OnSite is a Singapore-based AI startup building a communication platform for the construction and facilities-management sector. It replaces fragmented WhatsApp-style messaging and documentation with a structured, searchable system where workers communicate via voice notes, photos, and text, and the platform automatically organizes that material by project, location, and timeline across multiple languages. Founded by Poh Yong Han (a Rhodes Scholar with an Oxford PhD who grew up in a family renovation business) and Liam Appelson (Yale physics, with carpentry and industrial-design background), OnSite raised S$1.7M (about US$1.3M) in a seed round co-led by Tin Men Capital and Alter Global, with Hustle Fund and Gondor Capital participating. The funding, announced in April 2026, will expand its engineering team and develop the AI platform.