Doit.im - Doit.
Float - The leading resource management software for agencies, studios, and firms. With a simple, drag and drop interface and powerful editing tools, Float saves you time and keeps projects on track.
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
When I Work - When I Work is an employee scheduling and communication app using the web, mobile apps, text messaging, social media, and email.
TickTick - TickTickis a cross-platform to-do list app & task manager helps you to get all things done and make life well organized.
ResourceGuru - The fast, simple way to schedule people, equipment, and other resources online.