Hi cisco8887,
There are 2 types of SSL VPN supported on the cisco ASA and some cisco routers.
The SVC client is known as Anyconnect client , it needs to be manually installed on your computer. It is also known as VPN client or SSL client.
The WebVPN is the browser-based VPN , you need to open a web browser in order to access this service, is also known as thin-client or SSL clientless.
Hope it helps
-Randy-