This Research Note examines the landscape of ESG software providers, who are strengthening and broadening their offerings beyond compliance requirements and carbon accounting into integrated platforms for commercial real estate. This has resulted in a spate of ESG software acquisitions this year, as consolidation accelerates. We highlight 7 key players in the market: osapiens, Deepki, Greenly, Novisto, BuildingMinds, Asuene, and Measurabl. ESG Software Acquisitions & Mergers: Jan to Sept 2026 Key Highlights M&A acceleration with 11 deals over 9 months in 2026 compared with 6 deals in 2025. Acquirors and target companies are primarily startups founded in the last 10 years, the majority of which are headquartered in Europe. Deepki and Asuene stand out for their multiple deal approach over the last two years. Mergers between startups, such as Lookthrough and BuildingMind and Normative and Greenly, create critical mass for the combined entity. 7 key players in the ESG software market are identified: osapiens, deepki, […]