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Janet vs LuaJIT: catalog facts
Janet	LuaJIT
Free Free and open source under the MIT licence.	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Entire language under 1MB in one binary Threads, networking and an event loop built in	High performance with a small memory footprint Drop-in replacement for the Lua 5.1 library
Smaller package ecosystem than mainstream scripting languages Lisp-style syntax takes adjustment for newcomers	Targets Lua 5.1 rather than newer Lua versions Usually built from source rather than installed from binaries
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.