Gettext PO and MO Binary Compiler is a pure-Python software localization workbench for compiling GNU Gettext translation catalogs (.po) into machine object binaries (.mo), decompiling .mo binaries back into editable .po files, extracting .pot templates from source code, and auditing translation quality. An independent Linux alternative to VisualLocalize, it provides developers and translators with an integrated desktop environment for Gettext localization workflows.

Key Features:

• Pure-Python PO to MO Compiler & Decompiler: Compiles UTF-8 .po catalogs with contexts (msgctxt) and plural forms into standard 0x950412de magic header .mo binaries, and decompiles existing Linux .mo catalogs back into clean .po text.
• Multi-Language POT Source Extractor: Parses Python AST and JavaScript/TypeScript/C/C++ source trees for gettext, _, dgettext, ngettext, and pgettext calls with file:line references and format flag detection.
• Interactive Plural-Forms Expression Tester: Evaluates C-style Plural-Forms expressions across integer ranges (including multi-form Slavic, Romance, East Asian, and Arabic rules) to preview exact msgstr[index] selection.
• Translation Quality Auditor: Detects untranslated entries, fuzzy markers, missing plural slots, format placeholder mismatches, and newline discrepancies.

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by AIT AG.