RAD Software

1. First Day Os
2. Download New Mac Os
3. The Days Before Mac Os X

Mac System Software

2020 Fall Mack Days Anglers: Any boat that comes from out of the Flathead Basin will have to show proof of or be inspected. Boats from the Flathead Basin that have not left the basin will be good to go unless they are transported during the event out of the basin to other waters. At that time they will be required to be inspected.For. Five third-party apps I use on my Mac every day 1. The free OS X app be installed on your Mac and the $3.99 iOS. And grammar errors before I publish any.

Mac OS was named by the company Apple as 'Mac System Software' in the beginning, a specially designed operating system only for 68K first Motorola processors. With own Macintosh hardware, Mac OS takes up a special role in the world of desktop systems. The first version was 'System 1' and appeared bundled with the Mac in 1984. The classic desktop is designed as a single user operating system and almost completely hides the full path to files and directories. The graphic representation is reduced to the essence. Overall the interface is very easy to use and does not need the right mouse button for user interaction. Mac OS does not include a command line interface.
Starting with System 3.0, the used filesystem HFS was used officially, which does not different between uppercase and lowercase letters. System 5.0 was the first release to run several programs with the integrated MultiFinder at the same time. The operating system was programmed up to system 6.0 mostly in assembler and partially in Pascal and used a 24-bit addressing mode. Cooperative Multi-tasking could optionally be enabled in System 6. System 7.0 first supported 32-bit addressing. Thus allow the operating system can use more memory and more powerful programs. Since 1994 System 7.5 supported for the first time the PowerPC architecture and is optimized with the following Mac OS versions further on this architecture. With System software 7.6 the name was changed to Mac OS in January 1997.
The optimization of the operating system to the hardware has the disadvantage that the system software can not be installed on every Mac. Application compatibility to the Mac systems may also vary with each version.
2006 MacOS X was presented for the first time publicly on x86 hardware, Apple allows the use of Mac OS X only on specific intel-Macintosh systems. According to Steve Jobs Mac OS X have been developed since 2000 internally parallel for Intel and PowerPC processors. The version of Mac OS X 10.6.0 raised the optimization to Intel-based processors further, the new operating system is no longer available for PowerPC Macintosh or pure 32-bit intel processors. In return the user receives a pure 64-bit operating system optimized for performance on multiple processors. Even the GPU computing power itself can be used with specific applications.
The selection of software is focused on the creative industry and enables such as the professional graphic, audio and video editing. Office applications such as MacWrite, Microsoft Office, OpenOffice and 3D games are also available. The choice of browsers is large with iCab, Microsoft Internet Explorer, Netscape, Opera and Mozilla Firefox. StuffIt is the standard software for file compression.

System 6 (Mac OS)

Mac system software 6 came onto the market in 1988. It requires 1 MB RAM and can address up to 8 MB. The file system can organize hard disks up to 2 GByte with 65,536 files. Optionally applications run with the multi Finder in cooperative multitasking. For word processing are programs such as WriteNow, MacWrite II, and Microsoft Word 4.0 available.

System 7 (Mac OS)

The system 7 was first available in May 1991. The new operating system needed 2 MB RAM, optionally it can be switched to 32-bit depending from the used hardware. Cooperative multitasking is now enabled by default, the addressable memory is no longer limited to 8 MB. In addition virtual memory can be enabled.
New is the direct support of networks with file exchange, AppleScript as scripting language and display of colors. Balloons provide help for the user to use the interface. With aliases are icon links to files possible, regardless of the storage location locally or from the network. The TrueType fonts are scalable to any size.
The System Software 7.5 appeared in 1994 and requires at least 4 MB RAM. It was running both on 68k-Macs and Power Macintosh. In September 1996, the update System 7.5.5 includes all available bug fixes, Open Transport 1.1.2, current Ethernet driver and support for storage drive volumes up to 4 GB. With release 7.6 the company Apple changed the name for the operating system from System Software to Mac OS in 1997. At the 31. January 1999 Apple gave the Mac system software 7.5.3 public as free download.
Mac OS 7.6 can be installed on every Mac compatible computer, which contains at least a 68030 processor and supports 32-bit addressing. The 24-bit addressing is no longer supported. Performance is improved in the area of virtual memory and memory management. QuickTime version 2.5 offers better image quality and benefits of multiple processors.
On systems with 68040 or PowerPC processors partitions can be used of up to 2 TByte, systems with 68030 processor remain limited to 4 GB. Check of the disk after a system crash requires now much less time.

