When comparing yEd vs Pencil Project, the Slant community recommends yEd for most people. In the question“What are the best flowchart / diagram softwares?” yEd is ranked 4th while Pencil Project is ranked 9th. The most important reason people chose yEd is:
With automatic layout you get great looking diagrams with very little effort. yEd has the most versatile and most complete collection of automatic layout algorithms.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Automatic Layout
With automatic layout you get great looking diagrams with very little effort. yEd has the most versatile and most complete collection of automatic layout algorithms.
Pro Completely free
Pro Multi-platform
Runs on Windows, Linux and Mac OSX. There also is a Web application.
Pro Inter-page linking
Pro Pencil Project as a Firefox extension
Pro Export to SVG and PDF
Pro GUI prototyping
Can be used for GUI (Graphical User Interface) prototyping.
Cons
Con Clumsy UI
Con Not free-as-in-freedom
Not released under an open-source license.