https://kinpowerup.weebly.com/what-are-default-apps-in-mac.html. The App Store only shows updates for the OS you are using at the moment, in your case Yosemite 10.10.5.
If you want to go to another newer OS that is called an upgrade. This can be done through the App Store using the following link.
Free Mac Software Downloads
Newest Mac Software Update Mojave
High Sierra is the last/ newest OS your Mac can use. Scroll down to Section 4 and click on Get macOS High Sierra.
Make a full back up of your Mac before upgrading.
Check to see with the developers of any third party apps you use that there are updates available so they will continue to work in the new OS. Another thing you need to check is if any printers/ scanners etc you use have updated drivers and software so they too can continue to function in the new OS.
This update won't include the latest version of the software so after performing the update, check Software Update and apply the latest macOS update. Install the OS from an external drive. Feb 03, 2019 High Sierra is the last/ newest OS your Mac can use. Scroll down to Section 4 and click on Get macOS High Sierra. Make a full back up of your Mac before upgrading. Check to see with the developers of any third party apps you use that there are updates available so.
Feb 3, 2019 11:15 PM
What Is The Newest Software For Mac
Jan 14, 2020 This update: Adds AirPlay 2 support for sharing videos, photos, music and more from your Mac directly to your AirPlay 2-enabled smart TV. Adds the ability to follow a magazine from the Apple News+ catalog browsing view.; Improves audio latency on MacBook Pro models introduced in 2018.; Fixes an issue that prevented certain very large OmniOutliner and OmniPlan documents from. Empowering Content Creators. Elgato Gaming Downloads. Connection Issues. Best flow diagram software mac and cheese. We are unable to fetch information from our download server.