Assembly:
- flat assembler (FASM) - Official Site.
- High Level Assembler (HLA) - Official Site
- Microsoft Macro Assembler (MASM32) - Official MASM32 HomePage
- Netwide Assembler (NASM) - Official Site
- The Art of Assembly Language - Great book for learning Assembly
Delphi/Object Pascal:
- Code Gear - Official Site for Delphi.
- Free Pascal - Official Site
- Delphi Basics - Online Delphi reference guide.
Lego NXT:
- Lego Mindstorms NXT - Official Site
- nxtasy.org - LEGO MINDSTORMS NXT community
- The NXT STEP - LEGO MINDSTORMS NXT Blog
- NXT Programming Software - List of Programming Language Frameworks