Iian here (that’s two "i"s, weirdly!), creator of Codex, an annotation and graph-building environment which I am aiming to develop into a web-based “operating system” for all knowledge workers. Codex has its roots in the digital humanities but in the past couple of years specifically has broadened to be a multimedia, multi-window desktop environment for managing texts, annotation, video, photos, etc.
If you have any questions or would just like to talk I am always happy to catch up. And I would love to see your projects as well!