Animated sprite editor & pixel art tool (Windows, macOS, Linux)
There's a full license section found at the bottom of the GitHub page as well but the FAQ answers your commercial-use question.
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.
[REQUEST][STEAM] ASEPRITE (Second Attempt)
3 projects | reddit.com/r/GiftofGames | 30 Jun 2022
How do I go about making my own sprites and tilemaps?
1 project | reddit.com/r/construct | 29 Jun 2022
500 year old woman casts a spell (everything dies) [oc]
1 project | reddit.com/r/Terraria | 25 Jun 2022
A lonely tower
2 projects | reddit.com/r/PixelArt | 15 Jun 2022
Making pixel art for Unity
1 project | reddit.com/r/gamedev | 14 Jun 2022