
- Other
Free application, private provider. Since 2021, major AI-based update late 2024.
- Videos
Commercial provider, free basic version, registration required. Since 2015.
- sufficiently free
- Videos
Open source program, free of charge, no registration needed. Since 2008.
- no registration
- open source
- sufficiently free
- Videos
Advanced video editor with MacOS, Windows, Linux and iPadOS versions. All-in-one tool for editing, colour correction, VFX, motion graphics and postproduction.
Commercial provider, free basic version, no registration needed. Since 2004.
- GDPR
- no registration
- recommended
- sufficiently free
- Create learning material
- Videos
Video hosting and basic editing; create in-video questions.
TUM: Campus license.
- GDPR
- Videos
Commercial provider, registration require for free trial version (which visibly watermarks your output) but TUM has a license (see instructions here). Since 2002.
- GDPR
- no registration
- TUM
- Images
- Presentations
Infographics design service in many formats, from icons to packaging. Used to have free tier.
Commercial provider, registration required. Since 2012.
- Collaborative boards
- Create learning material
- Other
Commercial provider, free app, no registration required. Since 2019.
- no registration
- sufficiently free
- Collaborative boards
- Collaborative documents
- Create learning material
- Images
Collaboratively create all kinds of diagrams. Cross-platform app with many third-party integrations.
Open source, GDPR-compliant, free, usable without registration (online or on desktop). Since 2012, evolved from 2000-era JGraph.
- GDPR
- no registration
- open source
- sufficiently free
- Create learning material
- Images
- Wikimedia Commons: Often less aesthetic, more techical images. Various licenses, many images requiring attribution.
- Flickr: Various licenses, some needing attribution.
- Unsplash: Large amount of free-to-use images (€72/year for unlimited downloads, pro content, and illustrations/clipart). Since 2013 (then as a Tumblr blog).
- Pexels: Stock photos, supported by links to Pixabay plus Canva as editor. Since 2015.
- Open Clip Art: Vector (.SVG) images. Since 2004.
- Pixabay: Wide range of images; supported by links to commercial stock photos (iStock). Since 2010.
- Public Domain Pictures: Freemium model, charges you for higher-resolution public domain images(!) as well as linking to Adobe and other commercial stock photos in results. Since 2007.
- Freepik: (€60/year for AI credits, €120/year for extra AI plus premium stock photos; free is 10 images/day.) Extensive set of stock photos, but focused on AI tools for generating and editing. Since 2010.
- Videvo: Stock video footage site (now owned by Freepik), AE and Pp templates (intros, mostly), music and sound effects. Since 2012.
- no registration
- recommended
- sufficiently free
- Create learning material
- Presentations
Windows-only eLearning authoring tool for HTML5/SCORM. PowerPoint-lookalike course builder with lecture recorder; can convert .pptx into learning modules.
Commercial provider, free 14 days trial.
- Presentations
Open source plugin for MS PowerPoint, no registration. Released 2012, last update 2020.
- GDPR
- no registration
- open source
- sufficiently free
- Maths
- Presentations
Powerpoint extension to typeset LaTeX mathematics, on Mac or Windows. (Note for Mac users: In Keynote/Pages, you can natively insert maths; otherwise use the LaTeXit service anywhere.)
Free open source plugin for MS PowerPoint. Released 2007; actively updated.
- GDPR
- no registration
- open source
- sufficiently free
- Presentations
- Video conferencing
Commercial provider, EU-GDPR conform, requires payment and registration. Released 2009.
- GDPR
- sufficiently free
- Presentations
- Quiz/ survey
Create presentations and learning units, and integrate into your LMS (e.g., Moodle). Quizzes, surveys, mindmaps, gamification. [Real-time ranking (quizzes), and following specific students requires Expert (€120/year) package.]
Private provider, GDPR conform, requires registration. Released 2015.
- GDPR
- sufficiently free
- Images
- Presentations
Create presentations and infographics. Intuitive image, video and PDF editing and compositing with animation effects.
Private provider, free browser-based software, registration required. Released 2016 as Spark, renamed Express in 2021.
- sufficiently free