"Jing captures anything on you see on your computer screen, as an image or short video, and lets you share it instantly".
Joomla Error Reporting
Not for your production site, but for your development environment you can go into Joomla's Global Configuration, Server tab and set Error Reporting to maximum to allow php to give you detailed information about any warnings or errors it finds.
In Fabrik's back-end, select Options then the Debugging tab and set "Allow fabrikDebug" to yes. Video on how to do this in this forum thread - http://fabrikar.com/forums/index.ph...y-lists-to-use-it-on-views.41066/#post-206867.
Then if you edit the URL for the page you are trying to fix to append the following string:
Joomla System Debug
Although this does not show much information about Fabrik, it can be useful for general Joomla debugging to go into Joomla's Global Configuration, System tab and set "Debug System" to yes.
Joomla Language Debug
If you are working on translation of Fabrik literal strings, it might be useful to go into Joomla's Global Configuration, System tab and set "Debug Language" to yes.
php variable display
If you are working on php code on a remote server and want to be able easily to dump variables so you can see what is happening in your code, then the J!Dump extension from the Joomla Extension Directory could be useful. Any variables that you dump will be shown in a pop-up window.
(If you have a local server, you might find using and IDE with debugging even better - see Joomla's Setting up your workstation for web development or Setting up your workstation for Joomla development.)
Note: If you find other tools useful, please share them here.