Here is a list of links to different pages and articles on Low End Mac about the various different operating systems which ran on Macs.

/Software Tech Specs > macOS Index

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Modern macOS

• macOS 11.0 Big Sur
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• macOS 12.0 Monterey
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• macOS 13.0 Ventura
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• macOS 14.0 Sonoma
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  • macOS 14.8 Developer Beta RC1 Build 23J8 – August 5th, 2025
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  • macOS 14.8 Developer Beta RC2 Build 23J10 – August 11th, 2025
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• macOS 15.0 Sequoia
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  • macOS 15.6 Developer Beta 1, Build 24G5054d – June 16th, 2025
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  • macOS 15.6 Developer Beta 2, Build 24G5065c – June 30th, 2025
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  • macOS 15.6 Developer Beta 3, Build 24G5074c – July 14th, 2025
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  • macOS 15.6 Build 24G84 – July 30th, 2025
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  • macOS 15.7 Developer Beta RC1 Build 24G207 – August 5th, 2025
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  • macOS 15.7 Developer Beta RC2 Build 24G210 – August 11th, 2025
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• macOS 26.0 Tahoe
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  • Developer Beta 1 – Build 25A5279m – June 9th, 2025
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  • Developer Beta 2 – Build 25A5295e – June 23rd, 2025
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  • Developer Beta 3 – Build 25A5306g – July 7th, 2025
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  • Developer Beta 4 – Build 25A5316i – July 22nd, 2025
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  • Developer Beta 5 – Build 25A5327h – August 6th, 2025
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  • Developer Beta 6 – Build 25A5338b – August 11th, 2025
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  • Developer Beta 7 – Build 25A5346a – August 18th, 2025
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  • Developer Beta 8 – Build 25A5349a – August 25th, 2025
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  • Developer Beta 9 – Build 25A5351b – September 2nd 2025
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  • macOS Tahoe RC1 – Build 25A353 – September 9th, 2025
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  • macOS Tahoe 26.0 official RTM – Build 25A354 – September 15th, 2025
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  • More builds in macOS article.

• macOS 27.0 Golden Gate
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  • macOS Golden Gate Developer Beta 1 – Build 26A5353q – June 8th, 2026
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  • macOS Golden Gate Developer Beta 2 – Build 26A5368g – June 22nd, 2026

Other Mac Articles

• macOS Versions Throughout The Years, 2025 Edition