Microsystems Prototyping Laboratory VHDL Model Collection
- VHDL models from Mississippi State University
- http://www.erc.msstate.edu/mpl/distributions/vhdl/

Micron Technology
- VHDL, Verilog, and IBIS models of Micron's memory products
- http://www.micron.com/

The Hamburg VHDL Archive
- We intend to provide a collection of free, i.e. public-domain or shareware, VHDL documentation, models, and tools.
- http://tech-www.informatik.uni-hamburg.de/vhdl/vhdl.html

Digital Core Design
- Synthesizable VHDL and Verilog HDL IP Cores.
- http://www.dcd.pl