JOSM , OpenStreetMap and Map

Offline Map:

http://maps.me

https://osmand.net

Street
https://www.mapillary.com/

GPS:

GPX Logger

GPS Logger

GPS Essentials


OSM Data Collection
OSM Tracker

Mapzen

Vespuscci

Mapswipe

GeoMaptool  (customized from ODK, from Sirajganj)

Worldwide Disaster Mapping

http://tasks.hotosm.org


Little Apps

Visualize:

CartoDB

Compare: 

http://osmfight.neis-one.org/

3D

http://demo.f4map.com/

OpenSourceGIS

QGis

http://www.omkserver.com/

OpenStreetMap:

https://www.openstreetmap.org

http://osmlab.github.io/show-me-the-way/

Photo:

http://wiki.openstreetmap.org/wiki/Photo_mapping

JOSM:

https://josm.openstreetmap.de/

I was having connectivity issues while downloading map in JOSM

launching JAR from command line showed more details about what was going on

tried with both 10768 and the latest version

Problems were:

connection timed out, 

unknownhost

Following things did not help

Setting proxy

Replace https with http

replacing domain names with IP

Finally, organizers found out that running following line in the command prompt solves the problem

setx _JAVA_OPTIONS -Djava.net.preferIPv4Stack=true