Tobybear has put together a simple "MiniHost" VST Host for Windows, perfect for testing new plug-ins or preset making. Current release is v0.7.

Features:

• Supports ASIO audio drivers (you can optionally install the free ASIO4ALL driver for DirectX and older Multimedia driver support).
• Loads VST instruments and effects.
• Loads and saves presets (fxp) and banks (fxb) in both parameter and chunk format.
• WAV files can be loaded and played from the host to test VST effects.
• Audio output can be recorded as WAV (32 bit float and 16 bit integer).
• MIDI files can be loaded and played, the MIDI data is sent to the plugin.
• MIDI input from any Windows MIDI port is possible.
• The computer keyboard can also be used as a rudimentary MIDI input device.
• Virtual MIDI keyboard for 'mouse playing'.