Following a list of useful Links for EDI.

Link Description
ANSI X12 document list A list of the approved EDI ANSI X12 documents for EDI version 4 Release 1 (004010)
ANSI X12 EDIFACT list Gives you an overview of ANSI X12 and the corresponding EDIFACT message, e.g. 850 (X.12) and ORDERS (EDIFACT)
AS2 AS2 (Applicability Statement 2) is a specification about how to transport data securely and reliably over the Internet
EDIFACT (DE) Wikipedia entry for EDIFACT (german)
EDIFACT (EN) Wikipedia entry for EDIFACT (english)
EANCOM Have a look into GS1 EANCOM standards
GEPIR Search Global Electronic Party Information Registry. Search for GLN, GTIN/EAN, NVE/SSCC etc.
IDoc IDoc (Intermediate Document) is a SAP document format for business transaction data transfers
IDoc (Basics) IDoc basics for Functional Consultants
Notepad++ Notepad++ is a flexible and powerful EDI-Editor (freeware)
Notepad++ (portable) Notepad++ as a portable version, if you don't have admin rights on your computer (freeware)
ODETTE Pan-European collaboration and services platform for the entire automotive supply chain
OFTP/OFTP2 The Odette File Transfer Protocol (OFTP) is a protocol used for EDI between two communications business partners
RosettaNet GS1 US RosettaNet Standards
TRADACOMS TRADACOMS is an early standard for EDI primarily used in the UK retail sector. Have a look at the 25 transactions defined for this
UN EDIFACT Directories United Nations Directories for Electronic Data Interchange for Administration, Commerce and Transport
UN/EDIFACT Rules Electronic data interchange for administration, commerce and transport (EDIFACT) - Application level syntax rules
VDA VDA recommendations
X.400 X.400 is a suite of ITU-T Recommendations that define standards for Data Communication Networks for Message Handling Systems (MHS)
XML XML (Extensible Markup Language) is a markup language that defines a set of rules for encoding documents in a format that is human- and machine-readable