There are 8 repositories under spectrum-next topic.
ZEsarUX - ZX Second-Emulator And Released for UniX
Level 9 interpreter for Spectrum Next
Search and download files from the ZXDB Spectrum database using your ZX Next.
Z80N Forth system suitable to run on the new ZX Spectrum Next
Videotex TCP/IP server and client for the ZX Spectrum Next™.
Spectrum Next BMP tools
Miscellaneous small unrelated pieces of source code for ZX Spectrum Next (Z80N assembler sources)
Bare metal SDCC library for Z80.
Network neXt Time Protocol. Server in .NET Core, Clients for ZX Spectrum Next™ and .NET Core.
Fork of NexCreator, a big file format for the ZX Spectrum Next™.
ESP8266-01 in-circuit firmware updater for the ZX Spectrum Next™
Bean Brothers remake (Spectrum platform game)
VS Code tools for NextBASIC
Various plugins for CSpect, an emulator for the ZX Spectrum and ZX Spectrum Next™
A ZX Spectrum Next to Printer Gateway. Written in Python and NextZXOS BASIC, originally https://github.com/StalePixels/PrintStopPipsta
ZX Spectrum Next 320x192 image with 256 colour palette chosen from 512 colours.
"temporary" fork of ZEsarUX with some fixes of TBBlue (ZX Next) called "ZESERUse" - I don't plan to develop it actively, hoping Cesar will obsolete this by fixing mainline, but so far this is unfortunately vastly superior to current ZEsarUX 9.2 in terms of Next emulation, so still keeping this fork around...
An example of how to program the ZX Spectrum Next using Z88DK and C.
ZX Spectrum Next demo demonstrating creating .NEX files in the Zeus Assembler