Cytofeather: A free browser-based flow cytometry app built with Codex/Claude Code
arjunrajlab · x · 2026-09-08
Jonas Koeppel released Cytofeather, a lightweight, fully browser-based flow cytometry analysis app built entirely with AI coding tools like Codex and Claude Code — a free alternative to expensive commercial software.
Key features
- Loads FCS/CSV files locally with no upload or setup; data never leaves the device
- Polygon/rectangle gating with gate hierarchy, plus applying gates across samples
- Manual fluorescence spillover compensation matrix, statistics export to CSV
- Exports publication-ready PNG/PDF (custom size/resolution/dark mode) and CSV stats
- Pseudocolor density plots, Viridis/Plasma palettes, linear/log axes, grid and overlay views, workspace save/load
The author's takeaway: AI coding tools now let scientists build free, enjoyable versions of domain software on their own — a trend spreading fast in biology.
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