How do I remove apps from from dock and how do I delete apps on my macbook air?

Thank you so much.

Your instructions helped me to correctly remove an app I could not uninstall from my MacBook superior (right) dock. I don't know how it's called this "superior right dock" so I had a hard time finding this article with this valuable information. Again, thank you so much! :-)

Select a Dock icon and swiftly drag it up from the Dock until you see it go "poof" or says "Remove."

Basics for Uninstalling Software

Most OS X applications are completely self-contained "packages" that can be uninstalled by simply dragging the application to the Trash. Applications may create preference files that are stored in the /Home/Library/Preferences/ folder. Although they do nothing once you delete the associated application, they do take up some disk space. If you want you can look for them in the above location and delete them, too.

Some applications may install an uninstaller program that can be used to remove the application. If you cannot find the uninstaller then you could download the freeware, Easy Find, to locate files that need to be removed. The places you need to search include:

1. /Home/Library/Applications Support/ folder. Check if the application has created a folder then delete the folder that's in the Applications Support folder.
2. Applications may install a startupitem or a Log In item. Startupitems are usually installed in the /Library/StartupItems/ folder or the /Home/Library/StartupItems/ folder. Log In Items are set in the Users & Groups preferences. Open it inSystem Preferences, then click on the LogIn Items tab. Select the item from the list and click on the Delete [-] button to remove it.
3. Some software use startup daemons or agents. Look for them in /Library/LaunchAgents/ and /Library/LaunchDaemons/ or in /Home/Library/LaunchAgents/.

Some applications install a receipt in the /Library/Receipts/ folder. Usually with the same name as the program or the developer. The item generally has a ".pkg" extension. Be sure you also delete this item as some programs use it to determine if it's already installed.

There are many utilities that can uninstall applications. Here is a selection:

1. AppZapper
2. AppDelete
3. Hazel
4. AppCleaner
5. CleanApp
6. iTrash
7. AppBolish
8. AppUninstaller
9. Uninstaller

For more information visit The XLab FAQs and read the FAQ on removing software.

Removing items from the Dock will not improve your storage capabilities.

How to Free Up Space on The Hard Drive

1. You can remove data from your Home folder except for the /Home/Library/ folder.
2. Visit The XLab FAQs and read the FAQ on freeing up space on your hard drive.
3. Also, see Freeing space on your Mac OS X startup disk.
4. See Where did my Disk Space go?.
5. Be sure to Empty the Trash to recover the space.
6. Replace the drive with a larger one. Check out OWC for drives, tutorials, and toolkits.
7. Use OmniDiskSweeper or GrandPerspective to search your drive for large files and where they are located.

Did you release it? Which icon did you try to remove? Was the application itself running at the time?