Klive IDE vs SpeccySE

Klive IDE combines a retro-computer emulator with development tools for Sinclair Z80-based machines. It supports Z80 Assembly, ZX BASIC (Boriel's Basic) and SJASMPLUS; its native assembler is built in, while the latter two rely on external toolchains. A one-click workflow compiles a program, places it in the emulated machine, then runs or debugs it with breakpoints. Active emulators cover ZX Spectrum 48K and 128K, ZX Spectrum +2E/+3E, and Cambridge Z88; ZX Spectrum Next support is in progress. The Monaco-based editor provides VS Code keyboard shortcuts, syntax highlighting, diagnostics, code folding and symbol navigation. Debug views include CPU and ULA state, memory, disassembly, watches, BASIC listings and system variables. Klive loads TAP and TZX tape files and DSK disks for ZX Spectrum +3E, and exports TAP, TZX or Intel HEX. It also offers a scripting engine for commands and build pipelines, and can record emulator video with stereo audio. The IDE is free, MIT licensed, and available for macOS, Windows and Linux.

SpeccySE has no write-up on Specifiction yet; its figures are above.