Based on our record, Glowroot seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Java has an excellent one open source APM - https://glowroot.org/. Python and other tools - not so much. I wouldn't say Gartner created hype. Glowroot has been invaluable to us. Of course we run a massive footprint of 0.5m - 0.75m JVMs. - Source: Hacker News / over 1 year ago
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