The best alternatives to WallBot are Wallcat, Splashy, and Wallpaper by Behance. If these 3 options don't work for you, we've listed over 10 alternatives below.
What do you think of WallBot?
Tanka— Tanka = Slack + Glean, built for fast-growing startups.
Equinox is an app for creating macOS dynamic wallpapers. Starting macOS Mojave we have such cool things as «Dynamic Desktop», «Light and Dark Desktop» types of wallpapers. With the help of the Equinox app, you can easily create those with a few clicks.