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Idris vs PureScript: catalog facts
Idris	PureScript
Free Free and open source under the BSD 3-Clause licence.	Free Free and open source under the MIT licence.
Windows, Command line	Windows, macOS, Linux, Command line
Types are first-class and can describe precise program properties Compiler can check assumptions and proofs before the program runs	Expressive type system with row polymorphism and type classes Compiles to readable JavaScript with easy interop
Small ecosystem compared with mainstream languages Dependent types have a steep learning curve	Smaller ecosystem than mainstream JavaScript or TypeScript Functional style has a learning curve for newcomers
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	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 2, 2026

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