ChipVault is a VHDL and Verilog Chip Design Organization tool which improves
design efficiency by:
   - Providing the ability to Navigate and Edit files Hierarchically.
   - Automatically generating Schematic Component Port views of VHDL and
     Verilog RTL files.
   - Automating RTL instantiation and template generation.
   - Providing Revision Control (designed for HW, not SW development).
   - Supporting External Tool Hooks (bottom-up vcoms,etc).
   - Providing an Issue Tracking Log with sorting.
   - Providing Netlist sorting and hierarchy viewing.
   - Supporting web-sharing of RTL files (both encrypted and clear).
   - Fast and Nimble.

WWW: http://chipvault.sourceforge.net/