PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
Octobat for GoCardless - VAT compliance and billing automation, now with GoCardless
Pennywise - Cross-platform application to open any website or media in a floating window
Zercurity - Monitor your infrastructure for policy non-compliance, live
Afloat - Create beautiful invoices in 3 clicks, without mistakes
Task Muncher - Task Muncher is a cross-platform and web-based application that is designed to organize and keep the track of everything and focus on munching the weekly tasks.