When comparing Atom vs Spacemacs with Python layer, the Slant community recommends Spacemacs with Python layer for most people. In the question“What are the best Python IDEs or editors?” Spacemacs with Python layer is ranked 6th while Atom is ranked 12th. The most important reason people chose Spacemacs with Python layer is:
At the heart of Spacemacs, the configuration layers group packages configuration into semantic units that can be toggled on and off. The architecture is simple but powerful allowing to easily manage configuration dependencies between hundreds of packages. Layers for other languages can be found [here](https://github.com/syl20bnr/spacemacs/tree/master/layers/+lang).
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Extensive list of packages
Atom has a built-in package manager and an extensive list of packages.
Pro Built-in package management
Atom was built from the ground up with the community in mind. Package management is therefore a first class feature.
Pro Multiplatform
Atom can run on Mac, Windows, and Linux.
Pro Extendable
Due to its modular design, almost any aspect of the editor can be changed. Even seemingly core packages, like those taking care of search and replace functionality, can be forked on GitHub, and changed and replaced in the editor.
The documentation for creating new plugins is also great, making it easier for developers to jump in and create plugins for Atom.
Pro Free and open source
Atom is free, open source, and written in C++, LESS, and CoffeeScript.
Pro Beginner friendly
One of the goals of Atom is to be a text editor for both experienced and beginner programmers. You can add keyboard shortcuts, change themes, install plugins, and change core settings by clicking through a GUI, or by manually editing config files the old-fashioned way. It has the added advantage of being built using the same engine that powers Google Chrome, so actions like opening and closing tabs feel familiar, even to new or non-programmers.
Pro Embedded Git control
Atom will highlight folders, files, and lines that have any uncommitted edits made. It also integrates really well with GitHub.
Pro Multi-line select and edit
Multiple cursors and column selection allow for versatile ways of editing.ctrl + d
will select the current word and each time the command is repeated, it adds the next occurrence of the word to the selection.ctrl + click
or middle-mouse click
will place another cursor in the place that's clicked. Cursors can then be controlled together. This also allows for selecting vertically.
Pro Command Palette support
The Command Palette permits fuzzy searching all available functions, settings, snippets, etc.
Pro Allows for instant file switching
By pressing Ctrl or Command + T and using fuzzy search, you can look for a file in your project.
Pro Themes
You can theme and customize Atom to your liking.
Pro Command line integration out of the box
Installing Atom adds two command line commands - atom
and apm
. The first one runs the application itself while the second is the Atom Package Manager that's used to add and remove various components from the package listing. While these features can be set up with other editors as well, Atom takes care of them out of the box.
Pro HiDPI support
Atom has built-in HiDPI support with zero scaling issues.
Pro Modern feel and very customizable and extendable
Pro Vim plugin turns Atom into a modernized vim
Pro Best support for Arduino with Platformio
Arduino is the most important platform for developing embedded systems.
Pro Could also be used as an IDE
Atom qualifies to be a good IDE because of the packages like linters, atom browser and hydrogen.
Pro Support for different languages with layers
At the heart of Spacemacs, the configuration layers group packages configuration into semantic units that can be toggled on and off. The architecture is simple but powerful allowing to easily manage configuration dependencies between hundreds of packages.
Layers for other languages can be found here.
Pro Easy to remember keybindings
Key bindings are organized in mnemonic namespaces. For instance buffer actions are under b
, file actions under f
, project actions under p
, search actions under s
etc...
Key bindings are consistent across the whole distribution thanks to a set of conventions.
Pro Great support from the community
The community is very active and there is a welcoming gitter chat to ask for questions.
Pro Free/Libre/Open
Pro It includes org-mode
Pro Easy to manage configuration dependencies
At the heart of Spacemacs, the configuration layers group packages configuration into semantic units that can be toggled on and off. The architecture is simple but powerful allowing to easily manage configuration dependencies between hundreds of packages.
Pro Gradual learning curve
Evil package is a first class citizen, Spacemacs embraces it from day one. Evil package allows Vim users to be productive very quickly while still allowing regular Emacs users to use Spacemacs.
Pro Above average documentation quality
Documentation is mandatory for each new configuration layer and can be accessed directly within the editor in Org format.
Cons
Con Very slow startup time
Atom is very slow to startup, which is a big disadvantage if you are accustomed to using it to make quick changes on your files.
Con High memory usage
Atom has a relatively high memory usage, especially when compared to some other text editors not based on Electron. For those who develop on the go, this also tends to mean shorter battery life.
Con Has difficulty with large text files
Tends to crash or hang with large >(10MB) text files, making it less useful as a general text editor.
Con Slows down exponentially with plugins
Extending it needs sacrificing responsiveness.
Con Not suitable for older computers
Atom requires a lot of system resources to run, so it will most probably be painfully slow on an older machine.
Con Doesn't handle RTL (right-to-left text) well
Text can't be highlighted and manipulated properly, cursor isn't displayed visually according to where it is logically (you have to type to find out), and similar issues.
Con Indent errors
Sometimes, especially when given a file that has different indentation that the current setting, the programm seems to get confused.
Con Not known when a new window will open
It's not really clear why and when a new window is opened when you open a file out of the tree view.
Con No text UI
Con Bloated - too many packages, too little productivity
Unable to use package to even convert a C file to PDF.
Con Slow because of Electron
Atom is not a native application. As such performance is subpar and the lag is especially noticeable on larger projects. It also opens a surprising amount of sub-processes and leaks a considerable amount of memory.
Con Crash and data loss
Repeated data loss when the app crashes.
A bugreport about that was closed automatically after some time, nobody cares.
Con Missing additional touches
As Atom is still relatively new, it's missing nice little touches that other text editors have implemented over the years. From simple ease-of-use items like middle-mouse button multi-cursor select, to the ways pasted information from a spreadsheet is interpreted in multi-select situations.
Con Doesn't recognize some keyboards
Con Configured in Emacs Lisp
Most developers don't know Lisp all that well, and of those, the subset that knows elisp is even smaller. Thankfully, it's not that difficult to get a basic Spacemacs configuration together without knowing elisp (thanks to Spacemacs's spectacular documentation), but if you need to alter, fix, or customize a plugin/layer in non-trivial ways, this can become a major hindrance.
Con Not an IDE
For users that aren't familiar with Vim or Emacs, Spacemacs will have a steep learning curve since everything is based on keyboard shortcuts and IDE-based users (or even users coming from editors like SublimeText or Atom) may have trouble finding things and adjusting to a new editing style.
Con Slow startup time
Although configuration is heavily lazy loaded, the starting time of Spacemacs is usually between two and five seconds. Emacs can be run as a daemon though which reduces the clients startup time to a few milliseconds.