VSys Web is a synchronized (offline) system, which is only updated with the current information in your database when you explicitly run the synchronization process. As such it is limited:
Changes made in your system are not reflected in VSys Web immediately
Hours and applications entered by volunteers don't show up in your system immediately
Volunteers can't do live searches for jobs
Part of your data is held by an outside organization (Bespoke Software) as part of the process.
VSys Live is entirely different. Instead of being hosted by an outside company, VSys Live runs directly from within your IT department, works directly with your live database, and is 100% under your control. It also offers:
Secure (SSL) connections for volunteers
Live signup for jobs with realtime information about openings
Live hours entry
Tools for your volunteers to send you messages
Volunteers can update their existing data without filling out forms from scratch
But because VSys Live is hosted by you, there are greater requirements and implementation complexities.