Safari Technology Preview
The 15.4 version of Safari Technology Preview for Mac is available as a free download on our software library. Our antivirus analysis shows that this Mac download is clean. The size of the latest downloadable installation package is 56.2 MB. Safari Technology Preview for Mac lies within Internet & Network Tools, more precisely Browsers. This free Mac app is an intellectual property of Apple Inc.
From the developer:
Safari Technology Preview gives you an early look at upcoming web technologies in macOS and iOS. Get the latest layout technologies, visual effects, developer tools, and more, so you can provide input on how they are implemented and deliver a best-in-class user experience on all Apple devices.
You can update Safari Technology Preview right from the Mac App Store.
You may want to check out more software for Mac, such as VMware Fusion Tech Preview, Safari FIDO U2F or Youda Safari, which might be related to Safari Technology Preview.