1.apache / hertzbeat
An AI-powered next-generation open source real-time observability system.
+57 stars
from 7,395 · score 4.06
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Ranked by Attention Score: stars gained over the last 30 complete days
9 repositories by Attention Score · Oct 4, 2026 – Nov 2, 2026 (UTC)
2.apache / skywalking
APM, Application Performance Monitoring System
+30 stars
from 24,954 · score 3.43
3.resilience4j / resilience4j
Resilience4j is a fault tolerance library designed for Java8 and functional programming
+25 stars
from 10,773 · score 3.26
4.dianping / cat
CAT 作为服务端项目基础组件，提供了 Java, C/C++, Node.js, Python, Go 等多语言客户端，已经在美团点评的基础架构中间件框架（MVC框架，RPC框架，数据库框架，缓存框架等，消息队列，配置系统等）深度集成，为美团点评各业务线提供系统丰富的性能指标、健康状况、实时告警等。
+10 stars
from 18,926 · score 2.40
5.micrometer-metrics / micrometer
An application observability facade for the most popular observability tools. Think SLF4J, but for observability.
+8 stars
from 4,901 · score 2.20
6.javamelody / javamelody
JavaMelody : monitoring of JavaEE applications
+7 stars
from 3,038 · score 2.08
7.dropwizard / metrics
:chart_with_upwards_trend: Capturing JVM- and application-level metrics. So you know what's going on.
+4 stars
from 7,842 · score 1.61
8.prometheus / client_java
Prometheus instrumentation library for JVM applications
+3 stars
from 2,288 · score 1.39
9.stagemonitor / stagemonitorArchived
an open source solution to application performance monitoring for java server applications
+1 stars
from 1,691 · score 0.69