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Based on our record, LibreSprite should be more popular than OGMO Editor. It has been mentiond 4 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Maybe you could use something like Tiled (https://www.mapeditor.org/) or Ogmo (https://ogmo-editor-3.github.io/). They're meant to be level editors but you can also define custom metadata for tiles. And if these tools aren't suitable I would probably write my own simple editor. Source: about 3 years ago
All of them can, you just have to write the parser yourselves. I prefer to use Ogmo. Source: about 4 years ago
In the end of the post Noel mentions Aseprite, but he might be interested in Libresprite as well? https://libresprite.github.io/. - Source: Hacker News / 13 days ago
LibreSprite is a nice free one that's forked from Aseprite. Source: over 2 years ago
LibreSprite is an older version (a fork) that has downloads. Source: almost 3 years ago
I have also seen Aseprite being recommended. It looks nice and I'm sure it works well, but it is not open source unfortunately. There is an open source alternative called LibreSprite, which seems to mimic Aseprite quite closely. Source: over 3 years ago
Tiled Map Editor - Tiled is a general purpose tile map editor.
Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
LDtk - User-friendly, open-source 2D map editor.
Pixelorama - Free and open source sprite editor and animator, ideal for pixel art.
TuDee - Old but still popular, ugly but powerful. Features include: Tile sets; Maps; Layers;
Piskel - Piskel is a website where designers online create sprites or pixel art.