Based on our record, Plan.io seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Plan.io — Project Management with Repository Hosting and more options. Free for 2 users with 10 customers and 500MB Storage. - Source: dev.to / almost 3 years ago
Taiga - Project management platform for agile developers & designers
UserVoice - UserVoice integrates easy-to-use feedback, helpdesk, and knowledge base management tools in one platform that empowers users to speak and companies to understand.
TargetProcess - Agile Project Management Web Application
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Zendesk - Zendesk is a beautiful, lightweight help-desk solution.