Some of the sites you see offering small business grants in Australia are indeed part of a program to rob people of their money. However, others are genuine government programs. There are also companies that tell you they can guarantee getting small business grants from the government, including that of Australia. However, they too are a program as no one can offer such a guarantee.
You can also take advantage of the Small Business Startup Assessment Tool below and see the tools and resources you need to succeed at launching your business. It takes just a minute and will also tell you if there may be any funding programs available.