Limbs 4 Life - A peak body for Australian amputees.  Very informative.
www.limbs4life.com  

Amputee Coalition of America - Technologies abound.
www.amputee-coalition.org

 

Sailability - Access dinghies Australia-wide
www.sailability.org

Sailors with disAbilities - Try Sail Days, offshore racing & crewing enquiries.
www.sailorswithdisabilities.com

Wheelchair Sports NSW - Wheelchair sports such as Basketball, Tennis etc. throughout NSW.
www.wsnsw.org.au

Amputee Golf NSW - For those who like to swing a club
www.amputeegolfnsw.org.au  

Riding for the Disabled - For those at home on horseback
www.rdansw.org.au