All these sites are recommended. The aim here is to give parents sites that are of a certain standard - we all know that there is a bunch of crap out there that we could find easily on our own. Finding good sites however, often takes a recommendation. Please let me know if there is a site you would like added here and I'll check it out.
ACADEMIC
Study Ladder (free trial) - Educational games site. Covers various subject areas.
Typing Club (free) - Learn to type.
Typing Club (free) - Learn to type.
Literacy
Reading Eggs and Eggspress (free trial) - Educational games site.
Starfall (free) - Educational games site.
Lexile Framework Information (info) - Scholastic's way of determining a child's reading level (Australia).
Reading A-Z (info) - AtoZ's way of determining a child's reading level (United States).
Recipes For Writing (free) - referred by someone else.
Homeschool Writing Curriculum (for fee) - referred by someone else.
Writing Wizard Handwriting Worksheet Maker (free) - Handwriting sheets that you can customise and print out. Please note that this is general handwriting and not state specific (each state of Australia has their own handwriting version and some teachers feel that teaching children one way, only to have them 'relearn' another way at school, can be detrimental). Referred by someone else.
Mathematics
Mathletics (free trial) - Educational games site.
IXL (free) - Educational games site.
Big Brainz (free) - Multiplication games - referred by someone else.
Print Graph Paper (free) - Input what you would like and print it out!
AUTISTIC SPECTRUM DISORDER
Twice Gifted (info) - Information on Aspergers/Giftedness.
Gifted Children with Autism (info) - by Margaret Neihart, on Davidson's.
Information on funding available to help with costs (info) - From Victoria, however applicable to all states and territories.
GIFTED
Hoagies Gifted (info) - A beginner's (and experts) guide to all things gifted (United States).
Twice Gifted (info) - Information on Aspergers/Giftedness.
OTHER
Australian Curriculum - Go to the Curriculum tab first.
QLD Studies Authority Essential Learnings
Resources for Special Needs Teachers (free) - Resources page.
QLD Studies Authority Essential Learnings
Resources for Special Needs Teachers (free) - Resources page.
Bubblr (free) - BubblR is a tool to create comic strips from photos from Flickr.com