Find a list of different sustainability platforms:


Social Innovations
A German platform offers a "solutions finder" displaying several approaches from fields like education, migration, sustainable consumption, and on which the social entrepreneurs also share their lessons learnt:
https://sigu-plattform.de/loesungsfinder/ 

The German newsoutlet "Zeit" asks all citizens to submit their solutions to everyday problems (Plan d). A few thousand solutions have been submitted:
https://www.zeit.de/serie/plan-d




Education
Yooweedoo is a platform provided by the University of Kiel, Germany, which offers free online courses (social entrepreneurship):
https://www.yooweedoo.org/de/home



Social Business
Socialbusinesspedia is a website provided by the Yunuscentre in Bangladesh:
https://socialbusinesspedia.com



Climate Solutions
The Solar Impulse Foundation offers a search engine and a database of more than 1500 climate innovations:
https://solarimpulse.com/solutions-explorer



City Solutions
Tech4good is a platform provided by the EU for sustainable city solutions (renewable energy, mobility,...)
https://marketplace.intelligentcitieschallenge.eu/en?