This paper adopts a transdisciplinary perspective to studying the use of collaborative technologies for environmental collaboration among diverse stakeholders, mobilised towards creating and achieving shared environmental goals. Environmental collaboration is a complex phenomenon involving a multitude of stakeholders and resources often dispersed across vast geographically, politically and culturally diverse areas. The study contextualises the environmental problem situation in Australia and Thailand, and considers the multifaceted emergence of environmental collaboration enacted by various local Environmental Non-Governmental Organisations (ENGO). A research approach, based on the Actor-Network Theory (ANT) is adopted. By retracing the associations and the complex webs of translations taking place in the environmental actor-networks of diverse stakeholders and collaborative technologies, the study reveals the emerging roles and limitations of collaborative technologies as mediators of eco-mobilisation.