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View Third Ecology's top competitors like Aurecon, Biosis Pty Ltd, and Ecoteam Australia.

Aurecon
Aurecon is an Asia Pacific engineering consultancy that believes the world needs people who can engineer possibilities. Operating across Australia, New Zealand and Asia, Aurecon brings ideas to life with clients to deliver the infrastructure and assets communities depend on. An Australian company that calls Asia Pacific home, Aurecon delivers better outcomes across energy, water, environment, digital infrastructure, resources, transport, social infrastructure and defence through a single connected team. A leadership-owned company, with no external shareholders, Aurecon aligns its interests with those of its clients. Aurecon is a partner who thinks differently, delivers on its promises and builds deep client relationships. The Aurecon Way. For more information about Aurecon, please visit www.aurecongroup.com.
Docklands, AU
Private
$607.8M Revenue
http://www.aurecongroup.com
8.7K Employees
The Green Building Council of Australia (GBCA) was established in 2002 to develop a sustainable property industry in Australia and drive the adoption of green building practices through market-based solutions. To drive the transition of the Australian property industry towards: -Sustainability - by promoting green building programs, technologies, design practices and operations -Integration - of green building initiatives into mainstream design, construction and operation of buildings. To achieve these objectives, the GBCA runs the Green Star environmental rating system, education and advocacy efforts in sustainable building practices, and events on the national and international levels.
Sydney, AU
Private
$34.5M Revenue
http://www.gbca.org.au
155 Employees
Sustainability Victoria
Sustainability Victoria closed on 30 June 2026 following the Victorian Government's response to the Independent Review of the Victorian Public Service. For more than 20 years, Sustainability Victoria worked with Victorians to reduce waste, improve recycling and support the transition to a circular, low-emissions economy. This page is retained as a public archive and is no longer being updated or actively monitored. For ongoing updates on Victoria's environment, sustainability, energy and climate initiatives, follow the Department of Energy, Environment and Climate Action (DEECA).
Melbourne, AU
Private
$21M Revenue
http://sustainability.vic.gov.au
115 Employees
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
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