When comparing Eclipse Che vs Dirigible, the Slant community recommends Eclipse Che for most people. In the question“What are the best cloud IDEs?” Eclipse Che is ranked 8th while Dirigible is ranked 29th. The most important reason people chose Eclipse Che is:
Built-in terminal with root access so you can make changes to your running machines. Being able to SSH into the workspace so you can use a desktop IDE is handy.
Specs
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Pros

Pro SSH + terminal
Built-in terminal with root access so you can make changes to your running machines. Being able to SSH into the workspace so you can use a desktop IDE is handy.

Pro Custom commands
You can package up custom commands with your workspace and then use them (or share them) with everyone else.

Pro Docker runtimes
You can choose from pre-configured environments for Java, Javascript, C++, PHP, C#, etc., or you can define your own by dropping in a Dockerfile - makes it easy for simple and complex projects.
Pro GIT and SVN VCS support
Projects can be easily imported from any Git or Svn repository hosting service.
Pro Reproducible environment

Pro Portable workspaces
The workspace in Che includes project sources, IDE and the runtime. So if you hand your Che workspace definition to another user and they execute it they will get everything they need to build, run and debug the project.
Also the runtime is in a Docker container so it will work even if the second user is on a different OS than the original user who shared their workspace with them.

Pro Previews
Che does a nice job to automatically map the service:port running in the Docker container (e.g. tomcat on 8080) to the Docker port it actually uses (something in the ephemeral range). You never need to figure that out - it's just made available when you run your server.
Pro Merge tool for VCS

Pro Open-source
Pro In-system programming development model
Working on a live system shortens development turn-around cycles and eliminates the need of complex CI steps during development.
Pro Template based generation of user interfaces
Pattern-based user interface generation using Bootstrap/AngularJS or OpenUI5
Pro Template based generation of CRUD services
RESTful services based on database tables
Pro Short turnaround time
Pro Built-in Flows & Jobs
Simple workflows descriptors in JSON format for declarative modeling of application processes
Pro Database Modeling
Simple database table layout descriptors in JSON format
Pro Easy to use
Cons
Con Slow runtime
Online IDE is much slower than desktop one.
Con Poor documentation
Other than the getting started guide on their Github page, their only documentation is in PDF.
