To disable camera permanently on Firefox, open the menu button > Preferences > go to Privacy & Security settings > Permissions section > find Camera > click Settings > check Block new requests asking to access your camera > Save Changes > finished. Now every website requiring camera will automatically be blocked to access the camera. For example, it is useful if you often do screen sharing via video conferences but had been disabling manually every camera access so with this trick now you will have it disabled automatically in every conference while all other features like microphone (voice) and text (chat) still work normally. Another important benefit is that now you can disable your camera without putting a sticker to cover it physically. Happy conferencing! 

Camera privacy settings:

Disabling camera and save the changes:

To enable camera again, simply go to the same settings and uncheck Block new requests asking to access your camera and Save Changes.

This has been practiced on Firefox version 81 with Jitsi Meet.

BigBlueButton is a communication technology which is designed for online schooling that is accessible for everybody via web browser. With BigBlueButton, teacher can connect to students by voice/video call, live whiteboard, live presentation, collaborative text editing, and easily send them assignments in form of document files, all done without installing any application for everyone. It is a complete alternative to Zoom in the time of COVID-19 worldwide pandemic. It is free and open for everybody. This short tutorial explains the quick procedure for teacher to teach online in BigBlueButton. Happy teaching!

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This list presents generous free online providers who give multiple services that enables everyone chatting, video & voice conferencing, screen sharing, file sharing, collaborative document editing, and many more. The technology they give are mostly Jitsi, BigBlueButton, Mumble, Etherpad, and Jabber, with more additional ones. By "free" here I mean both ways that the services price are gratis and the software inside are also free as in freedom. I hope this list helps everybody worldwide to stay at home in the pandemic of COVID-19. Be safe and healthy!

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This tutorial explains you to communicate with people using Jitsi Video Conference via the internet. I hope this short guide helps everyone in this time of worldwide COVID-19 pandemic.

• 1) Web browser
• 2) Enough internet access
• 3) Earphone with microphone capability

• Gratis
• Instant (browser based), does not need additional application
• Universal, any device any operating system can use
• Video conference
• Voice conference
• Multiple participants
• Text chat
• Share screen in both ways
• Easy invite other person(s)
• Room administration (room password, first user is admin, kick, mute/unmute to participants)

Jitsi Meet is an awesome free software technology for video conferencing. Personally, I am currently testing Jitsi for my online class with my students in Indonesia. You can use Jitsi for either voice or video call with multiple participants online. The great news is that Jitsi Project provides a gratis chatroom at meet.jit.si for everybody so we can create conference room instantly and go talking without setting up any server first. This tutorial explains how to install Jitsi Meet desktop client on Ubuntu & Trisquel, and then quickly create a Jitsi server with that service, and go conferencing.

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GNU Jami is the new name of GNU Ring (ring.cx if you remember), the decentralized instant messaging from The GNU Project. Do you know, Jami is one among several FSF's High Priority Projects under the section Real-time Voice & Video Conferencing free software? And upon the name change, Jami got a lot of improvements including distros supports including Trisquel. This article explains how to install GNU Jami on Ubuntu and Trisquel for beginners. Happy conferencing!

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