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.
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.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
GanttPRO - GanttPRO is online Gantt chart software for project management. CEOs, project managers, and teams use it every day to solve project management challenges.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Online Gantt - A free MS Project alternative for simple gantt charts
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.