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Walking Papers is like walking, but with paper. With Walking Papers you can print a map from OpenStreetMap, walk around with it and take notes and sketch improvements - then you scan it in, edit it in Potlatch and then we all have a better map!
MENYA is a note writing software. It makes it easy to write notes and export them to common document formats like PDF. You may also load a common document formats as background and then write notes on it.