nes
NESFab
https://pubby.games/nesfab.html
NESFab is a new programming language for creating NES games. Designed with 8-bit limitations in mind, the language is more ergonomic to use than C, while also producing faster assembly code. It's easy to get started with, and has a useful set of libraries for making your first — or hundredth — NES game.
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Added 2 years ago
NES Assets Workshop: NAW
https://nesrocks.itch.io/naw
NAW is a modern tool that enables the creation of art ready for use with NES development. Meant for artists, it imposes all NES limitations and gives you a WISIWYG workflow.