chalkboard

Mobile touch friendly lightweight chalkboard. Should work just fine in both desktop and mobile Chrome..

features:

basic figures available: lines, arrows, boxes, ellipses..
drawing modes: solid, dashed, dotted, "distorted" (supposed to mimic real world whiteboard drawings)
basic text typing (latin alphanumeric, all glyphs vector-rendered as you type them)
selecting, copypasting (works with system clipboard)
basic presenting: slides / viewpoint list handling and navigation
virtually infinite zoom
supports stylus / pen input instruments (e.g. drawing tablets), translating pressure into opacity and pen width
working with rasterized images (pictures could be pasted from clipboard, or dragged onto the board)
named boards
saving / loading board from / to browser local storage
downloading / uploading board from / to machine local storage (json serialised)
downloading board as png
session record / play mode (with backend also supports record save and load operations)
whiteboard (bright) / blackboard (dark) / greenboard themes

you'll need to have docker installed.