Mac OS 8

Mac OS 8 by Apple appeared in July 1997. As minimum requirements are specified a 68040 or PowerPC processor, 32 MB RAM and 120 MB of free disk space. The CTRL key is used to display a specific context menu for different actions. Finder in version 8 is now multithreaded and does no longer breaks other applications during the copy of files. The starting time of the operating system and applications is been reduced. As standard the browser software Microsoft Internet Explorer 3.0 and Netscape Navigator 3.0 are included. Inside of a TCP/IP network can shared files and printers accessed.
With Mac OS 8.1 the filesystem HFS+ is included by default. Now informations are stored more efficiently on the file system and does less waste disk space in comparison of HFS. The limit of the partition size is depending on your hardware, the maximum size is now 2 TByte for all Quadra and PowerMac systems. The file system can handle up to 2 billion files with a current file size of up to 2 GB. PC Exchange 2.2 allows users the mount of DOS and Windows drives on your desktop. The supported file systems include FAT12, FAT16, FAT32, VFAT.
Mac OS 8.5 further optimized the stability and speed of the operating system, Sherlock is extended for full-text search in local files and Internet search wizard for the first time. Mac systems with 68k processors are no longer compatible with this version. The throughput in Ethernet networks has been increased, AppleScript is now up to 5 x faster than the previous version. The graphical display is accelerated by new QuickDraw routines. Copying files has become faster and increase the disk throughput. A tool for system maintaining detects and fixes errors on the file system automated. The 'Apple System Profiler' creates comprehensive reports about the used hardware and software.
Following applications are included in current version: Finder 8.5 QuickTime Pro 3, Open Transport 2, Internet Explorer 4.01, Outlook Express 4.01, Netscape Navigator 4.0.5, Mac OS Runtime for Java 2.0 and File Exchange 3.
Mac OS 8.6 requires 250 MB free disk space and 24 MB RAM. A new kernel is included which improves performance and added support for the PowerPC G4 processor. The ability of multitasking and multiprocessing has been optimized further and enhanced with new features.
UDF 1.5.2 allows reading and storing data to DVD-RAM and read of DVD-ROM media.

Mac OS 9

The operating system Mac OS 9 has been developed under the name Sonata and released to the 23. October 1999. The installation requires 32 MB RAM with virtual memory and a PowerPC 601 processor or higher. For models with G3 processor are at least 64 MB RAM recommended for optimal performance. The first G4 and iMac systems until summer 2000 are supported. The free disk storage should be 150 up to 400 MB depending on the installation type.
50 new features are added in comparison to the previous version. This includes support for multiple users with password and access management for files and settings. The login is available through authentication by voice. Files can be stored encrypted. The operating system can automatically update itself via the Internet. You can back up all personal passwords with a master password. The integrated search engine Sherlock 2 is extended with language and search templates. The first version 'Carbon' API is available for new applications.
The following applications are included in current version: Finder 9.0, Mac OS Runtime for Java 2.1.4, Apple data security 2.0 and Open Transport 2.5.

