Very low feature GHCi based IDE
A sensible starting Prelude template.
A Sublime Text 3 plugin for Haskell. Features cabal building, error and warning highlighting, smart completion and ghc-mod integration.
A formatter for Haskell source code
A gtk based status bar for tiling window managers such as XMonad
Haskell source code suggestions
:gemini: higher-order, no-boilerplate monads
OCaml Language Server Protocol implementation
Systems language with linear types and capability-based security.