Open Food Facts

Open Food Facts is a free, online and crowdsourced database of food products from around the world licensed under the Open Database License (ODBL) while its artwork—uploaded by contributors—is distributed under a Creative Commons Attribution–Share Alike license.
The project was launched on 19 May 2012 by French programmer Stéphane Gigandet during the "Food Revolution Day" organized by Jamie Oliver and has won the "2013 Dataconnexions Award" from Etalab and the 2015 OKFN Award from Open Knowledge.
In May 2016, its database contained more than 80,000 products from 141 countries. In June 2017, thanks to the growing ecosystem of apps and open data imports from various countries, this number rose to 880,000. In October 2019 OFF passed the 1,000,000 products milestone. 
Overview.
The project gathers information and data on food products from around the world.
For each item, the database stores its generic name, quantity, type of packaging, brand, category, manufacturing or processing locations, countries and stores where the product is sold, list of ingredients, any traces (for allergies, dietary laws or any specific diet), food additives and nutritional information.
Each contributor can add or edit food items based on the information explicitly shown on the package. As a result, the GTIN (Global Trade Item Number) embedded in the barcode on the packaging of the product (when available) is generally used as the identifier. Mobile phone applications allow for capturing photos and information that are reprocessed manually by volunteers.
Due to similar mechanisms for modification, extension, or deletion of content and structure, the project is sometimes compared to Wikipedia in the media.
Reuses.
The data is reused by various projects on issues related to palm oil, sugar, and location of the producers.