Mac OS X

Different technologies like the Mach Kernel, NEXTSTEP and tools from NetBSD and FreeBSD found influence in Mac OS X to merge the previous Apple technology with UNIX features. The operating system core Darwin is open source and can be used also on x86 computers standalone. Mac OS X works with preemptive multi-tasking and includes beside the new GUI Aqua the classic GUI from Mac OS 9.
Mac OS X 10.0 came out in March 2001. To install are 128 MB RAM (256 MB RAM starting from Mac OS X 10.3.9) and 1.5 GB hard disk space (3.0 GByte starting from Mac OS X 10.2) provided. Mac OS X 10.5 requires at least 512 MB RAM and 9 GByte of free disk space.
- 32-bit or 64-bit processing
- SMP with up to 32 CPUs
- needs a PowerPC G3, G4 or G5
- POSIX compatible
- HFS+ file system
Field of Application
- digital photography
- 2-D and 3-D animations
- video processing, streaming
- audio processing
- platform for DTP, web design
- office applications
Structure Information
- supports QuickTime/VR
- monolithic Kernel
- Read/Write FAT, FAT32, ISO9660, UDF
- well proven TCP/IP Stack
- graphical user interaction with the finder

First Day Os

- graphical representation by Quickdraw
- central password administration (Keychain)
Considerable performance and comfort improvements were carried out in version Mac OS X 10.1. The surface reacts quicker at user interaction, the system start was accelerated and the OpenGL performance increased noticeable.
Mac OS X 10.3 has now a GUI in metallic scheme and the optimized Finder. The use and access in heterogeneous networks was further simplified. Files can be provided with etiquettes, the compression format ZIP is now directly supported. 12 million MacOS X user were counted in October 2004.
According to Apple Mac OS X 10.4 brings more than 200 new features. Features are the fast, system-wide and index-based search function named Spotlight, the Dashboard for easy access to small programs (Widgets), the Automator for the simplified composition of Applescripts for the automation of tasks. The Web browser Safari in version 2.0 now contained RSS support, the QuickTime software was updated to version 7 with support for the H.264 video codec. Further novelty is the delivery at a DVD medium, an installation of CD-ROM is no longer possible.
First since the 10th January 2006 is MacOS X 10.4.4 next to the PowerPC version available for Intel based Macs. On the 6. June 2005 Steve jobs announced at the WWDC the switch to Intel processors. As further details became known that Apple had developed Mac OS X since 2000 internally also for the Intel platform.
Apple released the successor MacOS X 10.5, Leopard at the 26.10.2007. With more than 300 innovations MacOS offers the user an enhanced user interface with virtual desktops, a fast file preview and Dock with 3D effect. The Finder was revised, the expansion 'Boot Camp' for the installation of Windows on Intel-Macs is an official component now. As a file system ZFS is optionally available. For the surfing on the Internet the Apple Safari 3 Web browser is included. Backups can be made, managed and restored in a simple way with 'Time Machine'. Time Machine makes every hour the day automatically a file backup and every day a snapshot for the duration of a complete month. Lost files are recovered easily over the display of a dynamic time line of those snapshot. The security of the operating system and applications is improved by 11 enhancements. This are beside others the application-based firewall, signed applications, the use of ASLR (Address Space Layout Randomization) and Sandboxing for applications.
Open Group certified MacOS X 10.5 according to the standard UNIX 03 in November 2007. MacOS X is the first free BSD derivative with such certificate to bear the name UNIX officially. The certification guarantees the use of UNIX standard implementations to porting UNIX applications easily.
The first update with bug fixes was released with Mac OS X 10.5.1 by Apple on November 15th, 2007. It contains general bug fixes for the operating system to improve stability, better compatibility and safety. Mac OS X 10.5.2 cames with 125 bug fixes and smaller optimizations on January 24th, 2008.
Mac OS X 10.6 is a Mac computer with Intel Core 2 Duo processor with at least 1 GB memory and 5 GB free space ahead. This operating system no longer exists as PowerPC execution. Apple placed the focus development on performance and stability. It supports up to 16 TByte memory, it is optimized for multi core processors, and is a pure 64-bit operating system. With the technology OpenCL graphics processor can speed up in specific applications calculations.

