Where are these "Mac Extensions" hiding?

[Dekema2]

I know iOS has extensions, but in Yosemite, there are now extensions.

As you can see they are a number of them in the SysPref pane. The question is, where can you download them? A google search only shows these outdated Safari extensions, and AFAIK they are supposed to be a big component of new programs like Photos, allowing them to bridge the gap between pro users and amateur users.

 

[crashoverride77]

I know iOS has extensions, but in Yosemite, there are now extensions.

Image

As you can see they are a number of them in the SysPref pane. The question is, where can you download them? A google search only shows these outdated Safari extensions, and AFAIK they are supposed to be a big component of new programs like Photos, allowing them to bridge the gap between pro users and amateur users.

It will probably be the same as ios, it will be integrated with the app itself. You won't have to download a separate extension everytime.
App developers are just so slow these days, it's sad. They haven't even updated ebay for the iPhone 6/6+ yet, it only has been like 6 months.

 

[Weaselboy]

They get installed along with the relevant app. You can see two I have here that showed up when the apps were installed.

 

[KALLT]

A google search only shows these outdated Safari extensions, and AFAIK they are supposed to be a big component of new programs like Photos, allowing them to bridge the gap between pro users and amateur users.

I think your expectations of these extensions are a bit too high. They don’t do that much on the Mac yet, at least no novel features. Even in the Photos beta the extensions are really only used for sharing and setting a desktop wallpaper (for now at least). Mac developers have fewer restrictions than iOS developers so the need for separate extensions doesn’t arise that often.

For instance, the Finder extensions allow apps like Dropbox to maintain a Dropbox folder and upload updates in the background. But this process was possible already, for years even (in fact, the Finder extensions are more limited too; Dropbox has lost some functionality because of it). Evernote just updated its app and added an extension to the share sheet, but it isn’t nearly as powerful as its browser extension and it’s actually slower as well (always a few seconds to load). The Mac was already very powerful before the extensions, contrary to iOS.