HexDump 32 free binary content viewer by Salty Brine Software
HexDump Free Binary Content Viewer  HexDump32 v2.0.0 – Binary Content Viewer
Download HexDump32
hd32install.exe  2.73MG

HexDump32 is a small Win32 utility which opens up a file and displays its data in hexadecimal and ASCII format. 

Note:  HexDump32 is not an editor.  The binary contents of files can be viewed but not modified.

Roland Fantom X Soundfont Free [verified] Online

You don’t need a DAW to test these.

Load your chosen Soundfont player VST onto a new instrument track. roland fantom x soundfont free

Simple, no-frills tools built specifically for dragging and dropping SF2 files. You don’t need a DAW to test these