VAT Checker for EU countries is a simple PHP class to check the validity of a VAT number from the European Union countries. It provides a single function that accepts a VAT number and a 2-letter country abbreviation as input and returns a boolean value to indicate whether the number is valid.
Pandorabots Chat Bot Interface is a learning tool for implementing AJAX to communicate between the browser and a server. The chat bot interface communicates via XML with a free chat bot you create and host at pandorabots.com. The client script controlls a div that records your ongoing conversation. The final product is an embedded chat bot in your Web site.
Linweight is an enterprise client-server system for operating truck/train scales at weight stations. It can communicate with various brands of truck scales to obtain gross and tare weights. It stores and organizes the weights with other related information and generates forms and reports. It has been running at 4 installations 24x7 with more than 10,000 truck-loads weighted.
Monjo is a Web application that helps monitoring a small to medium network of servers. It offers easy customization of notifications in case of network failures and is designed to allow for easy addition of new services that need to be monitored. It's internationalized and includes a Web interface in English and German. It currently supports notifications by email and can check services using ping, SMTP, HTTP, POP3, and IMAP4.
Goptical is the GNU Optical design and simulation library. It provides model classes for optical components, surfaces, and materials and enables building of optical systems by creating and placing various optical components in a 3D space and simulating light propagation through the system. Classical optical design analysis tools can be used on optical systems. It takes advantages of the C++ object model to allow the building of complex optical systems with a few class instantiations, as optical components are represented by language objects.
lfgapp is a client and server which provides a looking for group (LFG) service to be used alongside MMORPGs. A player community (player-run guild for example) can run a central LFG server and then group leaders can advertise groups. Players can then look for groups and add themselves to waiting lists for groups.