Windowed Borderless Gaming is described as 'Play all your games in full screen windowed borderless mode. Remembers and resizes your game automatically to fit full screen after setting it the first time' and is an app in the Gaming Software category. There are four alternatives to Windowed Borderless Gaming for Windows and Steam. The best alternative is Borderless Gaming, which is both free and Open Source. Other great apps like Windowed Borderless Gaming are ShiftWindow (Free), Simple Runtime Window Editor (SRWE) (Free, Open Source) and Magic Borderless (Paid).
Borderless Gaming forces borderless-fullscreen mode in any game. Stream at any resolution while still being able to easily alt-tab out as if you were in windowed mode. No more risk of crashing in badly optimized games when you want to switch songs or check your email.
Simple Runtime Window Editor (SRWE) is a program that allows you to pick a running application and manipulate size, position, styles of its main/child windows. SRWE was built to maintain games that run in Windowed-mode.
Magic Borderless auto detects any games & applies your preferences. It also includes mouse locks, multi-monitor & widescreen goodies, volume manager, multitasking assistance, and privacy features like Ninja Mode.