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title: Apache Karaf - Projects
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      <h1 class="display-4 font-italic">Apache Karaf is a project and a bunch of subprojects !</h1>
      <p class="lead my-3">Karaf provides enterprise ready features like shell console, remote access, hot deployment, dynamic configuration and many more. Karaf subprojects provide additional features like clustering, complete monitoring and alerting, application repository.</p>
      <p class="lead mb-0">Let's start !</p>
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          <strong class="d-inline-block mb-2 text-primary"><i class="fas fa-flask"></i> Runtime</strong>
          <h3 class="mb-0">
            <a class="text-dark">Karaf Runtime</a>
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          <p class="card-text mb-auto">Karaf Runtime is a modern and polymorphic application runtime.</p>
          <p>
            <small class="text-muted">Latest 4.2.9 <a href="/download.html"><i class="fas fa-download"></i></a></small>
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          <strong class="d-inline-block mb-2 text-primary"><i class="fas fa-server"></i> Clustering</strong>
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            <a class="text-dark">Karaf Cellar</a>
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          <p class="card-text mb-auto">Karaf Cellar is a clustering solution for Karaf.</p>
          <p>
            <small class="text-muted">Latest 4.1.3 <a href="/download.html"><i class="fas fa-download"></i></a></small>
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          <strong class="d-inline-block mb-2 text-primary"><i class="fas fa-warehouse"></i> Repository</strong>
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            <a class="text-dark">Karaf Cave</a>
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          <p class="card-text mb-auto">Karaf Cave is an artifact repository.</p>
          <p>
            <small class="text-muted">Latest 4.2.1 <a href="/download.html"><i class="fas fa-download"></i></a></small>
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          <strong class="d-inline-block mb-2 text-primary"><i class="fas fa-tachometer-alt"></i> Monitoring</strong>
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            <a class="text-dark">Karaf Decanter</a>
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          <p class="card-text mb-auto">Karaf Decanter provides ready to use monitoring solution.</p>
          <p>
              <small class="text-muted">Latest 2.4.0 <a href="download.html"><i class="fas fa-download"></i></a></small>
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              <h5 class="project-heading">Run your applications in <span class="text-muted">Karaf Runtime</span></h5>

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                <p class="lead">Karaf Runtime is a modern and polymorphic application runtime. It's a lightweight, powerful, and enterprise ready.
                <br/>By polymorphic, it means that Karaf can host any kind of applications : WAR, Spring, OSGi, and much more.
                <br/>Karaf can be use as a standalone immuatable runtime, or in a mutable runtime that you can manage remotely.</p>
                <p>
                    <a class="btn btn-primary" href="/download.html" role="button">Download &raquo;</a>
                    <a class="btn btn-outline-primary" href="/documentation.html" role="button">Documentation &raquo;</a>
                    <a class="btn btn-outline-dark" href="https://github.com/apache/karaf" role="button" target="_blank">View on GitHub &raquo;</a>
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              <h2 class="pb-3 mb-4 font-italic">Architecture</h2>

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                  Enterprise Features
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                  WebContainer (Pax Web)
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                        Instance
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                        JMX
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                        ConfigAdmin
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                        Security
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                        Shell / SSH
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                        Logging
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                        Deployers
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                        Provisioning
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                  Programming Model (Spring / BluePrint / DeclarativeService)
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                  OSGi Framework (Apache Felix / Eclipse Equinox)
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                  JVM
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              <h2 class="pb-3 mb-4 pt-3 mt-4 font-italic">Key features</h2>

