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Life & fun · June 24, 2020

Blunders.io, a tool to profile JVMs in production

Blunders is a web-based profiler of JVM applications. Understand and fix performance problems, faster.

Blunders.io, a tool to profile JVMs in production launched on June 24, 2020 with 46 votes, #860 of 4,317 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 6 years on.

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In plain words

Blunders.io is a JVM profiling tool designed for production environments. It helps developers identify performance issues and bottlenecks in Java applications running in live systems. The tool provides detailed insights into JVM behavior, making it useful for software engineers who need to optimize and troubleshoot their Java-based applications without disrupting service. Blunders.io focuses on making production profiling accessible and straightforward for development teams.

written from the facts on this page · September 2026

From the sources

Effectively improve the performance and stability of Java/JVM applications. Find out how Blunders can help your business today. Book a demo with us. We will send you an personal email. No mass emails or subscriptions. Blunders.io helps us swiftly identify performance issues at a very granular level, saving us both engineering time during investigations and money as we optimize bottlenecks. Blunders is my favorite devtool. We’re building a high-performance application and we have Blunders profiling enabled during development and in production. I don’t think we would have been able to build this product without Blunders and I now hesitate to using languages that Blunders does not support. A…from blunders.io

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