mediumaevum:

Digital Mappa 1.0 now online – new digital resource for medievalists

The premise of the resource is simple: if you have a collection of digital images and/or texts, you should be able to produce an online resource that links together specific moments on these images and texts together, annotate these moments as much as you want, collaborate with others on this work, have the content you produce be searchable, and make this work available to others as you wish. And you should be able to do this with little technical expertise.

You can try it here, it has a sandbox mode.

Some of the projects that are already there:

1. Virtual Mappa – a fully annotated a collection of early English maps of the world, including the Anglo-Saxon Cotton Map and the massive Hereford Map.
2. Old English Poetry in Facsimile – offering access to texts and digital images of the earliest facsimile of each surviving work of Old English poetry
3. Four Anglo-Carolingian Mini-Editions – annotating and transcribing part of the British Library’s Cotton Vespasian D. xv manuscript