Interactive Brokers has been a major player in the global share trading scene for some time. Interactive Brokers was founded in 1978 and so has been around for a lot longer than some of the newer online brokers in Australia such as Stake, Selfwealth and Superhero.
Australian shares: $6 standard brokerage fee.
US Shares: US$0.005 per share, min $1/max 1% per trade.
I'll also mentioned that they have a separate tiered fee structure, where your brokerage becomes lower the more you trade each month. But this option is more geared towards professional traders.
Pros
Low fees.
Access to both the Australian and US markets for trading shares.
Fractional investing for US shares - for example instead of needing 144 USD to buy 1 share of Tesla, you can use whatever dollar amount you have to purchase a fraction of a share.
Cons
Platform can be difficult to use - targeted at more advanced traders/investors rather than beginners.
Interactive Brokers have been around a while and have remained one of the best options for online brokers. Overall they have some of the lowest fees for trading shares so may be a good option. However, their platform is not geared towards newer investors and even advanced traders/investors will find it can take a while to find their way around.
Other top brokers to choose from: