These are both online resources for teachers. Both are aimed at Caribbean teachers, not just science teachers. Both have made significant progress but are in need of support. Such online endeavours require a minimum number of members to succeed as well as financial support and both appear to be achieving this. Both encourage teachers to upload material.
The Caribbean Educators Network is described as a "social network" for teachers. It has over 1000 members around the Caribbean and elsewhere. Apparently it is better known in Trinidad (over 300 members) than in Guyana (40+). It is free and there are online resources and events. Worth joining.
Notesmaster is a free portal to learning resources for CSEC teachers and students. It has more resources for Chemistry than Physics - hopefully more will be added soon. More features are promised soon. Worth joining.