Glowroot
A lightweight application performance monitoring tool for Java applications with minimal runtime overhead
- Also known as
- glowroot
What is Glowroot?
Glowroot is a Java application performance monitoring (APM) tool that captures request traces, provides continuous profiling, response time analysis, and database monitoring with extensive library and framework instrumentation.
Glowroot pricing
We don't have Glowroot's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Glowroot does
The capabilities that matter for apm tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Auto-instrumentation
- ✓
- Distributed tracing
- ✓
- Service map
- -
- Code / continuous profiling
- ✓
- Database monitoring
- ✓
- Error analytics
- ✓
- Real-user monitoring
- -
- SLO / error-budget tracking
- -
- Anomaly / root-cause AI
- -
- OpenTelemetry support
- None
- Language agents
- Java
- Hosting
- Self-hosted only
Platform & deployment
Independently observed- Web
- Self-hosted
Integrations (39)
Independently observed- Apache Camel
- Cassandra
- EJB
- Elasticsearch
- Grails
- Hibernate
- Apache HttpClient
- Apache HttpAsyncClient
- AsyncHttpClient
- OkHttp
- JavaMail
- JAX-RS
- JAX-WS
- JDBC
- JMS
- JSF
- JSP
- Kafka
- JUL
- Log4j
- Logback
- MongoDB
- Netty
- Play Framework
- Quartz Scheduler
- Redis
- Servlets
- Spring Framework
- Struts
- Vert.x
- Tomcat
- TomEE
- Wildfly
- JBoss EAP
- Jetty
- Glassfish
- Payara
- WebLogic
- WebSphere
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Glowroot FAQ
Common questions about Glowroot, answered from independent, dated evidence.
What is Glowroot?
Glowroot is a Java application performance monitoring (APM) tool that captures request traces, provides continuous profiling, response time analysis, and database monitoring with extensive library and framework instrumentation. It is indexed under APM Tools.
Source: https://glowroot.org
Is Glowroot free to use?
Glowroot is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.
Source: https://glowroot.org
What platforms does Glowroot support?
We have confirmed browser-based access to Glowroot. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.
Source: https://glowroot.org
Can Glowroot be self-hosted?
Yes. Glowroot can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://glowroot.org
What does Glowroot integrate with?
We have confirmed 39 integrations for Glowroot, including Apache Camel, Cassandra, EJB, Elasticsearch, Grails, Hibernate, Apache HttpClient and Apache HttpAsyncClient, plus 31 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.
Source: https://glowroot.org
Is Glowroot open source?
Yes. Glowroot is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Glowroot alternatives
Other apm tools we track, ranked by the same independent score.
- BlackfireWeb crawling, testing, and data extraction toolmedium · 70%
- PyroscopeCloud platform combining infrastructure monitoring with cost and AI usage analyticsmedium · 63%
- Datadog APMMonitor and troubleshoot cloud applications by unifying traces, logs, metrics, and user telemetry.low · 48%
- Azure Application InsightsEnd-to-end visibility into applications, infrastructure, and network systemslow · 41%
- DynatraceAI-powered platform for monitoring applications and infrastructure in real-timelow · 40%
- InstanaAutomatic observability with AI-powered root cause analysislow · 40%
Compare Glowroot
Side by side against other apm tools, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Glowroot, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Capabilities | 75 | 0.06 | 4.7 | ✓ |
| Release cadence | 85 | 0.05 | 4.4 | ✓ |
| Development activity | 41 | 0.09 | 3.9 | ✓ |
| Integrations | 49 | 0.07 | 3.6 | ✓ |
| Security score | 50 | 0.04 | 2.1 | ✓ |
| Stars | 59 | 0.03 | 1.5 | ✓ |
| Dependent projects | 19 | 0.06 | 1.2 | ✓ |
| Security posture | 0 | 0.12 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 19 | mediumsource · 2026-09-11 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 6 items | mediumsource · 2026-09-10 · 66% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Hosting: self · Languages: Java · Otel support: none · Db monitoring: Yes · Code profiling: Yes · Error analytics: Yes | mediumsource · 2026-09-14 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 50 | mediumsource · 2026-08-13 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Java | highsource · 2026-09-11 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | Apache-2.0 | highsource · 2026-09-11 · 95% |
Pricing
Release
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Status page | Yes | mediumsource · 2026-08-03 · 60% |
Security
Is Glowroot the right choice for you?
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