Blender 4.3 to 5.2, in the Shader Editor, Geometry Nodes and the Compositor. Release testing was done on Windows with 4.3.2, 4.5.9 LTS and 5.2.2 LTS. macOS and Linux are expected to work but were not part of release testing.

Only while you click. Hold the key and click to spawn; release the key without clicking and it runs its original action. Shortcut conflicts with other presets are shown when you record a key, and you choose what happens.

Yes. The library is global, not stored in a .blend file. Node groups, materials and packable images used by a preset are stored with it and added to the new file when you spawn it.

Yes. Export the library or a single preset, and keep the exported JSON together with its .assets folder. Imports are checked for Python that would run by itself, but only import presets from sources you trust.

No. Install the new version over the old one and restart Blender; presets, shortcuts and preferences are kept. When switching from the regular ZIP to the Extension package, the extension copies your library on its first start.

No, it works alongside it. Node Wrangler edits and connects existing nodes; Node Quick Spawn saves your own node setups and brings them back with a key, search or drag.

Simulation and bake results, For Each zones, custom data from other add-ons, and external files such as movies, image sequences, caches and volumes. The save message tells you what was left out. See Known Limitations in the Documentation tab.