Penpot is the first open-source design & prototyping tool for product teams, that allows full collaboration between designers and developers thanks to features such as Flex Layout and Code Inspect.
- - Penpot is the most popular Web-based & Self-Hosted alternative to Core2D.
- - Penpot is the most popular Open Source & free alternative to Core2D.
Pencil is a standalone app that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features.
- - Pencil Project is the most popular Windows, Mac & Linux alternative to Core2D.
Pencil Project Features
Draw lets you produce anything from a quick sketch to a complex plan, and gives you the means to communicate with graphics and diagrams. With a maximum page size of 300cm by 300cm, Draw is a an excellent package for producing technical drawings, general posters, and much else.
LibreOffice - Draw Features
Dia is a GTK+ based diagram creation program for Linux, Unix, Mac OS X and Windows released under the GPL license.
yEd is a powerful diagram editor that can be used to quickly create diagrams manually or import external data for analysis and auto-magically arrange even large data sets by just pressing a button. You can use yEd to quickly create flow charts, BPMN and UML diagrams...
yEd Graph Editor Features
PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others.
- - PlantUML is the most popular Android alternative to Core2D.
Google Drawings, part of Google Drive, allows users to collaborate creating, sharing, and editing images or drawings. It can be used for creating charts, diagrams, designs, flow-charts, etc.
OmniGraffle can help you make eye-popping graphic documents—quickly—by providing powerful styling tools, keeping lines connected to shapes even when they’re moved, and magically organizing diagrams with just one click.
- - OmniGraffle is the most popular iPad alternative to Core2D.
- - OmniGraffle is the most popular commercial alternative to Core2D.
Draw, part of the Apache OpenOffice suite, is a graphics editor that gives you the tools to communicate with visuals and diagrams. With a maximum page size of 300cm by 300cm, Draw is powerful tool for posters, graphs, charts, and more.
Apache OpenOffice Draw Features
Wireflow is free, online, real-time collaborative, open source tool for creating beautiful user flow prototypes.
Creating flowcharts, organizational charts, business diagrams, science illustration, network diagrams, mind map and lots more.
Wondershare EdrawMax Features