Compare software

Haskell vs Elm: catalog facts
Haskell	Elm
Free Free and open source.	Free Free and open source under the BSD-3-Clause licence.
Windows, Command line	Windows, Command line
Strong static type system catches errors early Pure functions and immutability make code easier to reason about	Compiler error messages explain problems and suggest fixes Type inference catches runtime errors at compile time
Steep learning curve for programmers used to imperative languages Lazy evaluation can make performance harder to predict	Only targets web front ends Interop with JavaScript libraries takes extra work
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: BSD-3-Clause
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

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