Open Source Flowchart Software

mermaid is a JavaScript-based diagram and flowchart generating tool that uses markdown-inspired text for fast and easy generation of diagrams and charts. Forget about using heavy tools to explain your code. mermaid greatly simplifies documentation with its simple markdown-like script language, and offers a great range of diagram and chart options. The latest version of mermaid comes with a number of bug fixes and enhancements, as well as a new diagram type, entity relationship diagrams. Its range of available diagrams include flowcharts, sequence diagrams, gantt diagrams and more, with new ones continuously being developed.

Pencil is built for the purpose of providing a free and open-source GUI prototyping tool that people can easily install and use to create mockups in popular desktop platforms. The latest stable version of Pencil is 3.1.0 which contains stability fixes and many new features. More details can befound in the releaste notes. Pencil provides various built-in shapes collection for drawing different types of user interface ranging from desktop to mobile platforms. Starting from 2.0.2, Pencil is shipped with Android and iOS UI stencils pre-installed. This makes it even easier to start protyping apps with a simple installation. Starting from 2.0.2 Pencil has even more shape collections included by default. The list of built-in collections now includes general-purpose shapes, flowchart elements, desktop/web UI shapes, Android and iOS GUI shapes.

ioDraw is a free online drawing software, which is used to make flow chart, mind map, Gantt chart, whiteboard, mermaid, poster, and more—no registration required. It also features AI-generated charts.

UCCVisio makes it easy to create various types of diagrams, including flowcharts, organizational charts, mind maps, network diagrams, floor plans, family tree diagrams, business model diagrams, flyers, certificates, and more. Charts - Charts and graphs are visual representations of information. They are useful for documenting facts, drawing plans and capturing ideas, as well as enhancing communication, learning and productivity. UCCVisio is a set of 100% free drawing software provided by UCanCode software company!

E-XD++ Diagram Graphics Control is a 100% C++ / .NETbased Vector Editor, it ships with complete source codes, it contains the most popular vector graphics design, editing capabilities features. http://www.ucancode.net From the first version of E-XD++, it already has the full features on Visio Style flowchart Vector Editing, the current version of E-XD++ has performed its functions to extreme, basically, if you want to build any very professional Visio -Like flowcharts, network diagrams based applications, E-XD++ will be the best choice. It has almost all the features of the latest edition of Microsoft Visio. It supports SVG Importing and Exporting. DXF Importing and Exporting, XML Loading and Sving, ArcGis Shape Loading And Sving. The VBScript & JavaScript is used for action controlling of any shapes on the canvas. E-XD++ Vector Graphics Solution is similar to latest edition of ConcetpDraw or SmartDraw, it has many hundreds features on vector graphics drawing, editing, printing

From the first version of E-XD++, it already has the full features on Visio Style flowchart Vector Editing, the current version of E-XD++ has performed its functions to extreme, basically, if you want to build any very professional Visio -Like flowcharts, network diagrams based applications, E-XD++ will be the best choice. http://www.ucancode.net It has almost all the features of the latest edition of Microsoft Visio. It supports SVG Importing and Exporting. DXF Importing and Exporting, XML Loading and Sving, ArcGis Shape Loading And Sving. The VBScript & JavaScript is used for action controlling of any shapes on the canvas. E-XD++ Vector Graphics Solution is similar to latest edition of ConcetpDraw or SmartDraw, it has many hundreds features on vector graphics drawing, editing, printing. It has more than 30 kind of link line styles, and has full features on drawing and editing any kind of network diagram, with automatic graph layout.