Requires the library mod Hybrid.

Tree Harvester is a mod (a Hytale Java plugin) that tweaks the mechanics around chopping trees. While Hytale has basic tree felling functionality built-in, the mod expands on this adding some QoL. By default a tree is only "harvested" while crouching.

Tree roots are automatically broken, and dropped at the initial chopped log position. The hole is filled with the type of dirt from the surrounding blocks. Afterwards a sapling is placed at the position where the tree was felled.

Everything can be configured to your personal preferences. Don't want to automatically replace a sapling? Just disable it :)

Configurable: ( how do I configure? )
enableTreeHarvester (default = true)
playerMustCrouch (default = true)
mustHoldHatchet (default = true)
allowBrokenHatchet (default = true)
fillTreeRootsHole (default = true)
dropLogsAtFirstBrokenBlock (default = true)

dropTreeLeaves (default = false)
addSaplingDropChanceFromLeaves (default = true)
saplingDropChance (default = 0.05)
plantSaplingAfterHarvestIfFound (default = true)

decreaseDurabilityPerHarvestedLog (default = true)
durabilityPerHarvestedLog (default = 0.1)

Showcase:
An example of a player chopping a tree. Roots removed, hole filled:

Another example where you can see the sapling automatically being replaced:

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You may freely use this mod in any mod collection, as long as the download remains hosted within the CurseForge ecosystem.

Serilum.com contains an overview and more information on all mods available.

Comments are disabled as I'm unable to keep track of all the separate pages on each mod.
For issues, ideas, suggestions or anything else there is the Github repo. Thanks!