Groceries

• https://world.openfoodfacts.org/ provides crowdsourced nutrition and product information from across the world. Inconsistent data fill rate / quality.
• Food Label Information & Price (FLIP) at UofT's L’Abbé Lab - Canadian products' nutrition & UPC data and more. Available to researchers and public interest groups.
• https://savr.app <- compare the same basket of goods across 3 grocer locations
• A tool that lets you query multiple Canadian grocers' prices at once, to compare prices (uses undocumented internal APIs).
• https://grocerytracker.ca/
• BetterCart Analytics - they work with producers/retailers, but their data is also available to academics. This is a paid database. I hear that they have essentially the same information as Project Hammer, but for more retailers and for a longer timespan.

Anti-monopoly in Canada

• https://www.donotpassgo.ca/
• Canadian Anti-Monopoly Project

Retail research

• TMU's Centre for the Study of Commercial Activity (archived link, as they are rbranding)
• Some data on grocers' distribution networks from ON THE SEAMS (relevant article).
  • I believe one of the most effective ways of discovering Loblaws' distribution centres is to look at Choice Properties REIT's "Annual Information Form" - Appendix A.