Have you looked at TES - there is loads on there.

Hi
There is a site called eschool news which may help?

The Key recommends the following that might be useful.
ClassDojo - Free (basic), Communicate with parents, give feedback to pupils.
Edmodo - Free (basic) Set tasks, give feedback, and share resources with other teachers.
Google Classroom - Free, Create word documents and slideshows, set and mark tasks.
Seesaw- Free (basic), Set tasks and give feedback.
Showbie - Free (basic), Schedule tasks and give feedback.