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                      <h5 class="card-title text-dark">Hot deployment</h5>
                      <p class="card-text">You can directly drop your applications in the Karaf deploy folder, they will be directly deployed for you. You can also create your own deployer.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title text-dark">Dynamic configuration</h5>
                      <p class="card-text">All configurations (for Karaf itself and applications) are located in the Karaf etc folder. All changes in the configuration files are taken on the flyv: no need to restart.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title">Logging system</h5>
                      <p class="card-text">Karaf uses a centralized logging back end, supporting popular frameworks (log4j, slf4j, logback, ...).</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title text-dark">Provisioning</h5>
                      <p class="card-text">Karaf provides a very convenient way to provision applications: the Karaf Features.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title text-dark">Shell Console</h5>
                      <p class="card-text">Karaf provides a complete Unix like shell console, allowing to manage your container and applications. This shell supports completion, contextual help, key bindings, and much more.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title">Remote management</h5>
                      <p class="card-text">Karaf embeds a SSH server allowing you to remotely access the shell using any SSH client. On the other hand, Karaf also provides JMX MBean server allowing to manage the container using any JMX client.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title text-dark">WebConsole</h5>
                      <p class="card-text">In addition of ssh and JMX, you can also manage Karaf Runtime using a simple browser thanks to the Karaf WebConsole.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title text-dark">Security</h5>
                      <p class="card-text">Karaf fully supports JAAS based security framework. It also supports a complete RBAC system for shell commands and JMX objects. You can directly use this security layer in your own applications.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title">Instances management</h5>
                      <p class="card-text">You can manage several children instances inside the Karaf Runtime root instance. It's a very convenient way to test applications or configurations without impacting your existing running instances.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title text-dark">Docker & Cloud ready</h5>
                      <p class="card-text">Manage your Docker containers and images via Karaf shell console, provisionning a running instance in the simpliest way.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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              <h5 class="project-heading">Manage bunch of clustered instances with <span class="text-muted">Karaf Cellar</span></h5>

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                <p class="lead">You have bunch of Karaf Runtime instances running ? You want to manage those instances as one, spreading the configuration, deployment, etc ? Karaf Cellar is for you.<br/>
                Karaf Cellar is a clustering solution for Karaf. It allows you to manage multiple instances, with synchronization between the instances.</p>
                <p>
                    <a class="btn btn-primary" href="/download.html" role="button">Download &raquo;</a>
                    <a class="btn btn-outline-primary" href="/documentation.html" role="button">Documentation &raquo;</a>
                    <a class="btn btn-outline-dark" href="https://github.com/apache/karaf-cellar" role="button" target="_blank">View on GitHub &raquo;</a>
                </p>
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              <h2 class="pb-3 mb-4 font-italic">Architecture</h2>

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                  Discovery
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                  Cluster groups
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                  Sync and distribute resources
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                <div class="bg-primary p-4 mb-2 mt-2 text-white text-center">
                  DOSGi
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              <h2 class="pb-3 mb-4 pt-3 mt-4 font-italic">Key features</h2>

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                      <h5 class="card-title text-dark">Discovery</h5>
                      <p class="card-text">Each Karaf node is discovered automatically by the others, supporting different mechanisms (multicast, unicast, whiteboard, ...).</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title text-dark">Cluster groups</h5>
                      <p class="card-text">You can target the synchronization on a subset of nodes using cluster groups.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title">Sync and distribute resources</h5>
                      <p class="card-text">Cellar is able to synchronize and distribute applications (features, bundles, non-OSGi application), configuration, or local event.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title">DOSGi</h5>
                      <p class="card-text">Cellar support DOSGi (Distributed OSGi), allowing you to implement remote call between your applications.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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              <h2 class="pb-3 mb-4 pt-3 mt-4 font-italic">Extras</h2>
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              <h5 class="project-heading">Manage your artifacts repositories with  <span class="text-muted">Karaf Cave</span></h5>

              <div class="pb-4 mb-3">
                <p class="lead">Karaf Cave is an implementation of OSGi Repository specification. It can be used by the Karaf Features Resolver to provide resources, dealing with the requirements and capabilities of artifacts.</p>
                <p>
                    <a class="btn btn-primary" href="/download.html" role="button">Download &raquo;</a>
                    <a class="btn btn-outline-primary" href="/documentation.html" role="button">Documentation &raquo;</a>
                    <a class="btn btn-outline-dark" href="https://github.com/apache/karaf-cave" role="button" target="_blank">View on GitHub &raquo;</a>
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              <h2 class="pb-3 mb-4 font-italic">Architecture</h2>

