Teamwork is an Irish, privately owned, developer-led web-based company headquartered in Cork, Ireland. Teamwork creates task management and team collaboration software, and its three main products relate to project-management, customer support, and real-time internal communications.

Trello is a web-based Kanban-style list-making application. Originally made by Fog Creek Software in 2011, it was spun out to form the basis of a separate company in 2014 and later sold to Atlassian in January 2017.