In MetaEdit+ you can work in multiple projects, each of which can consist of hundreds of models. You can work in several parallel projects at the same time, and you can reuse and share data between these projects. Projects can be based on the same or different modeling languages, and users can be assigned access to some projects and denied access to others.

A repository is composed of projects, and each project is composed of a group of modeling languages, models and their contents. Some projects may contain just the modeling language definition, or just models. In the demo repository that is supplied with MetaEdit+, there are there is a set of predefined projects each consisting of one of the modeling language listed in Table 2-1. Furthermore, there are also example projects, like ‘Tutorial’, that include no modeling language definitions themselves, just models based on some languages in other projects (in MetaEdit+ these models are called graphs).