pkg.sopackage field notes

brew / rank 1063

Install mecab with Homebrew

Yet another part-of-speech and morphological analyzer. Version 0.996 via Homebrew; verified 2026-06-16.

install

Additional install commands

macOS

Homebrewverified · 100%
brew install mecab

provider-native install command

overview

Package summary

Yet another part-of-speech and morphological analyzer

Commands and aliases

  • mecab
  • mecab-config

history

Project history and usage

MeCab is a Japanese part-of-speech and morphological analyzer. The official documentation describes it as an open-source engine developed through the Kyoto University Graduate School of Informatics and NTT Communication Science Laboratories joint research unit project.

Project history

MeCab was designed to be independent of language, dictionary, and corpus, using Conditional Random Fields for parameter estimation. Its documentation contrasts this with ChaSen's hidden Markov model and states that MeCab is faster on average than ChaSen, Juman, and KAKASI.

The release history in the official documentation starts with MeCab 0.90 as the initial release on 2006-03-26. Version 0.93 in July 2006 changed the license to a GPL, LGPL, or BSD triple-license model, and later releases added faster dictionary compilation, HMM training support, partial parsing APIs, retraining, and user dictionary cost estimation.

Adoption history

Official downloads separate the engine from dictionaries such as IPA, Juman, and UniDic, and list bindings for Perl, Ruby, Python, and Java. The input package facts show broad package-manager coverage across Homebrew, Debian, Ubuntu, Fedora, MacPorts, and Nix, reflecting MeCab's long-lived role as infrastructure for Japanese NLP.

How it is used

The docs cover direct parsing, wakati output, output-format customization, character-set changes, N-best output, adding words, dictionary format details, unknown-word handling, partial parsing, soft-wakati output, the C/C++ library interface, and script-language bindings. The command-line tools `mecab` and `mecab-config` expose those capabilities to packages and build scripts.

Why package nerds care

MeCab is a classic package-manager NLP dependency: small native engine, separate dictionaries, command-line interface, C/C++ library, and bindings. It is especially important because many downstream Japanese text tools depend on the stable `mecab` executable and dictionary layout rather than embedding an analyzer.

Timeline

  • 2006: MeCab 0.90 initial release.
  • 2006: MeCab 0.93 changes licensing to GPL, LGPL, or BSD.
  • 2012: MeCab 0.994 adds retraining and automatic user-dictionary cost estimation.
  • 2013: MeCab 0.996 fixes iconv linking and adds user-dictionary CSV cost/context generation.

Related projects

  • ChaSen, Juman, KAKASI, IPA dictionary, Juman dictionary, UniDic, mecab-ko.

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

  • narrow executable package without higher-risk signals

Signals

  • metadata:no-higher-risk-signals

Install behavior

  • No Homebrew bottle metadata was recorded.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

CommandKindExposureNote
mecabexecutableindexed executableDiscovered from the local executable index.
mecab-configexecutableindexed executableDiscovered from the local executable index.

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-08-03
manager version0.996
manager updated2026-06-16
local dataunknown
upstreamnot available
latest detectednot detected
  • okNo freshness warnings were generated.

install metadata

Package metadata

Package keybrew:mecab
Version0.996
Package managerHomebrew
Homepagehttps://taku910.github.io/mecab/
Last updated2026-06-16T20:46:20Z
Pulseupdated
Bottlenot recorded
Servicenone declared

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Used sources

  • Geiger risk classifier
  • Nucleus package database
  • curated package history
  • pkgdb category and tag curation