When comparing Codiad vs Google VM Instance, the Slant community recommends Google VM Instance for most people. In the question“What are the best cloud IDEs?” Google VM Instance is ranked 15th while Codiad is ranked 27th.
Ranked in these QuestionsQuestion Ranking
Pro Multi-line edit
Allows to edit multiple things are once by having multiple cursors like Sublime Text.
Pro Easy to self-host: Only requires PHP
It only requires PHP 5+ and Nginx or Apache. No database is required. This makes it really easy to install on many servers include shared hosting.
Pro Has many easily installable plugins
Many plugins exist, from Terminal, Git to Collaboration and Emmet... Plugins can be installed by using the web interface, or by manually extracting files to the right directory.
Pro Open source
You can run Codiad on your server to allow you and your team to edit files.
Simplest to run may be using a Docker image like linuxserver/codiad.
Pro Simple and easily managable GUI
Pro Total environment control
Pro Can run any sort of web-based editor software
For example, one can run Jupyter Notebook on the VM.
Pro Real vi or Emacs editor
Pro Real Linux console
Con Full of small bugs
There are plenty of various issues and bug that may either be due to your setup and the UI will not report them, or due to bugs in the code; I'm including common plugins here as well (just naming a few: search files and in files may report nothing if it had an error, commands stderr not printed, marketplace not showing items, search in market place showing no results, Git escaping
\( in the commit message for no good reason...). Those are generally small but together it makes the product feel flawed.
Con Terminal runs as same user for everyone
No matter who is the logged in user, the Terminal plugin runs commands as the PHP user. This also affects the Git plugin in that there is a single SSH key for all users using your Codiad instance.
Con Currently no search and replace in multiple files
There is a search in multiple files, and search & replace in current file, but not something to perform a search & replace in multiple files.
Con Terminal doesn't TTY
The terminal plugin for Codiad allows users to type some commands and see the outputs, but not interactive input is supported (i.e. stdin is closed). Meaning you cannot run Vim, Tmux or anything requiring user inputs.
Con Demo only lasts 30min
Con This is not a "cloud IDE," this is a remotely accessible virtual machine.
This topic is about the best cloud IDEs and having a Google VM Instance on the list is a bit of a stretch. That's not to say that the service isn't valuable or great, but it is a completely separate purpose. Granted, you can certainly install the necessary tools on your virtual machine to make it an IDE that is remotely accessible, but that's not exactly the ideal situation and not what someone looking for a cloud IDE is likely looking to do.
Con Can be expensive
If one selects a powerful type of instance or if one does not take care and remember to shut off the instance when it is not being used.
Con Less ideal if you have a slow internet connection
Though this applies to any Cloud IDE, as well.
Con Less ideal if you are mouse dependent
Assuming you are using Vi or Emacs, and not Jupyter or some other web-based editor that is running on the remote VM instance.