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Skitch is a screenshot editing and sharing utility for Mac and iOS that permits the user to add shapes and text to an image, and then share it online. Images can also be exported to various image formats.

Google Drawings, part of Google Drive , allows users to collaborate creating, sharing, and editing images or drawings. It can be used for creating charts, diagrams, designs, flow-charts, etc. It contains a subset of the features in Google Drive - Slides but with different templates. Its features include laying out drawings precisely with alignment guides, snap to grid, auto distribution, and inserting drawings into other Google documents, spreadsheets, or presentations. »

RealtimeBoard is the simplest and versatile visual collaboration tool for teams that work in a digital environment. RealtimeBoard is perfect for remote collaboration, brainstorming, visual planning, organizing thoughts, gathering feedback and review, creating concepts and online tutoring.

Deekit is a whiteboard for remote teams to share ideas, brainstorm together, discuss complex problems, product and business planning. An unlimited canvas for you and your team to draw, write, edit and work with other content. Together, in real time.Deekit is available on all your devices - desktop, tablets or why not mobile when you’re on the go. Want more space - why not the TV or project it on a wall?

A Web Whiteboard is touch-friendly online whiteboard app that lets you use your computer, tablet or smartphone to easily draw sketches, collaborate with others and share them with the world.

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. Browser-agnostic, user-friendly.

Online Brainstorming and Collaboration. Brainstorm, organize, prioritize and act on the best ideas, in the same room or around the world, on a realtime sticky note whiteboard.

Ideaflip is an ingenious tool for evolving ideas together in an organic, kinetic way.

A real time shared whiteboard in your browser, teach, explain, sketch. For work, study, fun. Save all your whiteboard for later use.

Conceptboard goes beyond the idea of online whiteboards and adds realtime collaboration, document sharing, visual feedback, task management, live meetings and more.

Groupboard is a multi-user shared drawing board that you can place on your web page by simply copying a few lines of HTML code. You can also run Groupboard on your own web server. It can be used for tutoring, distance learning, training, or simply for fun! With the whiteboard you can upload background images and draw on top of them, and all users connected to the board will see the changes in real-time. Works on any web browser including iPad, iPhone and Android. Free for 5 users.

Simple and easy online multi user whiteboard, start skrbl, give out your URL & start working together. Sketch, text, share files, upload pictures all in one common shared space. There are no new tools to learn, nothing to download, nothing to install. Brainstorm on our simple whiteboard to start thinking together, everyone sees the same screen, everybody gets on the same page.

Record. Publish. Share.Lensoo Create turns your iPad or Android tablet into a virtual whiteboard with voice recording and smooth digital writing. Using Lensoo Create you can quickly share your ideas through email, Facebook, Twitter or LinkedIn from virtually anywhere. Whether you are a teacher looking to instill knowledge, a student wishing to present your ideas or simply a person with an impressive skill to share, Lensoo Create is for you.

BaiBoard lets people collaborate across the Internet via:1. Zoomable multi-page whiteboard.2. Collaborative annotation on PDF docs.3. Screen Sharing from iPad to web browser.