A long page with all 3430 sessions from 25 events.

Apple presented an update on the upcoming Mac OS X, Developer Preview 4 (DP4) was released. The new Project Builder was introduced.

Apple presented updates on Mac OS X, the first release of Mac OS X Server and WebObjects 5 was released.

Apple presented Mac OS X 10.2, QuickTime 6 and Rendezvous (now named Bonjour).

Apple presented Mac OS X Panther (10.3) and Safari.

Apple presented Mac OS X Tiger (10.4). Core Data was introduced.

Apple announced the Mac would transition to Intel.

Apple presented Mac OS X Leopard (10.5) with full 64-bit support and Core Animation. Objective-C 3.0 was introduced with optional garbage collection (GC), properties and fast enumeration.

Apple announced the iPhone would run web apps, no mention of an SDK.

Apple announced Mac OS X Snow Leopard (10.6), iPhone OS 2.0, the iPhone SDK and App Store.

Apple announced iPhone OS 3.0.

Apple announced the renaming of iPhone OS to iOS, the new iOS 4 would run on both iPhone and iPad.

Apple announed OS X Lion (10.7) and iOS 5. This year Auto Layout was introduced, and Automatic Reference Counting (ARC) was added to Objective-C.

Apple announced OS X Mountain Lion (10.8) and iOS 6. This year SceneKit was introduced.

Apple announced OS X Mavericks (10.9) and iOS 7. iOS 7 introduced a completely redesigned user interface, featuring a flatter design, new icons and animations and a move away from skeuomorphism. Xcode 5 was announced.

Apple announced OS X Yosemite (10.10) and iOS 8. Yosemite features a redesigned interface inspired by the flatter design from iOS 7. With the Continuity and Handoff features, iOS and Mac OS X more closely interact. Swift is introduced as a new programming language from Apple platforms, Swift is described as “Objective-C without the C”.

Apple announced OS X El Capitan (10.11). iOS 9, and watchOS 2. iOS 9 includes support for 3D Touch (peek and pop). Swift 2 was released, and as of version 2.2 made into an open source project.

Apple announced macOS Sierra (10.12), iOS 10, tvOS 10, and watchOS 3. The APFS file system was announced. Swift 3 was introduced with significant syntax changes, focussing on source stability for future versions.

Apple announched macOS High Sierra (10.13), iOS 11, tvOS 11, and watchOS 4. iOS 11 introduced Drag and Drop, Metal 2, Core ML, and ARKit.

Apple announced macOS Mojave (10.14), iOS 12, tvOS 12, and watchOS 5. Mojave includes a “dark mode”, iOS 12 includes Shortcuts, Swift 4 was introduced.

Apple announced macOS Catalina (10.15), iOS 13, iPadOS 13, tvOS 13, and watchOS 6. Catalina includes support for Catalyst to run UIKit (iOS/iPadOS) apps on macOS. iOS and iPadOS 13 added support for “dark mode”. SwiftUI was introduced.

Apple announced macOS 11 (Big Sur), iOS 14, iPadOS 14, tvOS 14, and watchOS 7. The transition to Apple Silicon (ARM) was announced, a Developer Transition Kit (DTK) was made available to Mac developers. iOS 14 added support for widgets.

Apple announced macOS 12 (Monterey), iOS 15, iPadOS 15, tvOS 15, and watchOS 8. TestFlight for macOS, SharePlay and StoreKit 2 were introduced.

Apple announced macOS 13 (Ventura), iOS 16, iPadOS 16, tvOS 16, and watchOS 9. Transferable, Swift Regex, and distributed actors were announced.

Apple announced macOS 14 (Sonoma), iOS 17, iPadOS 17, tvOS 17, and watchOS 10. A preview of Vision Pro and visionOS was shown. SwiftData and mergeable libraries were announced.

Various Tech Talks presented throughout the years. Separate from WWDC events.