The best alternatives to My Site Archive are Website Downloader, WebSatchel, and Apptimeline. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
WebSatchel is a web extension that allows users to save highly accurate copies of web pages, store them on googles cloud and search for them on the WebSatchel website. Free to use and new users get 1 gigabyte of free storage. New features added regularly such as highlighting which allows for quick and easy referencing. Start saving pages today!
Apptimeline is like wayback machine for app listings on google play and iOS app store. You can track mobile apps across google play and iOS app stores across countries and get notified via email when these apps are updated.
ImmortalSV let's you take a snapshot of a website and upload it to the Bitcoin (BSV) blockchain, forever. It's useful for archiving websites and news. It requires a moneybutton.com account, but after that only takes two clicks.