Download New Mac Os

Apple released macOS 10.12 as free update on 20th September 2016. The new operating system brings the personal assistant Siri to desktop computers. You can also Auto Unlock with your Apple Watch to unlock the computer automatically. The storage management has been optimized to e.g. free up local storage space and easily get rid of duplicate and obsolete files. The Universal Clipboard allows you to copy and paste images, video, and text between all supported devices. Beside of the HFS+ file system you can use the new file system Apple File System (APFS) as a developer preview on data volumes only. Highlights of APFS are e.g. native encryption, optimization for Flash/SSD storage and the Apple software ecosystem. It is planned that APFS will be the default file system for all Apple products in 2017.

Mac OS 1.0 Desktop	Mac OS 2.0 Desktop	Mac OS 3.0 Desktop	System 6, Macintosh Finder
System 6, system directory	System 6, system control	System 6, find file	System 6, Apple menu and scrap book
System 7.5.3, Desktop	System 7.5.3, Apple menu with control panel	System 7.5.3, system directory and info	System 7.5.3, file menu and system directory
System 7.5.3, help with text balloons	System 7.5.3, find file	Mac OS 7.6.1, system is starting	Mac OS 7.6.1, desktop and system directory
Mac OS 9, system is starting	Mac OS 9, desktop and version	Mac OS 9, iCab internet browser	Mac OS 9, Apple menu with system directory
Mac OS 9, control panel	Mac OS 9, system partition	Mac OS 9, Sherlock 2	Mac OS 9, context menu and alias
Desktop of Mac OS 8.1	Desktop of Mac OS 10	Mac OS 10.3 - Boot logo	Mac OS 10.3 - Installation screen
Language selection	Mac OS X installer	Storage drive for installation	Installation type for custom install
Boot screen of Mac OS X	Desktop with user directory	About this mac	System Preferences
Safari Internet Browser	Software Update	Applications	Unix bash terminal
Internet Explorer 5.2 for Mac

Versions

Updated and republished for macOS 11.3; skip it unless you really really care about all the macOS releases. Originally published on November 14th, 2005.

Below the break is a table showing all major releases of macOS (previously Mac OS X) from the public beta through the latest public version, which is 11.3, as of April 26th—the 148th release in total.

Note: Click the ⓘ symbol to read Apple's release notes for a given update.

The following was culled from Apple's support downloads page, and as such, some of the dates may be off just a bit. If you know for certain that something is incorrect, please let me know and I'll get it fixed. (Scroll to see all entries.)

