Disaster Mapping

When major disaster strikes anywhere in the world, HOT rallies a huge network of volunteers to create, online, the maps that enable responders to reach those in need.

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Latest Disaster Mapping Project

The past several months we have seen disasters and destruction on an unprecedented scale, and the HOT Community has activated to respond. Details on the projects, and how you can get involved are below. This is a critical time in the lives of millions of people worldwide, and we thank the mappers volunteering to support them.

Hurricane Irma and Maria


Hurricanes Irma and Maria have battered the Caribbean islands, causing extreme destruction...


HOT supports community mapping projects around the world and assists people to create their own maps for socio-economic development and disaster preparedness.

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Latest Community Project

HOT Summit 2018 is here! We're excited to partner with FOSS4G 2018 and meet up in beautiful Dar Es Salaam, Tanzania! 

We'll have talks on innovative projects, thoughtful facilitated disucssions and a chance to engage with fellow mapping community leaders, volunteers and partners. This year, there's also the unique opportunity to connect with the greater FOSS4G community to learn, plan and work together! 

If you've ever wanted to see a HOT field project in action, now'...


HOT develops several open source programs and applications to leverage collaborative mapping and the use of new technologies in the field of geographic information for humanitarian aid. Check them out!

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Latest Technical Project


Version 3 of the Export Tool officially LAUNCHED on 18th September 2017. The new version is now hosted at, with Version 2 available at till mid November 2017, when it will be shut down.


The Export Tool allows users to create custom OpenStreetMap (OSM) extracts anywhere in the world, by selecting an area of interest...