When comparing Komodo Edit vs Coda 2, the Slant community recommends Komodo Edit for most people. In the question“What are the best JavaScript IDEs or editors?” Komodo Edit is ranked 25th while Coda 2 is ranked 30th. The most important reason people chose Komodo Edit is:
Komodo Edit has a built-in FTP client which allows developers to access remotely hosted files.
Specs
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Pros
Pro Has built-in FTP
Komodo Edit has a built-in FTP client which allows developers to access remotely hosted files.
Pro Free and open-source
Komodo Edit is the free and open-source counterpart of Komodo IDE.
Pro Vim support
Komodo Edit has support for a limited Vim mode.
Pro Real IDE with all the benefits
Coda 2 comprises all you would expect from an IDE: it supports multiple languages (including all the standards); it performs autocomplete of project names, as well as language functions; it supports SVN and GIT; it has good support for plugins (or you can write your own); it has a configurable editor; and it has a built-in preview.
Cons
Con Not very lightweight
Komodo Edit is not very lightweight and that can slow it down during startup.
Con Adds project files to project code
Con Defective UI
There are several things in Coda that simply don't work, and never have. For instance, the root directory for your local and remote files is simply not honored. For every project, you can specify the root directory for its files. But when you open the project in Coda, it doesn't go there. The file browser just shows whatever the last directory was that you were using, and will write files to the wrong place. Thus, it defeats the purpose of setting the home directory in the first place.
Also, splitting the editor doesn't work. If you've done any programming, you know how important it is to be able to view two files simultaneously. Coda fails to do this, with a bizarre insistence on making the two panes dependent on each other.
Con Support for Mac and commercial use only
Coda 2 is only available on Mac (even though that does make it a native app, meaning its much faster). Coda 2 costs $99 after the 30 day free trial is up.
Con No XDebug
If you also write PHP, there's no XDebug support available.