"What is Cocoa?"

I recently found an interesting exchange in the comp.sys.mac.programmer.help newsgroup that cast a bit of clarity on an issue that has likely confused many...


A user queried...

As I stated in my last post, I've been out of the Mac loop. Anyhow, I can't
seem to find a straight-up answer to my question: What is Cocoa, and why
should I care/learn its API? Point me in the right direction please! I swear
I learn quickly!


...and Jonh C. Randolph responded...

Cocoa is the latest name for the Application and Foundation frameworks,
which
started out on NeXTSTEP and then got ported to a few other places.

Cocoa is the native Mac OS X API, despite Apple's need to pretend that
Carbon (i.e, the Mac Toolbox minus the things you'd better not try to
do in a multi-user, multi-tasking system) is something more than a
legacy compatibility library.

The reason to learn it is to gain the threefold productivity increase
that
NeXT developers typically got when moving from other platforms.

Popular Stories

iPhone Top Left Hole Punch Face ID Feature Purple

iPhone 18 Pro Launching Later This Year With These 12 New Features

Thursday January 15, 2026 10:56 am PST by
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another eight months, there are already plenty of rumors about the devices. Below, we have recapped 12 features rumored for the iPhone 18 Pro models, as of January 2026: The same overall design is expected, with 6.3-inch and 6.9-inch display sizes, and a "plateau" housing three rear cameras Under-screen Face ID...
iPhone Top Left Hole Punch Face ID Feature Purple

New Leak Reveals iPhone 18 Pro Display Sizes, Under-Screen Face ID, and More

Wednesday January 14, 2026 7:09 am PST by
While the iPhone 18 Pro models are still around eight months away, a leaker has shared some alleged details about the devices. In a post on Chinese social media platform Weibo this week, the account Digital Chat Station said the iPhone 18 Pro and iPhone 18 Pro Max will have the same 6.3-inch and 6.9-inch display sizes as the iPhone 17 Pro and iPhone 17 Pro Max. Consistent with previous...
2024 iPhone Boxes Feature

Apple Adjusts Trade-In Values for iPhones, Macs, and More

Thursday January 15, 2026 11:19 am PST by
Apple today updated its trade-in values for select iPhone, iPad, Mac, and Apple Watch models. Trade-ins can be completed on Apple's website, or at an Apple Store. The charts below provide an overview of Apple's current and previous trade-in values in the United States, according to the company's website. Most of the values declined slightly, but some of the Mac values increased. iPhone ...
Apple MacBook Pro M4 hero

These 5 Apple Products Will Reportedly Be Upgraded With OLED Displays

Friday January 16, 2026 7:07 pm PST by
Apple plans to upgrade the iPad mini, MacBook Pro, iPad Air, iMac, and MacBook Air with OLED displays between 2026 and 2028, according to DigiTimes. Bloomberg's Mark Gurman previously reported that the iPad mini and MacBook Pro will receive an OLED display as early as this year, but he does not expect the MacBook Air to adopt the technology until 2028 at the earliest. A new iPad Air is...
Apple Wallet ID Illinois

Apple Plans to Expand iPhone Driver's Licenses to These 7 U.S. States

Friday January 16, 2026 12:12 pm PST by
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps. The feature is currently available in 13 U.S. states and Puerto Rico, and it is expected to launch in at least seven more in the future. To set up the...