If you're one of the many investors in Australia that operate their own superannuation fund, then you might want to check out the exchange-traded funds (ETFs) in this article.

That's because they give investors access to some of the best companies in the world with very positive long term growth outlook.

This could make them great buy and hold options for investors. Here's what you need to know about these popular funds:

BetaShares Global Cybersecurity ETF (ASX: HACK)

The cybersecurity industry could be a great place to invest your money over the long term. That's because this side of the tech sector is expected to grow materially in the future as demand increases for cybersecurity services.

For example, Betashares highlights that "an estimate of the total addressable market by McKinsey suggests that the cybersecurity market is $1.5-$2.0 trillion globally, and at best only 10% penetrated with a very long runway for growth." This is expected to lead to cybersecurity revenue growing at an annual rate of 10.6% through 2024 to 2028.

This bodes well for the companies held by the BetaShares Global Cybersecurity ETF, which include the leading names in the industry and many up and coming players.

BetaShares Asia Technology Tigers ETF (ASX: ASIA)

Another ASX ETF that could be a great buy and hold option for investors is the BetaShares NASDAQ 100 ETF.

This ETF is filled to the brim with many of the biggest and best companies that the world has to offer. This includes giants such as Apple (NASDAQ: AAPL), Microsoft (NASDAQ: MSFT), Nvidia (NASDAQ: NVDA), and Tesla (NASDAQ: TSLA), to name just four.

Betashares notes that the Nasdaq 100 has outperformed over the last decade. This has been driven largely by the innovation of the 100 companies included in the fund.

The good news is that the fund manager expects this trend to continue in the future, which is why it could be a great long term pick for a self-managed superannuation fund. It explained:

In order for companies to innovate and grow in the 21st century, investment in research and development (R&D) is crucial. The largest 15 companies on the Nasdaq are the biggest R&D spenders, allocating an average of 16.9% of their revenues to R&D over the past 12 months. It has been this spending on innovation in areas like enterprise, cloud computing, cybersecurity, and more recently AI that has ultimately led to underlying growth.