ConsoleAppVisuals was my first real project, and the first one that turned out useful to anyone but me. I built it in college, when every C# console assignment ended up reimplementing the same prompt loops, the same menu drawing, the same status footers. Once the library was clean enough, teammates started pulling it into their own work, and the assignments got smaller for everyone.
It is also where I learned what programming looks like outside an exercise: designing a public API, thinking about backward compatibility, writing tests for code other people would rely on. Three-plus years on, it still gets issues from people building real apps, and every breaking change since the first public release goes through a deprecation path.
Stack: C# (.NET), xUnit, GitHub Actions Code: github.com/MorganKryze/ConsoleAppVisuals