Best Free and Open Source Alternatives to Intuit Mint

Mint is a personal financial management website. The service offers personalized insights, custom budgets, spend tracking, and monitoring. What are the best free and open source desktop alternatives?

While Intuit has a GitHub presence with over 100 repositories for numerous open source projects, none of these repositories offer any substantial desktop software. Instead, the repositories focus on tools and libraries for developers. None of these projects appear to have attracted significant interest from the open source community.