When comparing Pidoco vs Diagrams.net, the Slant community recommends Diagrams.net for most people. In the question“What are the best mockup and wireframing tools for websites?” Diagrams.net is ranked 6th while Pidoco is ranked 8th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to use
Pidoco has a simple, intuitive drag&drop interface. Context menus and context-sensitive toolbars make editing super quick.
Pro Lots of dynamic UI elements and icons
Pidoco offers a large library of 400+ interactive interface elements as well as an extensive set of icons as building blocks.
Pro Easily share and collect reviews
So simple to invite reviewers and collaborators and to collect feedback!
Pro Includes custom templates that speed up prototyping
Can use a variety of options to save time and avoid duplicate work, e.g. layers, custom elements, scroll frame references. Global layers and reusable custom templates speed up prototyping.
Pro Screem transitions/animations
Offers an easy way to simulate common types of screen transition effects including for swipe interactions or adding delays. Also allows for sequential reactions.
Pro Live preview
Direct simulation of prototypes possible by switching from editing to preview mode.
Pro Screen map
A screenmap lets you easily link individual prototype pages. This is also great for uploading screenshots and linking them via action hotspots.
Pro Mobile prototypes
It's possible to simulate the prototypes directly on mobile devices - in the browser or with an handy app.
Pro Entire project can be easily updated with layers
Assets can be placed in layers and displayed on several pages. Provides for easy updating of entire project in case of changes.
Pro Rich functionality for a web-based application
Pro Integrates with multiple cloud storage services
Draw.io offers saving files directly to services such as Google Drive, OneDrive or Dropbox along with saving to to computer.
Pro Real-time collaboration
Pro Great flexibility customizing text labels
Pro Completely free
Pro There is also a Desktop version
Pro Good list of different output formats
Draw.io supports export for PNG, GIF, JPEG, PDF, SVG, HTML, and XML.
Pro Internet Explorer 6-8 and touch device support
Draw.io works with every browser (even IE 6) without plugins.
Cons
Con Web-based
Not a local application, so you can't use it without being online.
Con Import from Visio .vsd is useless
Even simple diagrams get all scattered.
Con Behaves strangely for certain diagram types
For example the snapping function for arrows doesn't work properly for the sequence diagram template.