Compare software

Elm vs Haskell: catalog facts
Elm	Haskell
Best for: Web developers who want a typed functional language for front ends	Best for: Developers who want a strongly typed functional language
Free Free and open source under the BSD-3-Clause licence.	Free Free and open source.
Windows, Command line	Windows, Command line
Compiler error messages explain problems and suggest fixes Type inference catches runtime errors at compile time All 4 strengths for Elm Compiler error messages explain problems and suggest fixes Type inference catches runtime errors at compile time Consistent program architecture across projects Online playground for trying the language	Strong static type system catches errors early Pure functions and immutability make code easier to reason about All 3 strengths for Haskell Strong static type system catches errors early Pure functions and immutability make code easier to reason about Online playground for trying it without installing
Only targets web front ends Interop with JavaScript libraries takes extra work	Steep learning curve for programmers used to imperative languages Lazy evaluation can make performance harder to predict
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: BSD-3-Clause
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for Elm elm-lang.org Catalog checked October 2, 2026	Official website Full listing and sources Sources for Haskell haskell.org Catalog checked October 2, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.