Thanks for asking. Founder here. Singlebox is one of 6 products I developed. I started alone with a translation app for Windows (https://webcatalog.io/translatium/) back in 2014 and then scaled it up with new products.
I started working (again alone) on WebCatalog and Singlebox (two different products with the same tech core) in 2018 and slowly scaled up the business. I incorporated the company last year and hired my first employee last month.How is maintaining so many integrations? It takes time. But in general, the app's architecture is quite flexible so it's not too challenging for us to scale up. It's just a web browser that loads different web services - these web services are sandboxed (each working in an independent browser instance) - allowing you to log into multiple accounts at once.