Facile2Soutenir is a Firefox extension designed to facilitate support for various projects and associations while shopping online at no extra cost. It automatically alerts users when they are on a partner website, providing an option to benefit from cashback offers with a single click. The extension connects users directly to their account on facile2soutenir.fr, where they can access a list of partner merchants and their favorite stores, featuring hundreds of partners such as FNAC, Groupon, and Carrefour.

This user-friendly application enhances the shopping experience by promoting solidarity purchases without compromising performance or privacy. It does not slow down the computer or affect browsing speed and is free from advertisements. Users' privacy is respected, as no personal information is shared or sold. Additionally, associations can register on the site to receive funding, making it a valuable tool for both shoppers and charitable organizations.