OmniOutliner - OmniOutliner is a writing app for collecting information, outlining ideas, adding structure to any sort of writing.
Preceden - Preceden makes it easy to build simple, powerful timelines
Dynalist - Dynalist is a web app that lets you break down and organize your thoughts in the format of lists.
Timeline - Timeline is a cross-platform application for displaying and navigating events on a timeline.
Outlinely - Indispensable information organization tool for knowledge workers.
Tiki-Toki - Tiki-Toki is web-based timeline software for creating beautiful interactive timelines that you can share on the web.