Gantt.io creates amazing Gantt charts for you in no time. Beautiful templates, a very intuitive and efficient interface, multi-user editing, time-travel as well as a high-res export function allow you to create THE chart that will convince your audience.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
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.
OmniGraffle - OmniGraffle is for creating precise graphics like website wireframes, an electrical system designs, or mapping out software class.
GanttPRO - GanttPRO is online Gantt chart software for project management. CEOs, project managers, and teams use it every day to solve project management challenges.
Moqups - The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project
Online Gantt - A free MS Project alternative for simple gantt charts