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Generate lexicographically sortable keys for reorderable lists, CRDTs, and collaborative editing. Single-file library, no dependencies, base62 by default

4 starsC

An embeddable fractional indexing library in C

by marcobambini·Mar 12, 2026·3 points·2 comments
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AI Analysis

●●SolidNiche GemBig Brain

Single-file C with zero dependencies — perfect for embedded or minimal builds.

Strengths
  • •Two-file implementation (header + C) drops into any project without build complexity.
  • •Base62 encoding with variable-length integers handles arbitrary precision between keys.
  • •Standard lexicographic comparison works with SQL ORDER BY and strcmp out of box.
Weaknesses
  • •Fractional indexing libraries already exist in JavaScript, Rust, and other languages.
  • •C audience is narrower than higher-level language implementations.
Target Audience

C developers, embedded systems engineers, collaborative editing tool builders

Similar To

fractional-indexing (npm) · Automerge · Yjs

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