Re:Show HN: Ferrite – Markdown editor in Rust with native Me...
by OlaProis on Sunday January 11, 2026 @06:36AM
(#46574748)
Small correction: Ferrite uses egui (by Emil Ernerfeldt), not anything from Zed. Different ecosystem entirely.
- Zed uses their own gpui framework
- Ferrite uses egui — an immediate-mode GUI library
egui is great for rapid development but has limitations. The v0.3.0 custom editor widget is specifically because egui's built-in TextEdit blocks features like proper multi-cursor and code folding. We're not getting much "for free" there — the Mermaid renderer, syntax highlighting integration, and view synchronization are all custom.
That said, egui definitely accelerated the initial UI work. Credit where due!
- Zed uses their own gpui framework - Ferrite uses egui — an immediate-mode GUI library
egui is great for rapid development but has limitations. The v0.3.0 custom editor widget is specifically because egui's built-in TextEdit blocks features like proper multi-cursor and code folding. We're not getting much "for free" there — the Mermaid renderer, syntax highlighting integration, and view synchronization are all custom.
That said, egui definitely accelerated the initial UI work. Credit where due!