the official home page of the apache openoffice open source project, home of openoffice writer, calc, impress, draw and base.

those free，中文名称“那些免费的砖”，是一个致力于发现互联网免费可商用资源的网站，涵盖设计、前端开发和生产里应用软件等领域，并提供免费字体下载、免费软件下载。是设计师、前端开发工程师以及媒体工作者特别喜欢的网站。

smartdraw is a unified visual app that combines diagramming, whiteboarding and data into one enterprise-friendly solution.

professional-grade 2d cad software that can be used to create, edit, view, and markup any kind of 2d drawing or dwg file.

gstarcad is well-known alternative cad software. provided 2d/3d design and drafting cad software and solutions for multiple industries, such as architectural and mechanical engineering. all in .dwg file format.

acad replacement. powerful 2d and 3d design software low priced, useful for cad field & concept sketch, electrical schematics, building construction, aec architectural, civil, gis, topography, structural, mechanical and industrial engineering, mcad mechanical. ifc,step,iges,shp,pdf import

design and host maps with openstreetmap vector tiles and open-source tools. maps are compatible with leaflet, maplibre gl sdks, gis, wmts/wms, xyz map tiles, etc.

autodesk builds software that helps people imagine, design and make a better world.

extensive wiki-style reference lists of keyboard shortcuts/hotkeys.