- iSeries Network - a comprehensive collection of resources for iSeries and AS/400 professionals.
- The Learning Center - store covering iSeries, Websphere and Lotus technologies.
- Midrange dot Com - resources for i5 / iSeries / AS/400 information on the internet.
- Ignite/400 - association of users, developers of IBM iSeries and related products.
- IBM iSeries Information Center
- ProData Computer Services, Inc - provider of IBM iSeries AS/400 utilities.
- BCD - a leader is iSeries - i5 Application Development and User Productivity Tools.
- Assignment400 - ERP Software, Business Management Software, Distribution Software.
- APICS - The Association for Operations Management
- APICS bookstore - source for essential inventory, operations, and supply chain books and resources
