Developing a DSL, textual or graphical, is rarely a single-person task. Involving several users and developers at the same time is often required to ensure that the finally produced solution actually fits the expected needs. Thus, when using the EMF and related tools to define and implement a DSL, having more collaboration features could really bring practical additional value to that process. Collaboro, hosted in Eclipse Labs, recently proposes an approach to make language development processes more participative, meaning that both DSL developers and users can collaborate more together. In this lightning talk, we quickly present the current main features of the prototype as well as some envisioned evolutions using other Modeling projects.