When comparing Windows 10 IoT Core vs Plan 9, the Slant community recommends Plan 9 for most people. In the question“What is the best operating system for a developer?” Plan 9 is ranked 11th while Windows 10 IoT Core is ranked 15th. The most important reason people chose Plan 9 is:
Plan 9's design is very orthogonal and well done.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to make Internet of Things devices
Windows 10 IoT is made specifically for making IoT devices.
Pro Well designed
Plan 9's design is very orthogonal and well done.
Pro Designed to allow for multiple computers to work as if they were one
With Plan 9, computers are turned into terminals where you can access files and processing units which can be located elsewhere. Data storage is handled by another external server. This means that instead of each person having their own individual computer with all the required parts, all of the computing and storage is done in a central area and everything is networked in together.
Cons
Con Can't edit scripts directly on the device
Windows 10 IoT has no script editor. All your scripts have to be made on Visual Studio on a separate Windows 10 PC
Con Difficult to use software made for other systems
Plan 9 is very different from most other operating systems, and as such it's extremely difficult to bring in software designed for other operating systems ('porting').
Con No fully featured web browser
As indicated on the official Bell Labs webpage, there is no full featured web browser currently working on Plan 9, except abaco.
Con Not supported by most tools
Not supported by most dev tools beyond text editors.