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                  Repository metadata
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                  Repository proxy and populate
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                <div class="bg-secondary p-4 mb-2 mt-2 text-white text-center">
                  Maven support
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                <div class="bg-primary p-4 mb-2 mt-2 text-white text-center">
                  Storage
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              <h2 class="pb-3 mb-4 pt-3 mt-4 font-italic">Key features</h2>

              <div class="card-deck mb-3">
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                      <h5 class="card-title text-dark">Storage</h5>
                      <p class="card-text">Cave includes a pluggable storage back end.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title text-dark">Repository metadata</h5>
                      <p class="card-text">Cave is able to generate the metadata for a complete repository.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title">Maven support</h5>
                      <p class="card-text">Cave provides a complete Maven repository support.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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                      <h5 class="card-title">Repository proxy and populate</h5>
                      <p class="card-text">In addition of a complete repository, Cave is able to proxy an existing repository, adding the metadata.</p>
                      <p class="card-text"><small class="text-muted">Since 4.x</small></p>
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              <h5 class="project-heading">Monitoring, alerting, and BAM with <span class="text-muted">Karaf Decanter</span></h5>

              <div class="pb-4 mb-3">
                <p class="lead">You need a monitoring solution for Karaf and related ? You need a BAM (Business Activity Monitoring) platform for your application ? Karaf Decanter can be very convenient for you !<br/>
                Decanter provides ready to use monitoring solution. It's also completely extensible and customizable.</p>
                <p>
                    <a class="btn btn-primary" href="/download.html" role="button">Download &raquo;</a>
                    <a class="btn btn-outline-primary" href="/documentation.html" role="button">Documentation &raquo;</a>
                    <a class="btn btn-outline-dark" href="https://github.com/apache/karaf-decanter" role="button" target="_blank">View on GitHub &raquo;</a>
                </p>
                <p>
                  You can learn more about Karaf Decanter in this ApacheCon talk slideshow by Jean-Baptiste Onofré : <a href="https://schd.ws/hosted_files/apachecon2016/33/Monitoring%20and%20Alerting%20with%20Apache%20Karaf%20Decanter.pdf">View presentation</a>
                </p>
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              <h2 class="pb-3 mb-4 font-italic">Architecture</h2>

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                <div class="bg-dark p-4 mb-2 mt-2 text-white text-center">
                  Collectors
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                <div class="bg-secondary p-4 mb-2 mt-2 text-white text-center">
                  Dispatcher
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                <div class="bg-secondary p-4 mb-2 mt-2 text-white text-center">
                  SLA
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                <div class="bg-dark p-4 mb-2 mt-2 text-white text-center">
                  Appenders
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              </div>

              <h2 class="pb-3 mb-4 pt-3 mt-4 font-italic">Key features</h2>

              <div class="card-deck mb-3">
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                    <div class="card-body">
                      <h5 class="card-title text-dark">Collectors</h5>
                      <p class="card-text">The <strong>collectors</strong> harvest the monitored data (JMX metrics, log messages, ...).</p>
                      <p class="card-text"><small class="text-muted">Since 1.x</small></p>
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                  <div class="card">
                    <div class="card-body">
                      <h5 class="card-title text-dark">Dispatcher</h5>
                      <p class="card-text">A <strong>dispatcher</strong> (powered by OSGi EventAdmin) forwarding the collected data to the appenders and SLA.</p>
                      <p class="card-text"><small class="text-muted">Since 1.x</small></p>
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                    <div class="card-body text-dark">
                      <h5 class="card-title">Appenders</h5>
                      <p class="card-text">The <strong>appenders</strong> receive the collected data and store data into a back end (elasticsearch, cassandra, JDBC, ...).</p>
                      <p class="card-text"><small class="text-muted">Since 1.x</small></p>
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                      <h5 class="card-title">SLA</h5>
                      <p class="card-text"><strong>SLA</strong> (Service Level Agreement) is a special kind of appender, checking the collected data, and eventually raising an alert (to a back end).</p>
                      <p class="card-text"><small class="text-muted">Since 1.x</small></p>
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