Instant Housecall is described as 'remote access software lets you view and control remote computers through firewalls. Free for personal use' and is an app in the Network & Admin category. There are more than 50 alternatives to Instant Housecall for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is TeamViewer. It's not free, so if you're looking for a free alternative, you could try DWService or NoMachine. Other great apps like Instant Housecall are AnyDesk (Paid), Zoho Assist (Freemium), LogMeIn (Paid) and UltraViewer (Free Personal).
DWService is an open source project which offers a service that allows access to remote systems (Windows, Mac, Linux, Raspberry...) using a standard web browser - without any component required on the client side.
Support customers on a remote computer easily through web-based, on-demand remote support sessions. Set up unattended remote access and manage remote PCs, laptops, mobile devices, and servers effortlessly.
LogMeIn gives you fast, easy remote access to your PC or Mac from your browser, desktop and mobile devices. Premium features like file transfer, file sharing and remote printing help you stay connected and productive wherever you go.