Twiddla is described as 'Mark up websites, graphics, and photos, or start brainstorming on a blank canvas. Browse the web with your friends or make that conference call more productive than ever. No plug-ins, downloads, or firewall voodoo - its all here, ready to go when you are' and is an website in the Office & Productivity category. There are more than 50 alternatives to Twiddla, not only websites but also apps for a variety of platforms, including Windows, Mac, SaaS and iPhone. The best alternative is Zoom, which is free. Other great sites and apps similar to Twiddla are BigBlueButton (Free, Open Source), OpenBoard (Free, Open Source), Miro (Freemium) and Google Drive - Drawings (Free).
Draw together in real time, from anywhere! In seconds, anyone can follow along with your drawing or draw with you from the app or on the web. Use Scribble alongside a call; talk with FaceTime or any other app you like.
Open source video conferencing for tutors - Audio and video: Real-time sharing of audio and video. - Shared whiteboard: Collaborate with students on a shared whiteboard. - Screen sharing: Go to presenting mode by sharing your screen.