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

Judy is a general purpose dynamic array implemented as a C callable library. Judy's speed and memory usage are typically better than other data storage models and improves with very large data sets. Judy's key benefits are scalability, high performance, and memory efficiency. A Judy array is extensible and can scale up to a very large number of elements, bounded only by machine memory. Since Judy is designed as an unbounded array, the size of a Judy array is not pre-allocated but grows and shrinks dynamically with the array population. 
 
 Judy can replace many common data structures, such as arrays, sparse arrays, hash tables, B-trees, binary trees, linear lists, skiplists, other sort and search algorithms, and counting functions.

Judy is a general purpose dynamic array implemented as a C callable library. Judy's speed and memory usage are typically better than other data storage models and improves with very large data sets.  Judy's key benefits are scalability, high performance, and memory efficiency. A Judy array is extensible and can scale up to a very large number of elements, bounded only by machine memory. Since Judy is designed as an unbounded array, the size of a Judy array is not pre-allocated but grows and shrinks dynamically with the array population. 

Judy - General purpose dynamic array

JMagick is an open source Java interface of ImageMagick. It is implemented in the form of a thin Java Native Interface (JNI) layer into the ImageMagick API.

JMagick - Java interface of ImageMagick

Shotwell is a photo manager for GNOME 3. It provides  support to Organize photos, Add tags to the photos, Import from disk or camera, Support photo editing capabilities like crop, rotate, color adjustment etc. 

Shotwell - Photo Manager for GNOME

Telosys is the best developer companion. It generates all the plumbing and repetitive code. It boosts the project kick-off saving many days of development. "Telosys studio" is provided as an Eclipse plugin, it allows to set up models, edit templates and generate the code. "Telosys CLI" can be used to launch generation tasks from the command line. 
 
 Telosys allows to generate code for any kind of language (Java, Python, PHP, JavaScript, C#, HTML, Scala, Go, etc) with any kind of framework (AngularJS, JPA, Spring MVC, etc)

Telosys is the best developer companion. It generates all the plumbing and repetitive code. It boosts the project kick-off saving many days of development.  "Telosys studio" is provided as an Eclipse plugin, it allows to set up models, edit templates and generate the code.  "Telosys CLI" can be used to launch generation tasks from the command line. 

Telosys - The simplest and lightest code generator

A powerful open source data warehouse system. InterMine allows users to integrate diverse data sources with a minimum of effort, providing powerful web-services and an elegant web-application with minimal configuration. InterMine powers some of the largest data-warehouses in the life sciences.

Intermine - A powerful open source data warehouse system

TextCat written in Perl helps to identify 69 natural langauge.

TextCat - Perl Program helps to identify natural language

jRSS is a simple java API to produce Really Simple Syndication (RSS) documents following the specification version 2.0. This library provides only support to generate RSS feeds.

JRss

The JCS Conflation Suite is an API and set of interactive tools which perform conflation on spatial datasets. It features:
 <ul>
	<li>JCS contains functions for performing various kinds of geo-spatial conflation processes.&nbsp;
	 The major conflation problems it addresses are Coverage Cleaning,
	 Coverage Alignment and Road Network Matching.&nbsp;&nbsp;
	<li>JCS supports QA operations for detecting and visualizing errors and
	 both automatic and manual cleaning functions to adjust geometry.&nbsp;
	<li>JCS supplies an API providing full programmatic access
	 to all functions
	<li>JCS provides manual editing tools to perform human-assisted conflation for
	 cases which automated methods cannot solve
</ul>

The JCS Conflation Suite is an API and set of interactive tools which perform conflation on spatial datasets.

