JMeter is a pure Java desktop application designed to load test functional behavior and measure performance. It may be used to test performance both on static and dynamic resources (files, Servlets, Perl scripts, Java Objects, Data Bases and Queries, FTP Servers and more). It can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types. 

 It could do performance test for Web application, Web services, Database, LDAP, JMS, Mail. It produces graphical analysis of test report. Test results could be cached offline. Data analysis and visualization plugins allow great extensibility.

JMeter is a pure Java desktop application designed to load test functional behavior and measure performance. It may be used to test performance both on static and dynamic resources (files, Servlets, Perl scripts, Java Objects, Data Bases and Queries, FTP Servers and more). It can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types.

JMeter - Load and Performance tester

hawtio is a lightweight and modular HTML5 web console with lots of plugins for managing your Java stuff. It provides web console for Active MQ, Elastic search, Apache Camel, Apache CXF, Git, Fuse Fabric, Infinispan, Jetty, JMX, Quartz, Tomcat, Wiki, JVM, Junit and lot more. You can dynamically extend hawtio with your own plugins or automatically discover plugins inside the JVM.
 
The only server side dependency (other than the static HTML/CSS/JS/images) is the excellent Jolokia library which has small footprint (around 300Kb) and is available as a JVM agent, or comes embedded as a servlet inside the hawtio-default.war or can be deployed as an OSGi bundle.

hawtio is a lightweight and modular HTML5 web console with lots of plugins for managing your Java stuff. It provides web console for Active MQ, Elastic search, Apache Camel,  Apache CXF, Git, Fuse Fabric, Infinispan, Jetty, JMX, Quartz, Tomcat, Wiki, JVM, Junit and lot more.  You can dynamically extend hawtio with your own plugins or automatically discover plugins inside the JVM.

hawtio - A modular web console for managing your Java stuff

A command-line benchmarking tool (inspired by bench). If the program execution time is limited by disk I/O, the benchmarking results can be heavily influenced by disk caches and whether they are cold or warm.
 
Its features include: 
<ul>
<li>Statistical analysis across multiple runs.</li>
<li>Support for arbitrary shell commands.</li>
<li>Constant feedback about the benchmark progress and current estimates.</li>
<li>Warmup runs can be executed before the actual benchmark.</li>
<li>Cache-clearing commands can be set up before each timing run.</li>
<li>Statistical outlier detection to detect interference from other programs and caching effects.</li>
<li>Export results to various formats: CSV, JSON, Markdown, AsciiDoc.</li>
<li>Parameterized benchmarks (e.g. vary the number of threads).</li>
</ul>

A command-line benchmarking tool (inspired by bench). If the program execution time is limited by disk I/O, the benchmarking results can be heavily influenced by disk caches and whether they are cold or warm.

hyperfine - A command-line benchmarking tool

Selenium is a suite of tools such as Selenium IDE, Selenium Remote Control and Selenium Grid to test the web application. Selenium IDE is an integrated development environment for Selenium scripts. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests. It supports record and playback. 
 Selenium Remote Control (RC) is a test tool that allows you to write automated web application UI tests in any programming language against any HTTP website using any mainstream JavaScript-enabled browser. It is great for testing complex AJAX-based web user interfaces under a Continuous Integration system. Selenium Grid transparently distribute your tests on multiple machines so that you can run your tests in parallel. <img src="/AppImages/Article/selenium-ide.gif" alt="" class="float-center">

Selenium is a suite of tools such as Selenium IDE, Selenium Remote Control and Selenium Grid to test the web application. Selenium IDE is an integrated development environment for Selenium scripts. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests. It supports record and playback.

Selenium - Web app testing tool

Apache Continuum is an enterprise-ready continuous integration server with features such as Automated builds, Release management, Role-based security, and Integration with popular build tools and Source control management systems. Whether you have a centralized build team or want to put control of releases in the hands of developers, Continuum can help you improve quality and maintain a consistent build environment. Projects can be built simultaneously or concurrently locally using multiple build queues. Projects can be distributed and built in multiple build agents. Users can view all projects in the queue and interrupt some builds. Manual, scheduled and push (with xmlrpc) build technique are supported.
 <img src="/AppImages/Article/continuum-img1.jpg" alt="" class="float-center">

Apache Continuum is an enterprise-ready continuous integration server with features such as Automated builds, Release management, Role-based security, and Integration with popular build tools and Source control management systems. Whether you have a centralized build team or want to put control of releases in the hands of developers, Continuum can help you improve quality and maintain a consistent build environment.

Continuum - Continuous Integration and Build Server

Spinnaker is an open source, multi-cloud continuous delivery platform for releasing software changes with high velocity and confidence. It helps codify the process of safely and reliably deploying artifacts to the cloud. It can deploy across multiple cloud providers: AWS EC2, Google Compute Engine, Microsoft Azure, OpenStack and Cloud Foundry.
 
It provides support to create deployment pipelines that run integration and system tests, spin up and down server groups, and monitor your rollouts. Trigger pipelines via git events, Jenkins, Travis CI, Docker, CRON, or other Spinnaker pipelines.

 Spinnaker is an open source, multi-cloud continuous delivery platform for releasing software changes with high velocity and confidence. It helps codify the process of safely and reliably deploying artifacts to the cloud. It can deploy across multiple cloud providers: AWS EC2, Google Compute Engine, Microsoft Azure, OpenStack and Cloud Foundry.


Spinnaker - Global Continuous Delivery

Windmill is a web testing tool designed to automate and debug your web application. It provides cross-browser test recorder. It has built-in shell to interact with WIndmill server. Write and run tests from Python, Ruby and Javascript. 
 Github location: <A HREF="https://github.com/windmill/windmill/" target="_blank">https://github.com/windmill/windmill/</A>

Windmill is a web testing tool designed to automate and debug your web application. It provides cross-browser test recorder. It has built-in shell to interact with WIndmill server. Write and run tests from Python, Ruby and Javascript.

Windmill - Web Testing Tool

XChart is a light-weight and convenient library for plotting data designed to go from data to chart in the least amount of time possible and to take the guess-work out of customizing the chart style.
<ul>
<li>No required additional dependencies</li>
<li>~182KB Jar</li>
<li>Multiple Y-Axis charts</li>
<li>Line charts</li>
<li>Scatter charts</li>
<li>Area charts</li>
<li>Bar charts</li>
<li>Histogram charts</li>
<li>Pie charts</li>
<li>Donut charts</li>
<li>Bubble charts</li>
<li>Stick charts</li>
<li>Dial charts</li>
<li>Radar charts</li>
<li>OHLC charts</li>
<li>Error bars</li>
<li>Logarithmic axes</li>
<li>Number, Date and Category X-Axis</li>
<li>Multiple series</li>
<li>Tool tips</li>
<li>Extensive customization</li>
<li>Themes – XChart, GGPlot2, MATLAB</li>
<li>Right-click, Save-As…</li>
<li>User-defined axes range</li>
<li>Definable legend placement</li>
<li>CSV import and export</li>
<li>High resolution chart export</li>
<li>Export as PNG, JPG, BMP and GIF</li>
<li>Export SVG, EPS and PDF using optional de.erichseifert.vectorgraphics2d library</li>
<li>Real-time charts</li>
<li>Java 6 and up</li>
</ul>

XChart is a light-weight and convenient library for plotting data designed to go from data to chart in the least amount of time possible and to take the guess-work out of customizing the chart style.

XChart - Light weight Java library for plotting data

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