Free most customizable software for linux

My Calendar is a lightweight, easy-to-use Web calendar that is easily customizable using CSS.
There is also an included email script that you can have cron run every day to remind you of upcoming appointments.
My Calendar can also generate great looking printable calendars in Postscript and Adobe PDF format. Microsoft Outlook schedules can be easily imported.
Main features:
- lightweight and easy to setup
- email scrip to remind you of upcomming events
- email script can be run by cron and/or used to send emails to a mailing list for clugs and organizations
- easily generated pretty printable versiosn in postscript and PDF
- import events from Microsoft Outlook.
- easily customizeable with CSS and templating.

Photo Novilab provides a Web image gallery generation program.

Photo Novilab is an highly customizable program written in PHP that lets you create photo galleries on your Web site simply by uploading the images.

It creates a thumbnail gallery and has the capability to insert a button to send the photo link by email.

It also features the ability to view how many times a picture has been viewed.

PHP TopSites provides a PHP/MySQL-based customizable TopList script.
PHP TopSites is a PHP/MySQL-based customizable TopList script. Main features include: Easy configuration config file; MySQL database backend; unlimited categories, Site rating on incoming votes; Special Rating from Webmaster; anti-cheating gateway; Random link; Lost password function; Webmaster Site-approval; Edit site; ProcessingTime display; Cookies Anti-Cheating; Site Reviews; Linux Cron Free; Frame Protection and much more.
Main features:
- Unlimited Number of Sites.
- Unlimited Number of Categories.
- Unlimited Number of Reviews for Each Site.
- Administrator Control Panel.
- Rating for Each Site.
- Stars Rating for Each Site.

IPSquad Documentation is an XML-based documentation system similar to DocBook.

IPSDoc is a documentation system which uses XML.

Its goal is to provide a system which is like DocBook, but is simpler and more customizable.

It is currently possible to convert IPSDoc documents into PostScript, PDF, or RTF by using the included XSL:FO style sheets.

PHTP is a simple, effective, and highly customizable FTP client with an HTML interface. It can be implemented on a remote server to allow files to be downloaded directly to it, as it is able to make connections with any FTP server.
Enhancements:
- This release uses sessions. The design has been changed.
- A config file, multi-language support, and a queuelist have been added.

Cameleon project aims to become an integrated development environment for Objective-Caml, and eventually other languages.
Main features:
- graphical user interface,
- configuration management based on CVS,
- easy access to and browsing of documentation,
- various editors, according to customizable file types,
- use of plug-ins to define new features,
- highly customizable interface (menus, toolbar, keyboard shortcuts).

ViArt Shop is a Customizable Ecommerce PHP shopping cart software coming with Shopping Portal Extension, multiple layouts support and with advanced set of Sales Mechanisms (Products reviews and ratings, Discounts mechanism, Shipping and Stock mechanisms, etc), Web-based Administration with Order Maintenance, Product Maintenance, User/Shopper Maintenance, Vendor Maintenance, multiple payment processing capabilities (including support of Verisign, Authorize.net, Worldpay payment systems and more).
This ecommerce solution supports MySQL and PostgreSQL databases as well as ODBC connected databases.
Package includes additional applications: Events, News, FAQ, Support Heldesk System and Forum. The set of these applications and the highly-customizable Shopping Portal Extension allows creating complex Shopping Portal in no time!
Main features:
- No need for programming at all!
- Two-steps installation routine.
- Buy two integrated applications by the price of one: PHP Shopping Cart and Shopping Portal.
- Template-based system
- Multilingual interface
- Coupons
- Enterprise version comes with two more bonus applications: Support Helpdesk System and Forum integrated within one powerful Shopping Portal.

SimBar project is a fast and customizable dockbar for Linux.

SimBar is a fast and customizable dockbar. Allows the user to launch applications showing some eye-candy animation. It is written in c++ and wxWidgets and fits well in Gnome but works on most desktop environments. Does not require Compiz nor 3D acceleration.