По запросу: "cross-platform messaging" найдено 144 иконки.

drop-up Created with sketchtool.
Google Messages icon
fundamentals/the-browser/gecko Created with Sketch.
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cross-checkbox
hangouts [#153] Created with Sketch.
cross-square Created with Sketch Beta.
push
UIkit icon
Gitter icon
Keybase icon
Zulip icon
cross-volume
cross Created with Sketch Beta.