ilo - Premium Twitter analytics
ePHOTOzine - Photography website with camera, lens and smartphone news, reviews, photography techniques, plus a photography gallery and forums, with photo competitions, blogs and buyers guides.
Tweetastic - Better Twitter analytics, scheduling and more
CameraDecision - CameraDecision helps users to find a camera based on pros and cons, comparisons, and descriptions.
Accountanalysis - A tool to evaluate Twitter accounts
DPRevived - The community-run digital photography resource.