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icu4c@78

brew install icu4c@78 v78.3 Unicode-3.0 keg-only

C/C++ library providing Unicode support, text processing, and internationalization (i18n) utilities.

Why you might care

ICU4C is the de facto standard for robust Unicode handling, collation, and locale-aware text operations in C/C++ projects. This keg-only version 78 coexists with macOS's libicucore; use it when you need the full ICU feature set (regex, transliteration, calendar, timezone handling) beyond what the system provides. Primary dependency for applications requiring standards-compliant internationalization.

Categories

library unicode internationalization

Alternatives

libunistring glib boost
175.9k
30-day installs · #14
657.5k
90-day · #10
1.7M
365-day · #23

Links

Keg-only reason

:shadowed_by_macos — macOS provides libicucore.dylib (but nothing else)

Blurb generated by claude-haiku-4-5 on today.

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  "deprecation_reason": null,
  "desc": "C/C++ and Java libraries for Unicode and globalization",
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  "enrichment_fetched_at": "2026-06-20T23:38:46+00:00",
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  "homepage": "https://icu.unicode.org/home",
  "homepage_og_description": "News\n2026-03-17: ICU 78.3 is now available \u2014 releases/tag/release-78.3 \u2014 Maven: com.ibm.icu / icu4j / version 78.3\nThis is a maintenance release. It supersedes ICU 78.1 and 78.2.\n\nICU 78 updates to Unicode 17 (blog), including new characters and scripts, emoji, collation \u0026 IDNA changes, and",
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  "homepage_title": "ICU - International Components for Unicode",
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  "last_seen": "2026-06-20T23:34:18+00:00",
  "license": "Unicode-3.0",
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  "versioned_formulae": [
    "icu4c@77",
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    "icu4c@75"
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  "why_use_this": "ICU4C is the de facto standard for robust Unicode handling, collation, and locale-aware text operations in C/C++ projects. This keg-only version 78 coexists with macOS\u0027s libicucore; use it when you need the full ICU feature set (regex, transliteration, calendar, timezone handling) beyond what the system provides. Primary dependency for applications requiring standards-compliant internationalization."
}