Date	Version	Comments
2021	Apr 26	49	11.3	5.71 GB	ⓘ
	Mar 8	11	11.2.3	2.44 GB	ⓘ
	Feb 25	16	11.2.2	2.17 GB	ⓘ
	Feb 9	8	11.2.1	2.43 GB	ⓘ
	Feb 1	49	11.2	3.25 GB	ⓘ
2020	Dec 14	25	11.1	3.27 GB	ⓘ
	Nov 19	7	11.0.1	2.81 GB	ⓘ First general release of Big Sur
	Nov 12	7	11.0	12.18 GB	ⓘBig Sur - 11.0 only shipped on M1 Macs
	Nov 5	43	10.15.7 SU1	1.21 GB	ⓘ
	Sep 23	42	10.15.7	2.86 GB	ⓘ
	Aug 12	28	10.15.6 SU1	3.22GB GB	ⓘ
	Jul 15	44	10.15.6	3.35 GB	ⓘ
	Jun 1	6	10.15.5 SU1	1.59 GB	ⓘ
	May 26	48	10.15.5	3.37 GB	ⓘ
	May 21	--	10.14.6 SU4	151 MB	Fixes a launch issue for certain 32-bit apps
	Apr 8	15	10.15.4 SU1	1.38 GB	ⓘ
	Mar 24	56	10.15.4	3.0 GB	ⓘ
	Jan 28	49	10.15.3	3.0 GB	ⓘ
2019	Dec 10	42	10.15.2	3.0 GB	ⓘ
	Oct 29	14	10.15.1	4.5 GB	ⓘ
	Oct 15	8	10.15 SU1	985 MB	No info page
	Oct 7	11	10.15	4.9 GB	ⓘCatalina - You need more permission!
	Sep 26	31	10.14.6 SU3	1.32 GB	ⓘ
	Aug 26	25	10.14.6 SU2	1.25 GB	ⓘ
	Aug 1	10	10.14.6 SU1	949 MB	ⓘ
	Jul 22	70	10.14.6	2.7 GB	ⓘ
	May 13	49	10.14.5	2.5 GB	ⓘ
	Mar 25	62	10.14.4	2.8 GB	ⓘ
	Jan 22	48	10.14.3	2.0 GB	ⓘ
2018	Dec 5	28	10.14.2	2.5 GB	ⓘ
	Nov 7	8	10.14.1 SU1	1.3 GB	ⓘ For 2018 MacBook Air
	Oct 30	36	10.14.1	3.3 GB	ⓘ
	Sep 24	27	10.14	5.2 GB	ⓘ Mojave - You need permission!
	Aug 28	38	10.13.6 SU2	1.32 GB	ⓘ For 2018 Touch Bar MBP…again
	Jul 24	15	10.13.6 SU1	1.31 GB	ⓘ For 2018 Touch Bar MBP
	Jul 9	38	10.13.6	1.32 GB	ⓘ AirPlay 2
	Jun 1	64	10.13.5	2.12 GB	ⓘ Messages in iCloud
	Mar 29	37	10.13.4	2.36 GB	ⓘ Sortable Safari bookmarks!!
	Feb 20	28	10.13.3 SU	40.4 MB	ⓘ Indian character/Messages crash fix
	Jan 23	33	10.13.3	1.97 GB	ⓘ
	Jan 8	33	10.13.2 SU	633.6 MB	ⓘ Spectre and Meltdown fixes
2017	Dec 6	36	10.13.2	2.08 GB	ⓘ
	Oct 31	26	10.13.1	1.47 GB	ⓘ
	Oct 5	10	10.13 SU	915 MB	ⓘ Addresses two security issues
	Sep 25	68	10.13	4.8 GB	ⓘ High Sierra - Higher in the mountains?
	Jul 19	65	10.12.6	1.98 GB	ⓘ
	May 15	49	10.12.5	1.57 GB	ⓘ
	Mar 27	63	10.12.4	1.56 GB	ⓘ Night Shift
	Jan 23	41	10.12.3	1.05 GB	ⓘ
2016	Dec 13	50	10.12.2	1.94 GB	ⓘ
	Oct 24	34	10.12.1	1.36 GB	ⓘ
	Sep 20	64	10.12	4.77 GB	ⓘ Sierra - Still in the mountains.
	Jul 18	63	10.11.6	759 MB	ⓘ
	May 16	57	10.11.5	759 MB	ⓘ
	Mar 20	61	10.11.4	1.58 GB	ⓘ
	Jan 19	41	10.11.3	662 MB	ⓘ
2015	Dec 9	49	10.11.2	1.4 GB	ⓘ
	Oct 21	21	10.11.1	1.19 GB	ⓘ
	Sep 30	48	10.11	6.08 GB	ⓘ El Capitan - Go climb something!
	Aug 13	44	10.10.5	1.02 GB	ⓘ
	Jun 30	75	10.10.4	1.09 GB	ⓘ
	Apr 16	8	10.10.3 SU	1.8 MB	ⓘ Supplemental Update
	Apr 8	71	10.10.3	1.52 GB	ⓘ Includes Photos app
	Jan 27	71	10.10.2	544 MB	ⓘ
2014	Nov 17	32	10.10.1	311 MB	ⓘ
	Oct 16	29	10.10	5.2 GB	ⓘ Yosemite - No surfers here.
	Sep 17	79	10.9.5	139 MB	ⓘ
	Jun 30	46	10.9.4	283 MB	ⓘ
	May 15	79	10.9.3	461 MB	ⓘ
	Feb 25	71	10.9.2	460 MB	ⓘ
2013	Dec 16	55	10.9.1	243.4 MB	ⓘ
	Oct 22	19	10.9	5.3 GB	ⓘ Mavericks - All out of big cats!
