TomatoCart is a new and open source shopping cart solution. It is forked from osCommerce 3 as a separate project and is free to use and modify. It use Web2.0 technology such as Ajax and Rich Internet applications (RIAs).
Tomato Cart’s application offers to the user a similiar experience of desktop Operating System. Additionally, it supports multi-window operations and that enables users to work with several modules simultaneously.

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Tags: Ajax, Ecommerce, Free, MySQL, Open Source, PHP
Inspired by 1kbgrid.com. Developed with love by Girlfriend’s overconfident and pretty good looking team of web developers. Tiny Fluid Grid ships with a index.html with demo code, and the grid.css containing the CSS for the grid you created.

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License: Creative Commons Attribution-Share Alike 3.0 US License
Tags: CSS, Framework, Free, Open Source, Tools
Horinaja is a ready-to-use slide-show implementation, utilizing either scriptaculous/prototype or jQuery.
Horinaja is innovative because it allows you to use a mousewheel for navigation.
When the mouse is outside of the slide-show area, it scrolls. When hovering over the slide-show, the scrolling pauses.
It can automatically create slide indices (pagination), if required.
To manually scroll, either click on the slide index links (pagination) or use your mouse wheel

Requirements: jQuery
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Tags: Free, jQuery, Scriptaculous, Slideshow
LetterGenie is a web-based program for creating customized letters using your existing contact database. With its release, LetterGenie works seamlessly with Highrise, an elegant online contact manager created by 37signals.

Features:
- Syncs with Highrise: No need to retype names, addresses or phone numbers; your contacts are automatically available to use.
- Save Time and Money: Why pay an assistant to draft up letters and risk mistakes when you can get it right every time?
- You Design Your Letters: Insert your signature, add your letterhead and personalize the content with contact names and addresses.
- Lightning Fast: Create one custom letter or hundreds with the touch of a button, all in PDF format, ready to email or print.
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Tags: Marketing, Software, Tools
notapipe.net is a web service that allows you to edit text files in a realtime collaborative environment, from everywhere.
Multiple users can edit the same document simultaneously and changes are near instantly dispatched to every connected user.

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Website | Demo
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Tags: Collaboration, Tools, WEb service