As I said earlier in this review, OmniGraffle does an excellent job with arcs if they are created in OmniGraffle. The same is not true if the drawing I'm working on was imported from Visio. In that case, I need to just start all over with the arc lines, and that is not often a reasonable option.
Proto.io is an excellent product for small to medium teams that wants to have a prototyping or wireframing tool that is easy to use, can be used in collaboration with others and will deliver superior results with less efforts than similar options in the market. I think it is not so suited for teams that don't have more complex prototyping needs. In this case, other tools that are even simpler could be a better fit.
The ability to easily map out process flows for users of a wide range of tech comfort levels—The design is intuitive enough for even people with lower tech comfort levels to visually chart process flows. We have never had to do significant onboarding for less tech-savvy colleagues—this is a huge timesaver!
Collaborative mind mapping—OmniGraffle is a great platform to get together with people and brainstorm ideas in the early stages of a project, then link ideas together to create visual relationships to inform business and product design decisions.
Communicating strategy to stakeholders—Communicating the complexities of a workflow to stakeholders is a lot easier and more effective, with a diagram that clearly shows the relationships between factors rather than showing them a PowerPoint that, because of its slide-by-slide nature, makes it difficult to consistently show how different factors play into an overall workflow.
No support for team collaboration. I would really like to see a way to share files to iCloud so that others can access and edit.
Better print settings. If you're trying to print a document across many pages, it's not easy to make this happen.
No ability to pre-configure settings. For example, I have to manually change the unit of measure from "inches" to "pixels" when I create a new document, would like the ability to change that fundamentally.
Because we're primarily a Mac shop, Visio was a non-starter. (It's monstrously complex compared to OmniGraffle, which works against the quick-and-dirty just-enough-documentation ideal common on agile teams.) We've used draw.io on internal projects and when coordinating with external teams, but a web-based tool was too awkward for heavy use and bogged down with complex documents. For us, OmniGraffle sits in the "sweet spot" between complex data-driven modeling tools and lightweight "drawing" programs that force too much manual labor when doing heavy diagramming work.
Proto.io is web-based for one, which is a plus - Adobe XD is a desktop application. Adobe XD has some great features, especially for a free product, but from what I experienced Proto.io had way more tools and customization for creating interactive prototypes. Adobe XD is good for building prototypes that go from screen to screen, but Proto.io allows you to get much more detailed with that (every element on the screen can have an interaction).
I've created multiple OmniGraffle template files that I use constantly. I create covers for our proposals in OmniGraffle with pictures of the the client's buildings or sites. All I need to do is drag and drop the image into the template, change the title and client name and address accordingly and it's ready to go.
Using templates in OmniGraffle has saved lots of time.
Using OmniGraffle to design drawing details for construction documents has allowed us to land projects, purchase orders and new clients to the tune of hundreds of thousands of dollars.
