ChiliStats is a simple website statistics script that runs on PHP and MySQL.

The script isn’t particularly demanding or spacey and makes for a thorough, yet down-to-earth statistics system.

Chilistats has a referrer system (automatically parses search engine terms), allows IP blocking, and has a comfortable interface.

You’re probably wondering — why should I prefer Chilistats, not well-known services like Google Analytics? A statistics back-end is easier in the long term — especially if your clients aren’t fond of “outsourcing” services.

• Website: http://www.chiliscripts.com/scripts/chilistats/

PCSS is a server-side CSS preprocessor that enhances the functionality of CSS and makes it easier to write slim and effective code.

PCSS runs on PHP (server-side), and enhances the functionality of CSS by adding variables, pre-defined constants, and browser detection to CSS.

PCSS also offers short forms of numerous CSS properties, and minifies the written code in the end.

Overall, this library is potentially useful for most CSS designers, and the browser detection is really an ass-guard as it allows you to skip a lot of browser-specific code.

• Website: http://pcss.wiq.com.br/

Pixie is a simple CMS, or, as developers put it, a “website maker” written in PHP.

Although the development has been rather inactive for a while, Pixie is nevertheless a very promising little CMS with lots of bundled features:

• Anti-spam for comments;
• Built-in statistics (referral and otherwise);
• Theme-ability is great for a smaller CMS.

But you won’t, as often is the case with smaller website makers, like the lack of free themes to build upon when creating a design of your own.

• Website: http://www.getpixie.co.uk/

dhtmlxSpreadsheet is an Excel-like web spreadsheet written with JavaScript and PHP.

What’s new about this script is that it comes with pre-written math formulas and cell formatting.

Both Excel and PDF formats are supported for exporting the spreadshiit.

dhtmlxSpreadsheet is also available as a plugin for WordPress, Joomla, ModX, and Drupal.

• Website: http://www.dhtmlx.com/docs/products/dhtmlxSpreadsheet/

Melody is an open source CMS for bloggers and publishers that’s maintained and updated by the community.

Melody is a major fork of Movable Type, and branched off to provide a more community-driven content management system.

Melody is easy to theme, and powerful enough for most types of blogs. The CMS supports themes and plugins from MT, but the community has created more than enough extensions that are Melody-exclusive.

• Website: http://openmelody.org/

Selfoss is an open-source web based rss reader and multi-source aggregator.

Selfoss supports most major browsers, and also the Android and iOS platforms.

This application is extendable: developers can add the pre-built sprouts with a few lines of code.

Currently, Selfoss fetches data from the following sources: Twitter; RSS; Images from RSS; Images from tumblr; and images from deviantArt.

• Website: http://selfoss.aditu.de/