One to watch is the new initiative Open Handbooks in Linguistics. From their blurb: “We consider the open access publishing model to be especially important for handbooks for the following reasons:
Handbooks can represent a significant benefit to scholars around the world with limited or no access to commercial publishers’ book products, since they summarize current research in a compact and organized fashion.
Commercial publishers in our field are producing many more handbooks than in the past, since they represent a significant profit opportunity. Many linguist-hours are being poured into these volumes, but their focus and direction is being at least partly driven by publishers’ goals, rather than by the field’s needs.
Open exchange of ideas is essential to the advancement of science, and open access to our research products is therefore a key priority for our field, as for all scientific work.”