CoCalc provides a computational whiteboard with infinite canvas. Our web page All About Computational Whiteboard gives a quick visual tour of whiteboard features.
Chat with collaborators. Open multiple chat boxes within the whiteboard as well as the usual CoCalc Side Chat for the entire whiteboard file.
Many users can edit at the same time, see what the others are doing in real time, and center their view at the location of another’s cursor.
Select objects within a rectangular area and cut or copy them, then paste to the same whiteboard or a different whiteboard you already have open.
A CoCalc whiteboard can include Jupyter code cells. Whiteboard code cells allow:
over a dozen supported kernels
CoCalc’s massive library of pre-installed software
execution order determined by a directed graph
There’s a button “+ New” that creates a new page. You can see previews of all your pages in the pages panel, and click a preview to jump to any page.
You can also see a page number in upper left of the main whiteboard, and click or edit to go to a page.
The Search panel is ordered by page number. Putting things in different pages imposes an ordering in the search.
Choose one of the different pen shapes to draw freehand on your whiteboard. Supported pointing devices include most forms of mouse and trackpad as well as many Wacom tablets and iPencil and Apple Pencil.
Search View of a whiteboard gives you a panel that lists all text, sticky notes and code in order, with a search box at the top. You can search for text and click on any matching item to center the whiteboard on it. The ordering of items in Search View is lexicographic by the (y,x) coordinates: items closer to the top are listed first; items at the same height are listed left to right.
Search view can make your whiteboards easier to manage as they get larger.
Search view works well with to-do lists. To find all not done items, put
"[ ]" (note the quotes) in the search box. To find all completed items, search for
If you don’t see a menu choice for Search View in a current whiteboard, then refresh your browser, click the “split vertically” button (upper right), then click the dropdown that says “Whiteboard” and change it to “Search”.
Infinitely split whiteboard windows horizontally and vertically to view multiple parts of the whiteboard simultaneously.
A sticky note is a rectangle for enclosing text. When creating a sticky note, it’s easy to select from a variety of eye-catching background colors and text fonts and sizes.
You can view contents as an outline in a panel on the left and click to view any item instantly.
As with other native CoCalc applications, every change is recorded via browsable Time Travel You can see what changed, and who changed it, and copy/paste from any point in the history.
In a sticky note, text, etc., you can mark action items by placing a pair of brackets in the item, preceded and followed by a space and with a space between the brackets. The item will be displayed with an empty checkbox. Click the checkbox when the item is done, or place an “x” between the brackets, and it will show as a checked item.
At this time, the only way to export an image of all or part of a whiteboard is by taking a screenshot. Exporting a whiteboard to a pdf, png, or svg file is not yet implemented. See CoCalc issue #6024.