Amulet Map Editor
NBTExplorer.net
NBT Studio
9minecraft
Geyser
Chunker
Minecraft
Universal Minecraft Editor is a software that allows you to modify the files of a minecraft world (NBT, items, mobs ...)

openDesktop.org
SourceForge
OSOR
Eclipse
OW2
OStatic
SchoolForge.net
Freecode (formerly known as Freshmeat) is one of the legit open source development platforms that will be the key for developers and programmers to have a streamlined process via having enhanced collaboration and coding leverages.

Which is more popular?
Based on our record, Universal Minecraft Editor should be more popular than Freecode. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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UME
Universal Minecraft Editor
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| Website | universalminecrafttool.com | freshmeat.sourceforge.net |
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What each product offers, as listed by its team.

No features have been listed yet.
Possible disadvantages
Walkthroughs and reviews on video.
Universal Minecraft Editor First Impression (New Free Minecraft Console Editing Tool)
FreeCodeCamp Review 2022 - Is FreeCodeCamp worth it?
More videos
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Universal Minecraft Editor and Freecode. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

If you're lazy you can use Universal Minecraft Editor (Windows only, can open worlds from mobile versions). Source: over 4 years ago
If you don't like the time limitation, you can additionally download Universal Minecraft Editor where you can manipulate the demo time (there are also tutorials on youtube for this). Source: about 5 years ago
You have to somehow extract the structure from world files (stored in LevelDB format so there is no one file which contains the structure). You can try Universal Minecraft Editor which is Windows-only but can handle worlds from Android... Source: over 5 years ago
Years ago, when https://sourceforge.net was still a thing thing, they had a freshmeat subdomain for this sort of thing. I'm hoping this will be a better, more engaging way to achieve the same objectives--for Java projects. Source: almost 4 years ago
Http://freshmeat.sourceforge.net/ "Content may be stale" indeed (from the header)... - Source: Hacker News / over 4 years ago
When comparing Universal Minecraft Editor and Freecode, you can also consider the following products.

The Amulet Map Editor is a new and innovative Minecraft map editor made by the Amulet Team, a team formed by the contributors that brought you MCEdit-Unified
Compare Amulet Map Editor to Universal Minecraft Editor or Freecode:

The website openDesktop.
Compare openDesktop.org to Universal Minecraft Editor or Freecode:

NBTExplorer is a free, open-source graphical editor for Minecraft NBT data, allowing users to edit world files, player data, and region files with ease.
Compare NBTExplorer.net to Universal Minecraft Editor or Freecode:

The Complete Open-Source and Business Software Platform.
Compare SourceForge to Universal Minecraft Editor or Freecode:

An up-to-date NBT viewer and editor with lots of new features
Compare NBT Studio to Universal Minecraft Editor or Freecode:

OSOR is the Open Source Observatory, a project to provide a framework for developing and executing autonomous observations.
Compare OSOR to Universal Minecraft Editor or Freecode: