The best alternatives to ProdFlow are ProductPlan, ProdPad, and Roadmunk. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of ProdFlow?
Boardy— Get warm intros to investors, customers, and collaborators
Plan, create and share beautiful product roadmaps with Roadmunk. Collaborate with your team to create a visual for the future of your product with multiple views, resources and data sets. Plus, with the ability to publish to PDF, PowerPoint, URL, HTML and PNG; even stakeholders can weigh in on the plan's development.
Gather customer feedback on upcoming product features. Fully open-source, customizable, and free 💜 Share roadmap publically or with a closed set of users. Customers can upvote/downvote, add comments, and get notified when a feature is released.