Nifty - Manage projects, work, and communications in one place.
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.
Flow - Stop managing projects from your inbox.
Pneumatic - Pneumatic is an SaaS workflow management system designed to make business process management easy and accessible to everyone. Pneumatic emphasises ease of use, iterative development and continuous improvement of business processes.
Workflow86 - All-in-one platform for automating complex workflows and business operations
Metatask - Put your business processes on autopilot. Automate every business workflow: vacation requests, expenses approvals, order processing and any other.