Australia’s digital sector has seen rapid growth since the pandemic accelerated digital transformation. Technology, fintech and artificial intelligence gained prominence as demand rose across business, banking and education. This shift positioned the tech sector as one of the strongest forces in Australia’s economy in 2025.
The following are Australia’s biggest ASX-listed tech companies, ranked by market capitalisation.
1. Block (ASX:XYZ)
Block holds the top spot with a market cap of $40.07 billion. The company is headquartered in California and entered the ASX through its acquisition of Afterpay. Block includes Square, Cash App, Afterpay, TIDAL, Bitkey and Proto. Square enables tap-based transactions. Cash App allows money transfers and investments. TIDAL supports digital content streaming. Bitkey offers a Bitcoin wallet. Proto operates Bitcoin mining services. Block reported US$2.25 billion in Q3 2024 gross profit, up 19 percent year-over-year.
2. REA Group (ASX:REA)
REA Group ranks second with a market cap of $32.52 billion. The company runs online real estate advertising platforms across North America and Asia. In September 2024, REA acquired 19.9 percent of Athena Home Loans. REA partnered with Athena to launch Mortgage Choice Freedom in June 2023. The company reported $873 million in H1 FY2025 revenue, up 20 percent year-on-year.
3. WiseTech Global (ASX:WTC)
WiseTech Global stands third with a $30.81 billion market cap. Its CargoWise platform supports 17,000 clients across 174 countries. CargoWise streamlines customs, warehousing, and freight processes. WiseTech acquired Blume Global and Envase Technologies in 2023. In December 2024 and January 2025, it acquired BSM Global and ImpexDocs. WiseTech reported $1.04 billion in FY2024 revenue, up 28 percent year-on-year.
4. Xero (ASX:XRO)
Xero ranks fourth with a $25.53 billion market cap. It provides cloud-based accounting software with over 4.2 million subscribers. Xero integrates with PayPal and Stripe. Clients include Australia’s four major banks and others globally. Xero posted NZ$996 million in H1 FY2025 operating revenue, up 25 percent year-on-year.
5. Computershare (ASX:CPU)
Computershare holds fifth place with a $22.07 billion market cap. It operates share registry and corporate trust services. The company manages over 75 million customer records and employs 14,000 staff. Computershare acquired Wells Fargo Corporate Trust in 2021. In September 2023, it agreed to acquire Solium Capital UK’s European business. It acquired ingage IR in December 2024. In H1 FY2025, the company reported US$1.5 billion in revenue, up 6.4 percent.
6. CAR Group (ASX:CAR)
CAR Group ranks sixth with a $12.89 billion market cap. It operates carsales.com in Australia and owns platforms in Chile, South Korea, Brazil and the US. In January 2025, CAR Group exited the Australian Tyres business. This move boosted its financial standing. It reported $579 million in H1 FY2025 revenue, up 9 percent.
7. TechnologyOne (ASX:TNE)
TechnologyOne stands seventh with a $10.25 billion market cap. It provides SaaS enterprise resource planning software across multiple sectors. Clients span education, government, and healthcare in Australia, New Zealand and the UK. In 2024, TechnologyOne posted $515.4 million in revenue, up 17 percent. It marked the company’s 15th consecutive year of growth.
8. NEXTDC (ASX:NXT)
NEXTDC ranks eighth with a market cap of $8.79 billion. It runs 13 data centres in Australia, New Zealand, Japan and Malaysia. NEXTDC supports over 1,800 customers with cloud infrastructure needs. It partners with Amazon Web Services, Microsoft Azure, Google Cloud and others. NEXTDC won the 2024 Australian Data Centre Service Company of the Year award. In FY2024, it recorded $404.3 million in revenue, up 25 percent.
9. SEEK (ASX:SEK)
SEEK stands ninth with a $7.48 billion market cap. Based in Melbourne, it develops online employment platforms across China, Mexico, New Zealand and Brazil. In H1 FY2025, SEEK reported $536.2 million in revenue, down 4 percent. Job ad volumes fell 14 percent during the period.
Australia’s Tech Growth Outlook
Australia’s top tech stocks reflect the country’s commitment to digital transformation. With innovation in fintech, AI and SaaS, these firms are positioned to drive further economic growth. Investor confidence remains strong amid continued expansion and acquisitions in global markets.
