AutoLISP/DCL

AutoLISP

• Tutorials
• Developer's Guide
• Reference Guide
• AutoLISP Extension
• What's New and Changed

DCL

• Tiles Reference
• Predefined Attributes Reference for Tiles

ObjectARX

• Developer's Guide
• Reference Guide
• What's New | Changed

General Resources

• Customization
• Deploy Custom Programs with Plug-in Bundles
• DXF Reference

Connect

SDKs and Platforms

• Autodesk ObjectARX SDK
• Autodesk Platform Services (formerly Forge)

Online Resources

• Autodesk Developer Network
• AutoCAD Developer Center (Documentation Updates and Training Videos)

Blogs

• AutoCAD Blog - Basic AutoCAD Customization
• AutoCAD DevBlog - ADN Team
• Through the Interface - Kean Walmsley