Alternatives and similar repositories for perhaps:

Users that are interested in perhaps are comparing it to the libraries listed below

• isovector / do-notation
  deprecated in favor of -XQualifiedDo
  ☆41Updated 3 years ago
• int-index / union
  Extensible type-safe unions for Haskell
  ☆33Updated this week
• ekmett / structs
  Exploring how to make a strict imperative universe in the GHC runtime system.
  ☆48Updated 3 months ago
• twanvl / simple-reflect
  Simple reflection of expressions
  ☆33Updated 3 years ago
• obsidiansystems / dependent-sum
  Dependent sums and supporting typeclasses for comparing and displaying them
  ☆55Updated last year
• serokell / o-clock
  Type-safe time units in Haskell
  ☆49Updated last month
• byteverse / colonnade
  Generic types and functions for encoding and decoding columns
  ☆43Updated 4 months ago
• hackage-trustees / hackage-cli
  CLI tool for Hackage
  ☆26Updated 2 months ago
• Gabriella439 / Haskell-Total-Library
  Exhaustive pattern matching using lenses, traversals, and prisms
  ☆32Updated 2 years ago
• reinerp / indexed
  Haskell98 indexed functors, monads, comonads
  ☆25Updated 3 years ago
• Gabriella439 / managed
  A monad for managed values
  ☆50Updated 2 years ago
• camfort / reprinter
  Scrap Your Reprinter - A Datatype Generic Algorithm for Layout-Preserving Refactoring
  ☆27Updated 3 years ago
• robrix / semilattices
  join and meet semilattices, lower and upper bounds.
  ☆43Updated 5 months ago
• gelisam / typelevel-rewrite-rules
  rewrite rules for type-level equalities
  ☆62Updated 10 months ago
• konn / equational-reasoning-in-haskell
  Agda-style equational reasoning in Haskell
  ☆52Updated 2 months ago
• andrewthad / primitive-containers
  Map and Set over contiguous memory
  ☆21Updated last year
• kowainik / type-errors-pretty
  💄🐞 Combinators for writing pretty type errors easily
  ☆55Updated 3 years ago
• spinda / liquidhaskell-cabal
  💧 Liquid Haskell integration for Cabal and Stack
  ☆23Updated 5 years ago
• Lysxia / generic-recursion-schemes
  Folds for recursive types with GHC Generics
  ☆26Updated 4 years ago
• qfpl / tasty-hedgehog
  Tasty integration for the Hedgehog property testing library
  ☆38Updated 4 months ago
• emilaxelsson / trackit
  A command-line tool for live monitoring
  ☆25Updated 2 years ago
• patrickt / empathy
  a modern library for typed path manipulation in Haskell
  ☆36Updated 3 years ago
• NorfairKing / easyspec
  Signature inference for Functional Property Discovery in Haskell
  ☆38Updated 7 years ago
• sellout / dredd
  Automatic type class law checking.
  ☆24Updated 2 months ago
• atzeus / type-aligned
  Various type-aligned sequence data structures.
  ☆20Updated 3 years ago
• schell / varying
  Continuously varying values, made easy :)
  ☆40Updated 5 years ago
• byteverse / json-syntax
  High-performance JSON parser
  ☆26Updated 10 months ago
• haskell-compat / deriving-compat
  Backports of GHC deriving extensions
  ☆13Updated 2 weeks ago
• SuperpowersCorp / refactorio
  Refactorio is a tool with which you build and maintain software.
  ☆19Updated 9 months ago
• bgamari / monoidal-containers
  Maps using values' monoidal structure during merging
  ☆42Updated 3 months ago