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How do I verify a credit card checksum?

See Also

Inactive Orbits: (Not included on this page)

Symphero: Open Source eCommerce - An open-source e-commerce suite for Linux and other Unix-like operating systems, supporting multiple databases (currently MySQL, PostGRES and Solid 2.x), distributed object storage (in beta), and advanced marketing and affiliate tracking capabilities. {(L)GPL}

SQL-Ledger Accounting - Multiuser webbased accounting system written in perl, data entry and display through web browser, data is stored in a SQL server. Fully customizable, can be used with different companies / departments. {(L)GPL}

Open Finance {(L)GPL}

GRAPES - GNU Resource for Access-control, POS, & Electronic-security Systems. The main goal of this project is to produce a well-defined set of interfaces and guidlines that will allow seamless compatability between such software from different vendors. {(L)GPL}

Open VAR Engine - A project that will have as ultimate target the development of a Value at Risk engine that can be used to calculate Value at Risk figures for a variety of finantial portfolios. The documentation of this engine will be publically available as well as th {(L)GPL}

WebAccountant - WebAccountant is a complete web-based accounting system. {(L)GPL}

poorSAP - This website is the official website to inform you about progresses with poorSAP. In short: poorSAP is something like a 'crippled' version of a well known huge program, but not related to it anyway. {(L)GPL}

GNU Open ERP - Project to Create a ERP (Enterprise Resource Planning) like SAP, PeopleSoft, Etc. The development is based in Postgress SQL and the client applications must be WEB based. if the complexity is high we try to development in GNOME {(L)GPL}

ecPHP - ecPHP, e-commerce with PHP, is a e-commerce packages developed by PHP4 and MySQL. Those packages are ecAccounting, ecInventory and ecShopping. {BSD-like}

Custard Pot - Custard Pot is a web adminstered e-commerce engine that allows single stores and virual communities to operate on the Internet. {BSD-like}

Barcode Warehousing System - The Barcode Warehousing System currently consists of BarWare. BarWare is used with PHP and MySQL to manage warehousing with barcodes when used with a client such as a desktop with a scanner or a wireless scanner. {(L)GPL}

BugInventory Management - BugInventory Management System allows you to monitor efficiency and profits by tracking every transaction in detail, increasing stock turnover, reporting shortages and overages, and providing an easy physical count procedure.

BugMall Shopping Cart - BugMall Shoppingh Cart is a Web Commerce infrastructure you can outsource, one that lets you focus on the things you really need to.

Other Applications and Utilities

perl5 module to validate/generate credit card checksums/names. p5-Business-CreditCard-0.21 Perl5 module to validate/generate credit card checksums/names

Other Libraries, Functions, and Components