21cmFAST Alternatives
Safer and better-maintained options, ranked by Nerq Trust Score. Updated 2026-05-02.
21cmFAST has a Nerq Trust Score of 60 (C). A semi-numerical cosmological simulation code for the 21cm signal
| # | Name | Trust | Grade | Stars | Key Difference |
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FAQ
What are the best alternatives to 21cmFAST?
The top alternatives based on Nerq Trust Score are listed above, all independently evaluated for security and reliability.
Is it safe to switch from 21cmFAST?
Check each alternative's safety report by clicking its name. Trust scores above 70 indicate strong reliability.
How does Nerq rank 21cmFAST alternatives?
Alternatives are ranked by Trust Score v2, combining security, maintenance, documentation, and community signals.