KanbanFlow - KanbanFlow is a Lean project management tool allowing real-time collaboration between team members. Supports the Pomodoro technique for time tracking.
Kanbanote - Turn your Evernote into Trello
Kantree - Kantree is an adaptable and intuitive project manager for the enterprise.
Trellinator - Automate Trello with Google Apps script
Kanban Tool - Simple and effective online application for visual project management.
Trelloist - A Kanban board for Todoist