GPL-3.0-or-later AND LGPL-2.1-or-later — independent software & tools
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espeak
Text to speech, software speech synthesizer
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gettext
GNU internationalization (i18n) and localization (l10n) library
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liblouis
Open-source braille translator and back-translator
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mpfi
Multiple precision interval arithmetic library
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oath-toolkit
Tools for one-time password authentication systems