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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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bismuth
KDE Plasma add-on, that tiles your windows automatically and lets you manage them via keyboard, similarly to i3, Sway or dwm.
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HeroicBashLauncher
Directly launch any Epic Games Store and GOG game from anywhere without Heroic on Linux.
SteamOS is based on Arch Linux, a popular rolling-release (constantly updating) distribution of Linux. Most Linux users will point you to the Arch Wiki as the best place to get up-to-date information and tutorials on how to configure a Linux system.
I recommend against using Manjaro. The leadership behind it has consistently made poor choices that have lead to issues affecting not just Manjaro but other distros as well. This and this have some more information on why you might want to reconsider using Manjaro. Both recommend using EndeavourOS instead as it also uses Arch Linux as the base but provides any easy to use GUI installer.
I recommend against using Manjaro. The leadership behind it has consistently made poor choices that have lead to issues affecting not just Manjaro but other distros as well. This and this have some more information on why you might want to reconsider using Manjaro. Both recommend using EndeavourOS instead as it also uses Arch Linux as the base but provides any easy to use GUI installer.
Personally the distros I use most are Pop_OS!, Ubuntu, and Arch. Pop_OS! for home use usually just works. I run it on my HTPC for couch gaming, hosting some basic media services (like jellyfin), and running a Minecraft server. Ubuntu is the go-to for professional work as it is supported by nearly everything. Arch is what I use on my daily driver laptop (not for gaming). Despite being bleeding edge I find that I have less issues with updates in Arch and spend less time maintaining the distro once it is up and running. I don't recommend it unless you are comfortable with the commandline, though. I also cannot comment on how it works with gaming, but seeing as it is used as the base for SteamOS, I assume it works decently well.
bspwm
Pop-Shell might satisfy that need for you.
I'm using a 49" ultrawide as well and FancyZones on Windows (only for VR-gaming though), and I really like the Bismuth KDE extension for window tiling on Linux: https://github.com/Bismuth-Forge/bismuthExcept for the possibility to place multiple windows inside the same tile (you can have a stacking layout, but you can't for example stack windows in a single column in the 3-column-layout), Bismuth is in my opinion at least as good or even better than FancyZones.
Hackintoshes are so 2010--the real chads install elementaryOS (or Asahi + Pantheon) on their macbooks.
I've previously used Heroic Bash Launcher for that. It generates a script that opens the game in exactly the same way Heroic does, and you can then add the script as a non steam game.
I've since moved to manually writing the scripts using Legendary but I'm also a massive nerd so if you're still interested in touching grass, option 1 is probably the best.