iSQL-Viewer is JDBC compliant database front end. It implements across multiple platforms features of the JDBC API. It does everything through a single interface. iSQL-Viewer works with most database platforms, including PostgreSQL, MySQL, Oracle, and Informix.<BR><BR>
  Its feature includes: 
  <UL>
	<LI>Database and schema viewing and browsing</LI>
	<LI>Compatible with major database vendors</LI>
	<LI>SQL Bookmarks to store SQL commands you commonly use</LI>
	<LI>SQL History to see and retrieve SQL commans previously executed</LI>
	<LI>Enhanced user interface support across platforms</LI>
 </UL>

iSQL-Viewer is JDBC compliant database front end. It implements across multiple platforms features of the JDBC API. It does everything through a single interface. iSQL-Viewer works with most database platforms, including PostgreSQL, MySQL, Oracle, and Informix.

iSQL-Viewer - JDBC compliant database front end 

jCharts is a 100% Java based charting utility that outputs a variety of charts. Servlets, JSP's, and Swing application could use this library to generate charts. It could generate charts of type Area, Area Stacked, Bar, Bar Clustered, Bar Clustered Horizontal, Bar Horizontal, Bar Stacked, Bar Stacked Horizontal, Combo, Hi/Low Open/Close, Line, Pie 2D, Pie 3D, Point, Radar, XY Plot and lot more.

jCharts - Java based charting utility 

JChart2D is an minimalistic realtime charting library. JChart2D is a single configureable swing widget. JChart2D is intended for engineering tasks and not for presentations. It's specialty is run time - dynamic precise display of data with a minimal configuration overhead.

jChart2d - Swing chart widget

JGraphT is a Java graph library that provides mathematical graph-theory objects and algorithms. It includes directed, undirected, weighted, unweighted etc. Graphs could be created based on Strings, URLs, XML documents. 

jGraphT - Java graph library

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

The WebLOAD Open Source Load Generation Engine is an open source project sponsored by RadView Software. This project is intended for ISVs, SIs and software developers who need to integrate a professional load generation engine into their applications.

WebLoad - The best LoadRunner Alternative 

GRAL is a Java library for displaying graphs, diagrams, and charts. CSV, bitmap image data, audio file data could be used as data source. The generated graphs could be extracted to various file formats like bitmap, PNG, GIF, JPEG, EPS, PDF, SVG.

GRAL - GRAphing Library

Chart2d library provides support to generate two dimensional charts. Pie, Line, Bar, Scatter Plot chart types are supported. It supports both integer and real datasets and label formatting, both positive and negative.

Chart2d - Generate two-dimensional charts using Java

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