	Oct 3	21	10.8.5 SU	19.6 MB	ⓘ Supplemental Update
	Sep 12	100	10.8.5	273.7 MB	ⓘ
	Jun 4	82	10.8.4	152.0 MB	ⓘ
	Mar 14	161	10.8.3	249.0 MB	ⓘ
2012	Oct 4	15	10.8.2 SU	26.7 MB	ⓘ Supplemental Update
	Sep 19	27	10.8.2	665.5 MB	ⓘ
	Aug 23	29	10.8.1	24.2 MB	ⓘ
	Jul 25	77	10.8	4.1 GB	ⓘ Mountain Lion - App Store only
	Oct 4	15	10.7.5 SU	2.0 MB	ⓘ Supplemental Update
	Sep 19	133	10.7.5	1.1 GB	ⓘ Released w/ 10.8.2
	May 9	98	10.7.4	692.7 MB	ⓘ
	Feb 1	112	10.7.3	1.3 GB	ⓘ Only combo updater available
2011	Oct 12	56	10.7.2	768.8 MB	ⓘ Now iCloud enabled
	Aug 17	29	10.7.1	79.3 MB	ⓘ
	Jul 19	26	10.7	4.1 GB	ⓘ Lion - App Store only (USB stick later)
	Jun 23	94	10.6.8	453.6 MB	ⓘ App Store readied for Lion
	Mar 21	74	10.6.7	475 MB	ⓘ
	Jan 6	57	10.6.6	143.6 MB	ⓘ Can you say 'App Store?'
2010	Nov 10	148	10.6.5	644.5 MB	ⓘ
	Jun 15	78	10.6.4	607.2 MB	ⓘ
	Mar 29	140	10.6.3	719.2 MB	ⓘ
2009	Nov 9	60	10.6.2	473 MB	ⓘ
	Sep 10	13	10.6.1	71.5 MB	ⓘ
	Aug 28	23	10.6	2.31 GB	ⓘ Snow Leopard - First Intel-only release
	Aug 5	85	10.5.8	274 MB	ⓘ
	May 12	148	10.5.7	442 MB	ⓘ
2008	Dec 15	91	10.5.6	372 MB	ⓘ
	Sep 15	77	10.5.5	316 MB	ⓘ
	Jun 30	33	10.5.4	88 MB	ⓘ
	May 28	107	10.5.3	420 MB	ⓘ
	Feb 11	88	10.5.2	343 MB	ⓘ Combo updater only
2007	Nov 15	20	10.5.1	110 MB	ⓘ
	Oct 26	128	10.5	2.15 GB	ⓘ Leopard - First universal binary release
	Nov 14	147	10.4.11	128 MB	ⓘ This '10' goes to '11'
	Jun 20	99	10.4.10	72 MB	ⓘ
	Mar 13	165	10.4.9	160 MB	ⓘ
2006	Sep 29	94	10.4.8	206 MB	ⓘ
	Jun 27	85	10.4.7	133 MB	ⓘ
	Apr 3	48	10.4.6	163 MB	ⓘ
	Feb 14	35	10.4.5	16 MB	ⓘ
	Jan 10	71	10.4.4	55 MB	ⓘ First Intel-capable release
2005	Oct 31	111	10.4.3	97 MB	ⓘ
	Jul 12	57	10.4.2	44 MB	ⓘ
	May 16	17	10.4.1	37 MB	ⓘ
	Apr 29	14	10.4	1.78 GB	ⓘ Tiger
	Apr 15	65	10.3.9	51.3 MB	ⓘ
	Feb 9	56	10.3.8	26.6 MB	ⓘ
2004	Dec 15	40	10.3.7	97 MB	ⓘ Combo updater only
	Nov 5	88	10.3.6	34 MB	ⓘ
	Aug 9	75	10.3.5	???	ⓘ
	May 26	72	10.3.4	79 MB	ⓘ Combo updater only
	Mar 15	89	10.3.3	70 MB	ⓘ Combo updater only
2003	Dec 17	37	10.3.2	36.9 MB	ⓘ
	Nov 10	17	10.3.1	1.5 MB	ⓘ
	Oct 24	21	10.3	1.54 GB	ⓘ Panther
	Oct 3	57	10.2.8	40 MB	ⓘ
	Sep 22	139	10.2.7	???	Only for certain G5s/G4s
	May 6	26	10.2.6	26 MB	ⓘ
	Apr 10	56	10.2.5	81.9 MB	ⓘ
	Feb 13	56	10.2.4	76 MB	ⓘ
2002	Dec 19	38	10.2.3	51 MB	ⓘ
	Nov 11	54	10.2.2	24.4 MB	ⓘ
	Sep 18	26	10.2.1	16.3 MB	ⓘ Update not available?
	Aug 23	79	10.2	1.03 GB	ⓘ Jaguar
	Jun 5	47	10.1.5	45.1 MB	ⓘ Combo updater only
	Apr 19	57	10.1.4	1.7 MB	ⓘ
	Feb 21	62	10.1.3	16 MB	ⓘ
2001	Dec 21	37	10.1.2	29.2 MB	ⓘ
	Nov 14	50	10.1.1	13.8 MB	ⓘ
	Sep 25	95	10.1	989 MB	ⓘ Puma
	Jun 22	44	10.0.4	12 MB	ⓘ
	May 9	8	10.0.3	15 MB	ⓘ
	May 1	15	10.0.2	15 MB	Released but replaced (see comments)
	Apr 16	23	10.0.1	4 MB	ⓘ
	Mar 24	192	10.0	659 MB	ⓘ Cheetah
2000	Sep 13	--	10.0β	676 MB	ⓘ Public Beta

