Font meta-family, multiple styles, for Japanese, English, and Korean, made with Metafont. Full coverage of hiragana, katakana, hangul, and Latin. Partial coverage of grade-school kanji. Also includes IDSgrep, a tool for querying kanji databases...
Operating System: Linux, OS Independent Precompiled OTF fonts work with recent versions of all currently-popular word processing and typesetting systems - including those used by Linux, MacOS, and Windows.
Building the fonts from source requires a Linux or Linux-like command-line environment, Perl, GNU Make, a C compiler, and Metapost (included in most TeX distributions). Other resources recommended for build, or required for optional features, include XeLaTeX, Expect, KANJIDIC2, a Prolog interpreter, and a multi-CPU computer.
IDSgrep requires a C compiler, Perl, and (not strictly required but strongly recommended) the KanjiVG database, a Tsukurimashou build environment, or both. Recompiling the IDSgrep PDF documentation requires XeLaTeX and the Tsukurimashou Mincho font, which is included in the precompiled package.