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View E4SMA's top competitors like Aon, B Lab, and CDP.

WSP
WSP is one of the world’s leading engineering, science and infrastructure solutions firms, uniting its multidisciplinary expertise to shape communities to advance humanity. From local beginnings to a globe-spanning presence today, WSP operates in over 50 countries and employs approximately 83,000 professionals, known as Visioneers. Together they pioneer solutions and deliver innovative projects in the transportation, infrastructure, environment, building, energy, water, and mining and metals sectors. WSP is publicly listed on the Toronto Stock Exchange (TSX:WSP).
Montreal, CA
Private
$10.6B Revenue
http://wsp.com
73.5K Employees
Aon
We exist to shape decisions for the better — to protect and enrich the lives of people around the world. Through actionable analytic insight, globally integrated Risk Capital and Human Capital expertise, and locally relevant solutions, our colleagues provide clients in over 120 countries with the clarity and confidence to make better risk and people decisions that help protect and grow their businesses.
UK
Private
$15.7B Revenue
http://www.aon.com
94.2K Employees
CDP
As the founder of environmental reporting, we believe in transparency and the power of data to drive change. Partnering with leaders in enterprise, capital, policy and science, we surface the information needed to enable Earth-positive decisions. We supported more than 22,100 companies and over 1,000 cities, states and regionsdisclose their environmental impacts in 2025. Financial institutions with more than a quarter of the world’s institutional assets use CDP data to help inform investment and lending decisions. Our team is truly global, united by our shared desire to build a world where people, planet and profit are truly balanced. To meet the scale and speed of today’s environmental challenges and market expectations, CDP is becoming two separate organizations – a commercial entity, CDP, and a non-profit CDP Foundation. They will be united in shared ambition: to surface new information, enabling Earth-positive decisions to protect future generations. More information to follow.
UK
Private
$30.1M Revenue
http://www.cdp.net
1.2K 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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