I'm looking for a web application (preferrably Open Source) that will help me accomplish the following: I have a service business that works on digital files for clients. I'd like to broaden my reach through web, so want to give clients/public the ability to upload files to me and for me to keep track of who those files are from, and to be able to invoice them and track when they have paid, etc. so I can return the finished file to them. I'd like it to work with Paypal. [more inside]
posted by spock on Aug 17, 2009 - 1 answer

Disadvantages working with Open Source PHP Software in a WIMP environment? [more inside]
posted by fx3000 on Apr 19, 2008 - 8 answers

Simple e-commerce solutions. I have a fully built site, with individual webpages pointing to specific product items. I simply want to add a backend shopping cart functionality that resides on the server, without relying on PayPal. Whats the best opensource solution that allows me to pass a variable (ie, add a "Buy This" button to already-designed pages) to a shopping cart php function (inventory isn't necessary at this point) and allowing checkout/payment? [more inside]
posted by pinto on Apr 8, 2008 - 7 answers

Open Source Product or PHP Class to handle registration forms? [more inside]
posted by Greebie on Oct 3, 2007 - 6 answers

I need a package to facilitate collaboration among a group of people spread across the Internet/globe. Ideally it would track staff, projects, to-do lists and contacts. Open source (PHP/mySQL) would be ideal. Any suggestions?
posted by Leonard on Nov 4, 2004 - 11 answers