JCS - Conflates spatial datasets

SQuirreL SQL Client is a graphical Java program that will allow you to view the structure of a JDBC compliant database, browse the data in tables, issue SQL commands etc. SQuirreL's functionality can be extended through the use of plugins. Its feature include:
 <UL>
	<LI>Object Tree of Session window</LI>
	<LI>SQL Editor with code completion, bookmark selection</LI>
	<LI>Editing of SQL results</LI>
	<LI>Graph: Charts of tables and their relations</LI>
 </UL>

SQuirreL SQL Client is a graphical Java program that will allow you to view the structure of a JDBC compliant database, browse the data in tables, issue SQL commands etc. SQuirreL's functionality can be extended through the use of plugins.

SQuirreL SQL - Universal SQL Client

TCPDF is a PHP class for generating PDF documents without requiring external extensions. TCPDF Supports UTF-8, Unicode, RTL languages, XHTML, Javascript, digital signatures, barcodes and much more. Sourceforge location: <A HREF="http://sourceforge.net/projects/tcpdf/" target="_blank">http://sourceforge.net/projects/tcpdf/</A>

 <ul>
 <li>no external libraries are required for the basic functions</li><li>all standard page formats, custom page formats, custom margins and units of measure</li><li>UTF-8 Unicode and Right-To-Left languages</li><li>TrueTypeUnicode, OpenTypeUnicode, TrueType, OpenType, Type1 and CID-0 fonts</li><li>methods to publish some XHTML code, Javascript and Forms</li><li>images, graphic (geometric figures) and transformation methods</li><li>1D and 2D barcodes including QR-Code ad PDF417</li><li>Grayscale, RGB, CMYK, Spot Colors and Transparencies</li><li>automatic page header and footer management</li><li>document encryption and digital signature certifications</li><li>transactions to UNDO commands</li><li>PDF annotations, including links, text and file attachments</li><li>text rendering modes (fill, stroke and clipping)</li><li>multiple columns mode</li><li>bookmarks and table of content</li><li>text hyphenation</li><li>automatic page break, line break and text alignments including justification</li><li>automatic page numbering and page groups</li><li>move and delete pages</li><li>page compression</li><li>font subsetting</li>
</ul>

TCPDF is a PHP class for generating PDF documents without requiring external extensions. TCPDF Supports UTF-8, Unicode, RTL languages, XHTML, Javascript, digital signatures, barcodes and much more.

TCPDF - PHP class for generating PDF

The JCCKit provides flexible framework for creating scientific charts and plots. It provides support for dynamic charts by automatically updating from the modified dataset. It is suitable for scientific Applets and for PDA's.

JCCKit - Chart Construction Kit for the Java platform

JFire provides complete and extensible solution for enterprise like User management, Online trade with business partners, Points of sale, Various distribution channels forming a distribution network, Store management and many more. 

 It offers Trade module which includes Accounting, Store-Management, Reporting. Reporting is based on BIRT helps to generate reports and statistics and it could be exported to various formats like HTML, PDF. Additionally Trade module integrates with third party payment systems. It is designed for global market. It supports multi currency, multi language, multi accounting and customizable tax formula. 

 It is client - server architecture and it uses Eclipse RCP (Rich Client Platform) as its client platform. 
 <img src="/AppImages/Article/jfire-img1.jpg" alt="" class="float-center">

JFire provides complete and extensible solution for enterprise like User management, Online trade with business partners, Points of sale, Various distribution channels forming a distribution network, Store management and many more.

JFire - ERP / CRM

jCore is a Multi Site web Content Management System build especially for webmasters (using the well known LAMP environment) who have to maintain multiple websites for their clients and they would like to keep the source codes up to date and easily fix bugs for all clients at once. Its feature include Dynamic Web 2.0 Layout, Forms, Multiple Menus, Members Management, RSS Feeds, jQuery support and lot more.

jcore - Webmaster Multisite CMS

Flying Saucer takes XML or XHTML and applies CSS 2.1-compliant stylesheets to it, in order to render to PDF (via iText), images, and on-screen using Swing or SWT. The library implements (basically) the entirety of CSS 2.1 and aims to be fully compliant with the W3C specification; it includes a small handful of CSS 3 features. 



Flying Saucer - XML/XHTML and CSS 2.1 renderer in pure Java

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