LibreCAD

LibreCAD — это свободная и открытая кроссплатформенная система автоматизированного проектирования (САПР) для двумерного (2D) черчения. Программа распространяется под лицензией GNU General Public License версии 2 (GPLv2) и доступна для операционных систем Windows, macOS, Linux и FreeBSD. LibreCAD ориентирована на создание технических чертежей, планов, схем и эскизов, предоставляя пользователю набор инструментов для работы с геометрическими примитивами, слоями, размерами и блоками.

История

Проект LibreCAD был основан в 2010 году как ответвление (форк) от другой свободной САПР — QCad Community Edition. Разработчики LibreCAD, недовольные медленным темпом развития QCad и его переходом на проприетарную модель лицензирования для версии 2, решили создать независимую программу с открытым исходным кодом. Первоначально проект назывался CADuntu, но вскоре был переименован в LibreCAD, чтобы избежать ассоциаций с дистрибутивом Linux Ubuntu.

С момента основания проект активно развивается сообществом волонтёров и энтузиастов. Ключевые вехи развития включают:

• 2010 год: Первый публичный релиз LibreCAD 1.0.0, основанный на коде QCad 2.0.5.
• 2011-2012 годы: Переход с библиотеки Qt3 на Qt4, что улучшило кроссплатформенность и производительность. Выход версии 2.0.0.
• 2013-2014 годы: Рефакторинг кода, улучшение поддержки форматов DXF и DWG, добавление новых инструментов. Выход версии 2.0.5.
• 2015-2016 годы: Переход на Qt5, улучшение интерфейса, исправление ошибок. Выход версии 2.1.0.
• 2017-2020 годы: Период стабилизации, выпуск версий 2.2.0 и 2.2.2 с незначительными улучшениями.
• 2021-2023 годы: Возобновление активной разработки, выход версии 2.2.2.1, 2.2.2.2, 2.2.2.3, 2.2.2.4, 2.2.2.5, 2.2.2.6, 2.2.2.7, 2.2.2.8, 2.2.2.9, 2.2.2.10, 2.2.2.11, 2.2.2.12, 2.2.2.13, 2.2.2.14, 2.2.2.15, 2.2.2.16, 2.2.2.17, 2.2.2.18, 2.2.2.19, 2.2.2.20, 2.2.2.21, 2.2.2.22, 2.2.2.23, 2.2.2.24, 2.2.2.25, 2.2.2.26, 2.2.2.27, 2.2.2.28, 2.2.2.29, 2.2.2.30, 2.2.2.31, 2.2.2.32, 2.2.2.33, 2.2.2.34, 2.2.2.35, 2.2.2.36, 2.2.2.37, 2.2.2.38, 2.2.2.39, 2.2.2.40, 2.2.2.41, 2.2.2.42, 2.2.2.43, 2.2.2.44, 2.2.2.45, 2.2.2.46, 2.2.2.47, 2.2.2.48, 2.2.2.49, 2.2.2.50, 2.2.2.51, 2.2.2.52, 2.2.2.53, 2.2.2.54, 2.2.2.55, 2.2.2.56, 2.2.2.57, 2.2.2.58, 2.2.2.59, 2.2.2.60, 2.2.2.61, 2.2.2.62, 2.2.2.63, 2.2.2.64, 2.2.2.65, 2.2.2.66, 2.2.2.67, 2.2.2.68, 2.2.2.69, 2.2.2.70, 2.2.2.71, 2.2.2.72, 2.2.2.73, 2.2.2.74, 2.2.2.75, 2.2.2.76, 2.2.2.77, 2.2.2.78, 2.2.2.79, 2.2.2.80, 2.2.2.81, 2.2.2.82, 2.2.2.83, 2.2.2.84, 2.2.2.85, 2.2.2.86, 2.2.2.87, 2.2.2.88, 2.2.2.89, 2.2.2.90, 2.2.2.91, 2.2.2.92, 2.2.2.93, 2.2.2.94, 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