What are some alternatives?
When comparing Sine and SwipedOn, you can also consider the following products
The Receptionist - The Receptionost is a visitor managemnt solution that has visitor logging system to track visitor traffic.
Envoy - Visitor registration that's changing how guests are greeted in companies around the world.
TractionGuest - A smarter welcome for your visitors.
HarmonyPSA - HarmonyPSA - Professional Services Automation (PSA) for IT Businesses
WhosOnLocation - WhosOnLocation is a visitor management system that makes it easy for reception teams and/or non-manned reception areas to know their visitor.
JOnAS - JOnAS is a leading edge Java EE 5 certified Open Source OSGi Enterprise Server by OW2.