Skwirk
Skwirk helps busy home educators cover the Australian curriculum whilst fostering independent learning and recording student progress. Skwirk is easy to navigate through subject, topic and chapter and can be used as an integrated program for six key subject areas or as a springboard for further discussion and revision. https://www.skwirk.com.au/home-educators#pricing_table
Khan Academy
Free, world-class, personalised learning for anyone, anywhere. Focuses on maths and science but also has courses in English, humanities, arts, economics and thinking skills. https://www.khanacademy.org/