biomed vs SkyBlue MCEE Minecraft Tools

biomed is a free Minecraft biome editor for Java world saves containing level.dat and a region directory. Choose a biome and use Fill or Draw tools to apply it on the map, then switch between biome and map views. Its Fix Snow/Ice tool melts snow and ice in warm biomes and adds it in cold biomes. Open a savegame through File > Open World or select the map’s region directory manually; save edits through File > Save. The editor supports region editing and batch operations, but not terrain or entity editing. It runs on Linux, macOS, and Windows and requires GTK 2.x. Precompiled downloads are listed for 64-bit Linux and 32-bit Windows. The software is free under the MIT license, which permits use, modification, distribution, and sale subject to its conditions. The license provides the software as-is and disclaims warranty. The README advises backing up maps before editing.

SkyBlue MCEE Minecraft Tools has no write-up on Specifiction yet; its figures are above.