In blogs http://sdi4apps.eu/2016/04/json-for-accessing-composition-of-map-composer/ and https://www.linkedin.com/pulse/json-accessing-composition-map-composer-karel-charvat?published=u I described APIs for sharing of map composition on our portals. Technical specification is here https://github.com/hslayers/hslayers-ng/wiki/Composition-schema. This methods are now used by SDI4Apps http://youth.sdi4apps.eu/, OTN http://www.opentransportnet.eu/web/guest/create-maps and FOODIE http://portal.foodie-cloud.org/. To be possible fully use advantage of this “Map sharing” we are looking for developers of Web mobile applications to tested with us possibilities of sharing compositions on their platforms. Please join us on MedHack http://www.medhackathon.eu/. Both Open Source or proprietary platforms are welcome.