One of the best advertisements for Flow web-based project and task management software is knowing that it was originally developed as an internal tool for a large company. In other words, this tool has been thoroughly tried, tested and tweaked. Flow promises ease of use, and reviews reflect this. Pricing is based on the number of users, with everyone getting every feature. You can use Flow on your desktop, iPad, iPhone or Android device as well as on Slack. Manage, archive and export your team projects without unnecessary frills.