HSQLDB (HyperSQL DataBase) is the leading SQL relational database engine written in Java. It supports nearly full ANSI-92 SQL (BNF format) and full core SQL:2008. It offers a small, fast multithreaded and transactional database engine with in-memory and disk-based tables and supports embedded and server modes. It includes tools such as a command line SQL tool and GUI query tools.

HSQLDB supports the widest range of SQL Standard features seen in any open source database engine: SQL:2008 core language features and an extensive list of SQL:2008 optional features. Many extensions to the Standard, including features of other popular database engines, are also supported.

Version 2.2 is fully multithreaded and supports high performance 2PL and MVCC (multiversion concurrency control) transaction control models. See the list of new features in version 2.2.

HSQLDB is known for its small size, ability to execute completely or partly in memory, its flexibility and speed.

HSQLDB is completely free to use and distribute under HyperSQL DataBase licenses, which are based on the standard BSD license and fully compatible with all major open source licenses.

Latest stable version available for download is HyperSQL 2.2.6.

JpGraph is an Object-Oriented Graph creating library for PHP >= 5.1 The library is completely written in PHP and ready to be used in any PHP scripts (both CGI/APXS/CLI versions of PHP are supported).

Its available in two versions commercial Professional Version and Free version. You can see the comparision between the two versions here.

Features of JpGraph

The following is a shortlist of available features within the library.

• Web-friendly, average image size for a 300*200 image is around 2K and images are seldomly bigger than 4-5K
• Automatic generation of client side image maps to make it possible to generate drill-down graphs.
• Advanced interpolation with cubic splines to get smooth curves from just a few data points.
• Supports several plot types,spider-plots, pie-charts (both 2d and 3d) , scatter-plots, line-plots, filled line-plots, accumulated line-plots, bar plots, accumulated bar plots, grouped bar plots, error plots, line error plots, box plots, stock plots

• Support for alpha blending
• Has over 200+ built in Country flags
• Supports advanced Gantt-charts
• Flexible scales, supports integer, linear, logarithmic, text (counting) scales and any combinatino thereof on x/y axis
• Supports multiple Y-axes
• Support various layout with a background image behind the plot
• More than 400 named colors
• Extensive documentation with both a > 750 pages tutorial and an extensive class reference.
• Supports internal caching (with timeout) of generated graphs to lessen burden of a HTTP server.

Demo: http://jpgraph.net/features/gallery.php
Download: JpGraph 3.0.7
License: QPL 1.0 (Qt Free License), JpGraph Professional License

Projectfork is Joomla’s best project management component, and it’s totally free! Projectfork has its own extensible framework for themes and extensions and a thriving community of users and third party developers active in the community site and forums.

Project Management Features:

• Project Dashboard
• Unlimited Projects
• Milestones
• Tasks
• Calendar
• File Manager
• Discussions
• Time Tracking
• User Groups
• User Profiles
• Access Level Control (ACL)
• Email Notifications

Features available via themes & extensions:

• iPhone Optimization – Carbon theme
• JomSocial Integration
• Community Builder Integration
• Activity Stream
• User Status Updates

System Requirements:

• Joomla! 1.5.20 or later
  (Projectfork 3.0 is compatible with Joomla 1.6)
• PHP 5.2 or later
• MySQL 5.0 or later

Download: Projectfork V 3.0 Stable
Demo: http://demo.projectfork.net/
License: Open source (GPL v2)