Skysa is described as 'The Skysa App Bar is a web app platform which enhances any website or blog; giving you the ability to add over 50 apps like Live Support Chat, Instant Messaging and Announcements. Once setup the Skysa Bar displays on your webpage at the bottom or top (your choice) of the browser' and is an website. There are eight alternatives to Skysa, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Android apps. The best Skysa alternative is Shareaholic, which is free. Other great sites and apps similar to Skysa are ShareThis, Mojo Helpdesk, Live Chat 3 and AddShoppers.
this is missing other key or useful functions that skysa has.