When comparing Pencil Project vs Coggle, the Slant community recommends Pencil Project for most people. In the question“What are the best flowchart / diagram softwares?” Pencil Project is ranked 9th while Coggle is ranked 17th.
Specs
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Pros
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.
Pro Supports Markdown (their own variant)
Markdown is a plain text formatting syntax designed so that it can optionally be converted to HTML using a tool by the same name.
Pro Collaborative
Coggle allows inviting friends and colleagues to work collaboratively on notes and diagrams in real-time.
Pro Pretty diagrams
No effort to create beautiful diagrams.
Pro Supports LaTeX
LaTeX is a document preparation system and document markup language. It is the de facto standard for the communication and publication of scientific documents.
Pro Allows easy color-coding of paths
Pro Versioning support
Enter history mode to view all changes to a diagram over time, and make a copy from that point.
Pro Optional Chrome store App
Pro Free
Pro Lots of export options
Exports to PDF, image, plaintext and .mm files.
Cons
Con Tree relations only; no non-parent links
Coggle's model allows a node to have multiple children, but only one parent, and no other connections of any sort.
Con Unconventional note taking style
Coggle is a mind mapping application, not a traditional text based note storage platform.