At my current org, our product has a couple of dependencies we need to keep up to date whenever a new release ships. So I built this app to track those dependencies' end-of-life dates and alert us when a new release ships after its EOL date. 461 products, 8,441 tracked release cycles, polled daily against endoflife.date. That's where the underlying dates come from; it's MIT-licensed, and if you only need a one-time lookup, use it directly instead of this. Check out the app here: https://www.getendoflife.com/