Atom has a built-in package manager and an extensive [list of packages](https://atom.io/packages). Packages are written in CoffeeScript.
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Pro Dropbox and Google Drive support
Codeanywhere allows connecting and pulling development files from a Dropbox or a Google Drive account, making it easy to sync development files across devices.
Pro Full terminal access
CodeAnywhere gives users full terminal access.
Pro Unlimited revisions
Each action performed on any file from any resource will be saved forever.
Pro Github integration
Integrates with Github and allows logging in with your Github account.
Pro Has mobile apps for all major mobile OSs
Codeanywhere has apps for iOS, Android, Kindle Fire, Windows, and Blackberry.
Pro SFTP access
Allows connecting code via FTP, SFTP.
Pro BitBucket integration
Integrates with BitBucket and allows logging in with your BitBucket account. It's possible to launch Codeanywhere from within BitBucket's repo by adding Codeanywhere integration as an add-on.
Pro Good editor
Pro Allows inviting collaborators with a link
Codeanywhere has a feature called Share Links, that allows users to collaborate with others on their projects in real-time by simply sharing a link to their work.
Pro Multiple devboxes
DevBoxes are saveable, fully customizable development environments that run on either Open VZ or Docker and each has a dedicated amount of memory and disk space. Multiple devboxes can be run at the same time.
Pro SSH Terminal
Even for 3rd party SSH connections.
Pro Integration with DigitalOcean
CodeAnywhere recently partnered up with DigitalOcean. Now users can manage, spin up and provision DigitalOcean droplets all from the CodeAnywhere IDE. This is a great addition for both products, combining the power of an affordable host with the portability and power of CodeAnywhere IDE.
Pro OneDrive integration
Similar to their Dropbox integration, it gives you full access.
Pro Extensive list of packages
Atom has a built-in package manager and an extensive list of packages. Packages are written in CoffeeScript.
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.
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.
Atom can run on Mac, Windows, and Linux.
Pro Free and open source
Atom is free, open source, and written in C++, LESS, and CoffeeScript.
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 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 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 Command line integration out of the box
Installing Atom adds two command line commands -
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.
You can theme and customize Atom to your liking.
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.
Con No debugging options found (stepping through code)
Con Non free/libre (proprietary)
Con iOS app hasn't been updated in almost 3 years
Update as of August 20 2017
Con Web editor on iPad is severely lacking
Codeanywhere relies on right click for major actions but doesn't support this interaction on iPad. Selecting listed Dev box URLs to access site is also unworkable in practice. iPad app allows the actions but has very limited set of Dev box controls.
Using an external keyboard with the app can also be problematic as the arrow keys don't work.
Con SSH Port will be different each time you start your DevBox
Only for Always on DevBoxes will SSH ports remain static.
Con Does not have a function name list in side panel view
Con Does not jump to definitions
Unable to navigate the class definition or declaration.
Con Can't use SFTP with GIT
Con UI is not optimized and zoom is applied to the entire screen, rather than just the editor
The buttons are way too small. The UI feels washed out and opaque. Zoom (Ctrl++) is applied on the entire screen and not just on the editor.
Con 2 Factor authentication is a joke
Con Customer support is virtually non-existent
Con Web terminal window doesn't always run
In many instances, opening a terminal window in CodeEnvy would continue to load eternally.
Con Very unstable
It's a nice IDE when it works, but suffers a lot from instability with things like being unable to save files, or not starting up, as well as crashes, etc.
Con Confusing, not user friendly
It's so confusing versus other IDEs. Not recommended for newbies and programming students.
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 No text UI
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 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.
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 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 Crash and data loss
I lost unsaved changes 2 times when the app crashes.
A bugreport about that was closed automatically after some time, nobody cares.