Office 365 Workflow Activities Extensions Kit of 80+ custom actions for SharePoint Designer can be used for creating custom Office 365 workflows and includes extended custom workflow activities for sending e-mails, list processing, permissions processing, dealing with documents, attachments and many other activities.
Virto Office 365 Workflow Scheduler App allows you to add custom schedules for your Office 365 workflows.
The default abilities of Office 365 doesn’t allow users to create timer jobs. Virto Office 365 Workflow Scheduler is a simple solution to run your workflows whenever you want to.
SharePoint Workflow Scheduler allows users to run any workflow automatically within a single SharePoint site collection on a specific date and time (according to a timetable).