Note: The Days column reflects the number of days between releases.

Some entries may appear out of chronological order (i.e. 10.5 is shown on Oct 26, but above Nov 14 for 10.4.11). This is to keep the version numbers in the proper order, even when an older OS received an update after a major new release came out. This has happened a few times over the years.

Some random notes, updated from the original post:

• Starting with the Public Beta and up through 11.3, there have been 148 macOS releases, both major and minor. This figure includes the one odd macOS X release: 10.2.7. This version was only for the then-new PowerMac G5 and the flat panel iMac G4, and was never generally released.
• As of April 26th (11.3's release date), it's been 7,530 days since the Public Beta was released. So on average, we've seen some sort of update every 51.6 days.
• The shortest time period between any two releases is six days, which is how quickly the 10.15.5 Supplemental Update 1 came out after the 10.15.5 release.
• The longest time period between any two minor releases is 165 days, which was how long we waited for the 10.4.9 update. (Tecnically, it's actually the 192 day interval between the Mac OS X Public Beta and version 10.0, but I'm counting from the official 10.0 release.)
• The smallest update was 10.3.1, at only 1.5MB. The largest (non-combo, non-main OS release) update was 11.3 at 5.71GB.
• The '???' entry for Size on a given release indicates I was unable to find the size. Feel free to contact me if you can help replace any of the '???' entries.

And now, gratuitous graphics…

Releases by version number

Releases by year

A special 'thank you!' goes to Mr. Ziebell (for providing some size values on very-old minor updates), and to Benton Quest (for providing size info on all the major releases up through Snow Leopard). See Benton's comment below if you want a nicely detailed history of those early releases.

The Days Before Mac Os X