Extensibility is one of Magento's hallmark features of the platform. Unfortunately unforeseen issues can arise when various extensions are installed alongside each other. No one likes dealing with these conflicts and they are a drag on any implementation.
Let's make this a better experience by discussing common and not so common causes and how we can improve on status quo.
The goal of this table is to jumpstart a solid list of action items that each extension should follow to increase interoperability with other extensions.