I've created, developed, or otherwise been heavily involved in working on the following projects (in roughly reverse chronological order):
Altmetric tracks mentions of scientific output across various different sources to provide measurements on both popularity and trends. I spent a couple of months working here, where, among other things, I worked on the Institutional Edition.
A project I worked on whilst at Digital Science, Dimensions is a data analysis application designed to allow research institutions to explore grant funding data. Making heavy use of Ember and D3 on the front end, and Clojure, Python and various data manipulation tools on the backend.
A wrapper library created for use in Symplectic Dimensions, wrapping ParallelJS and using common Ember patterns to allow easy use of web workers within Ember apps.
A small Ember app created primarily to deliver the presentation on Ember-Parallel in a way that allowed me to write everything in Markdown and still run arbitrary code demos.
A silly app created during the Digital Science Hack Break in 2013 for controlling a Parrot.AR drone over a web page using any or all of: a keyboard; voice commands; a Leap Motion; and Google Glass (not present in code repo). Built using node.js, Java, Clojure, ffmpeg and the Glass, Leap Motion, and Parrot.AR Drone APIs.
An annoying toy Google Glass app made using the Mirror API and Clojure that sends pictures of cats that are close by to you every 5 minutes.
TiddlySpace is an extensible not taking application built on top of TiddlyWeb, taking large influences from (and incorporating support for) TiddlyWiki. It has a full RESTful API and can be (and has been) used to create new applications totally unrelated to the original purpose.
A bookmarking application built on top of TiddlySpace, demonstrating both the use of TiddlySpace as a backend platform and how much can be accomplished. It consists of some code within a user's space, a bookmarklet and Firefox and Chrome extensions that have the benefit of still working with HTTPS sites.
I've created quite a few applications on top of TiddlySpace in the past.
A small collection of useful micro-libraries, mostly demonstrating common browser based JS concepts, like two way data binding.
I've also created a number of plugins for TiddlyWeb, several of which are used within TiddlySpace.