Ambleside Online (PreK-12)
The curriculum in free and a lot of the books are also. Some books need to be bought or use the library.
Simply Charlotte Mason (PreK-12)
Free curriculum Guide, books will need to be bought.
Core Knowledge (PreK-8)
Free Teacher Guides, Downloads & Forms
Charlotte Mason Help (PreK-6)
Free curriculum very similar to Ambleside Online.
Classical Christian Homeschooling
Free except the books
Milestones Academy
Similar to Ambleside but directed to LDS families. I imagine anyone could use it with a little tweaking.
Sonlight
You don't need to buy the instructor's guide. You can use the booklist as a guide and get the books at the library or used.
Tanglewood Education (1st-8th)
Classical House of Learning
FREE classical literature guides following a 4-year history cycle.
The Puritan's Homeschool Curriculum (K-12)
An amazingly large and in-depth collection of homeschool curriculum with a reformed Biblical perspective. There are over 100 full length texts in history, government, home economics, science & technology, literature, art and much more -- all downloadable in PDF format.
Education is an Atmosphere, a Discipline, a Life.
