This inventory was produced in Task 6.2 of the H2020 project DiverIMPACTS (http://www.diverimpacts.net/). The aim of the database is to give an overview of existing tools and methods to promote crop diversification strategies (rotation, multiple cropping, intercropping) at different levels (including the value chain and territory levels). Tools and methods were described in terms of purpose, type, users, and technical characteristics. This inventory includes tools and methods developed to promote one or more crop diversification strategies as well as tools and methods developed to achieve an expected impact (and crop diversification may be a way of achieving this impact). By tool, we mean anything used as a means to support the user in decision or a choice-making. By method, we mean a particular procedure for supporting the user in decision or a choice-making. Tools and methods can be used in the form of software, online tools, paper sheets, mobile applications, etc.