1.apache / skywalking
APM, Application Performance Monitoring System
+139 stars
from 24,845 · score 4.94
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Ranked by Attention Score: stars gained over the last 90 complete days
12 repositories by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
2.apache / hertzbeat
An AI-powered next-generation open source real-time observability system.
+137 stars
from 7,315 · score 4.93
3.resilience4j / resilience4j
Resilience4j is a fault tolerance library designed for Java8 and functional programming
+86 stars
from 10,712 · score 4.47
4.micrometer-metrics / micrometer
An application observability facade for the most popular observability tools. Think SLF4J, but for observability.
+44 stars
from 4,865 · score 3.81
5.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。
+41 stars
from 18,895 · score 3.74
6.dropwizard / metrics
:chart_with_upwards_trend: Capturing JVM- and application-level metrics. So you know what's going on.
+13 stars
from 7,833 · score 2.64
7.javamelody / javamelody
JavaMelody : monitoring of JavaEE applications
+11 stars
from 3,034 · score 2.48
8.prometheus / client_java
Prometheus instrumentation library for JVM applications
+10 stars
from 2,281 · score 2.40
9.tushartushar / DesigniteJava
Detects smells and computes metrics of Java code
+2 stars
from 193 · score 1.10
10.kairosdb / kairosdb
Fast scalable time series database
+1 stars
from 1,758 · score 0.69
11.stagemonitor / stagemonitorArchived
an open source solution to application performance monitoring for java server applications
+1 stars
from 1,691 · score 0.69
12.inspectIT / inspectIT
(UNMAINTAINED) inspectIT is the leading Open Source APM (Application Performance Management) tool for analyzing your Java (EE) applications.
+1 stars
from 538 · score 0.69