Mosaic by @rcopstein alternatives

Rambox is a workspace organizer that allows you to unify as many applications as you want, all in one place. It is perfect for those who care about productivity while working with many business and personal apps.

Multrin is a cross-platform app built on top of Electron, that lets you to organize apps in tabs, by just dropping them onto Multrin. It aims to greatly improve your productivity and organization. If you like it, please leave a star on my Github. I would really appreciate that :)

Say goodbye to frustrating, hard-to-remember keyboard shortcuts! Lasso solves the problem with an easy-to-use grid system where you can click and drag to move and resize windows. Plus, with endless arrangement possibilities, you'll never feel limited to just halves and thirds.

Moom makes window management as easy as clicking a mouse button—or using a keyboard shortcut, if you're one of those types of people. With Moom, you can easily move and zoom windows to half screen, quarter screen, or fill the screen; set custom sizes and locations, and save layouts of opened windows for one-click positioning. Once you've tried Moom, you'll wonder how you used your Mac without it.

BetterSnapTool allows you to easily manage your window positions and sizes by either dragging them to one of the screen’s corners or to the top, left or right side of the screen. This enables you to easily maximize your windows, position them side by side or even resize them to quarters of the screen.

Snap windows by using gestures, keyboard shortcuts, dragging, or menu bar. Free for first 100 users with voucher code: FIRST100