helix-editor/nucleo

Health v2 · maintenance only

Adoption not part of the score

1492 stars · 61 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Nucleo is a high-performance fuzzy matcher library for Rust, filling the same role as fzf and skim but with a faster matching algorithm and better Unicode handling. It offers both a fully managed fuzzy picker (nucleo) and a standalone matcher crate (nucleo-matcher), and powers the Helix editor.

Use cases

• fuzzy find files in a terminal picker
• filter large lists with low-selectivity patterns quickly
• replace fzf or fuzzy-matcher in a Rust application
• fuzzy match non-ASCII and emoji text correctly
• highlight matched grapheme indices in a fuzzy search UI
• build a command palette with fzf-compatible ranking

When to choose

• you need fzf-quality scoring as an embeddable Rust library
• you match patterns against very large item sets where speed matters
• you need correct Unicode grapheme handling and case insensitivity
• you want a plug-and-play picker like the one in Helix

When to avoid

• you need a standalone CLI tool rather than a library
• you require a stable 1.0 API for the high-level crate
• your project is not in Rust and you cannot use FFI

Facets

library · maturity active

search-engine parser developer-tools text-editors performance rust cross-platform fuzzy-matching fuzzy-finder fzf-alternative smith-waterman unicode-aware helix-editor algorithms

Member repositories

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