Aeon Timeline - "The timeline tool for creative thinking. Capture, create and explore ideas."
GanttPRO - GanttPRO is online Gantt chart software for project management. CEOs, project managers, and teams use it every day to solve project management challenges.
Preceden - Preceden makes it easy to build simple, powerful timelines
Instagantt - Instagantt is a powerful and intuitive Gantt chart tool to enable teams to plan, manage and visualize their projects easily. Manage your schedules, tasks, timelines, and workload like a Pro. Try it for free.
ChronoFlo Timeline Maker - Create beautiful interactive timelines that you can share online
DHTMLX Suite - DHTMLX Suite offers JavaScript UI library for building cross-browser web and mobile applications.