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Open Data

“Open data is data that can be freely used, reused and redistributed by anyone – subject only, at most, to the requirement to attribute and sharealike” (Open Data Handbook, 2010-2012).
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World – International

GIS Geography – Provides links to various free resources for land cover

Data Portals – An International Catalog of Open Data Portals

OpenDataSoft – A comprehensive list of open data catalogs curated by experts from around the world.

Open StreetMap – OpenStreetMap is an editable, online map of the entire world that allows free access to the full map dataset.

ArcGIS Open Data community – Explore 23,000+ Open Datasets from organizations worldwide.

Natrual Earth – Free global vector and raster map data at small scales.

Global Satellite Imagery

USGS Earth Explorer – Offers a wide range of imagery from Landsat satellites that have been circling the globe for decades to hyperspectral imagery from experimental instruments imagined by NASA.

Sentinel Playground utilizes Sentinel Hub technology to enable easy-to-use discovery and exploring of full-resolution Sentinel-2 imagery.

NASA Earthdata Search – The Earth Science Data Systems (ESDS) Program provides full and open access to NASA’s collection of Earth science data for understanding and protecting our home planet.

NOAA Data Access Viewer – he NOAA Data Access Viewer holds satellite, aerial and LiDAR imagery.

EO Browser combines a complete archive of Sentinel-2, Sentinel-3, ESA’s archive of Landsat 5, 7 and 8, global coverage of Landsat 8, Envisat Meris, and Proba-V products in one place.

Download satellite imagery via Sentinel-2 on AWS or Remote Pixel


MakePath A continuously updated list of open source GIS software over the last 40 years till date.

Canada – Provincial and Municipal Open Data Portals

Open Data in Canada – Provinicial & Municipal Data Portals – Canada’s provincial and municipal Open Data sites that have been created to release freely available open data in Canada.

Canadian GIS & Geomatics – Free Data – Includes links to National, Provincial, and Municipal Open Geospatial Data portals, Fee based Geospatial Data, and online web mapping applications.

U of T Open Data Catalog – Access resources such as historical scanned maps and aerial photography predominantly covering Southern Ontario and the Toronto region.

Don Valley Historical Mapping Project – This project documents historical changes in the landscape of the Don River Valley.

Research Guide to Toronto Maps Online – This is a list of 25 sources of Toronto maps online, freely available to anyone with an internet connection.

Municipal Open Data Portals in the Toronto Census Metropolitan Area (CMA) allows users to access the City of Toronto official data set catalogue. Here users will find various information about the city in the form of geospatial web services and geospatial data sets. Data sets include: Toronto centreline, business improvement areas, food banks, neighbourhood boundaries, parks, waste management districts, transit data and much more.

Open Data Portals:  Mississauga, Peel Region, York Region