Apple's Claris Testing 'Harbor' App for Local AI on Macs

Apple's Claris subsidiary is testing an app called Harbor, which turns Apple silicon Macs into a private AI server. Harbor works with a single Apple silicon Mac, but it also supports connecting multiple Mac computers over Thunderbolt 5 to pool unified memory for larger models. Apple added RDMA over Thunderbolt 5 with macOS Tahoe 26.2, making clustering faster. Harbor detects devices connected over Thunderbolt 5 and lets users browse for, download, and load open-weight models. It's described as an easy-to-use app with no manual configuration required. Harbor turns your Mac into a private AI inference server. Run open-weight models locally on Apple silicon—your data never leaves your hardware, and nothing reaches the cloud. Connect multiple Mac computers over Thunderbolt 5 to pool unified memory, enabling large models and higher concurrency than a single computer can handle alone. Set up in minutes, not hours. Harbor automatically detects your devices over Thunderbolt 5 to form a cluster. Plug in, start, and you're running—no manual configuration, no command line, no infrastructure expertise required. Download and run models directly. Browse, download, and load open-weight models from within the app. Harbor handles model management so you can focus on the work, not the setup. Cluster for scale. Connect two or more Thunderbolt 5-capable Mac computers and Harbor pools their unified memory into a single inference resource. Run models that exceed any single computer's capacity, or serve more concurrent requests across your cluster. Harbor is in early access and is not publicly available. There was an App Store listing, but it has now been removed. Claris is known for its database platform FileMaker, which is aimed at businesses, so it isn't clear how Apple will market the Harbor app or whether it will be free. The sign-up page for Harbor asks for a company name, which suggests more of a business focus. There are already well-known, free alternatives for Mac users who want to run a local AI server. Exo is an open-source tool for clustering Macs, and LM Studio is available for single-Mac use, but Apple's Harbor app appears to combine LM Studio's simple interface with clustering. Popular StoriesApple Taking New Approach to Developing iOS 28 and macOS 28Apple has made a change to its development process for iOS 28, macOS 28, and corresponding software updates, according to Bloomberg's Mark Gurman. In his Power On newsletter today, he said Apple separates development of each year's new operating systems into three major stages. Typically, he said each stage consists of four weeks of coding followed by a four-week "convergence" period where...Apple Launching Two More New Products This FridayMonday November 9, 2026 4:22 am PST by Tim HardwickThe Apple launches keep coming! The company is set to release two new products on Friday, November 13: the all-new Apple HomeView and the fourth-generation Apple TV 4K, both of which have been available to pre-order since mid-October. Apple HomeView: Apple's new smart home display, powered by Apple Intelligence with Siri AI, for entertainment and managing the home. Available in tabletop and...More Fun iPhone Duo Apps: 30 New Picks to TryFriday November 6, 2026 3:27 pm PST by Juli CloverWhen the iPhone Duo launched, we shared a list of some of the fun apps developers created for the new form factor. Two weeks out, developers are continuing to come up with fresh ideas, so we thought we'd share some of our favorites. Games Marbles Unhinged ($2.99) - Marbles Unhinged is a marble maze designed for the Duo. When you fold it, the floor turns into a ramp. If you stand the top...