Microsoft/Flint-Chart
Microsoft Flint-Chart is an open-source charting library developed by Microsoft for creating interactive data visualizations. It provides a range of chart types and customization options for use in web applications.
Background
- Flint is an open-source charting library for .NET developers, created by Microsoft to make it easier to build financial and scientific charts in applications like Excel or custom Windows dashboards.
- It focuses on high-performance rendering of large datasets—scenarios where standard charting controls (e.g., Windows Forms Chart or WPF Toolkit) slow down or crash.
- The library uses hardware-accelerated graphics (DirectX via Win2D) to handle millions of data points smoothly, with features like real-time updates, pan/zoom, and annotation overlays.
- This matters because .NET lacked a free, modern, performant charting option tuned for finance/trading and engineering work; most alternatives were either expensive commercial controls (e.g., SciChart, LightningChart) or outdated built-in components.
- Microsoft released it as a community-driven project on GitHub (not an official product), so it receives updates from volunteers rather than a dedicated team.