Emacs vs Eclipse Che

Emacs can be controlled entirely with the keyboard.

Customizations can be made to a wide range of Emacs' functions through a Lisp dialect (Emacs Lisp). A robust list of existing Lisp extensions include the practical (git integration, syntax highlighting, etc) to the utilitarian (calculators, calendars) to the sublime (chess, Eliza).

You can debug, compile, manage files, integrate with version control systems, etc. All through the various plugins that can be installed.

You can use Emacs' command line interface or graphical user interface.

Emacs has extensive help support built-in as well as a tutorial accessed with C-h t.

Licensed under GNU GPL.

With 30+ years of use the Emacs documentation is very thorough. There are also a lot of tutorials and guides written by third parties.

You can pass complicated arguments in the mini buffer.

Fully compliant GNU-emacs is available on many platforms, and they all understand .emacs configuration files.

Emacs can select rectangularly.

With lisp customization, any behavior of Emacs can be changed. Update with pre-release patch can be also applied without recompiling the whole Emacs.

Evil mode emulates vim behaviors within Emacs. It enables Vi users to move inside the Emacs universe.

Evil is an extensible vi layer for Emacs. It provides Vim features like Visual selection and text objects.

Review the "Emacs Rocks" video.

Advanced planning and publication which can start as a simple list.

Dynamic word completion.

Works on Linux, Windows, Macintosh, BSD, and others.

Through its programmability, a very broad range of functionalities can be integrated in emacs, turning it even into a "single point of contact" with the underlying operating system.

You can jump straight from your org-mode files to programming tasks - and back - and build a seamless workflow.

Powerful commands, search, and more with the Helm plugin.

Since version 25 you can run GTK widgets inside Emacs buffers. One of these is the WebKitGTK+, which allows the user to run a full-featured web browser inside Emacs with JavaScript and CSS support among other things.

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.

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.

Projects can be easily imported from any Git or Svn repository hosting service.

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

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.

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.