PleaseReview

PleaseReview is a browser-based collaborative review and authoring solution. Every contributor can comment on the same document (both in real-time or asynchronous mode). The service includes deadlines management, email invitations and reminders. It is also possible to review the documents offline. PleaseReview supports MS Word, MS PowerPoint and allows the inclusion of images. PleaseReview costs $55 per month and $270 per year. Free 30-days trial available.