vault alternatives and similar packages

Based on the "Data" category.
Alternatively, view vault alternatives based on common mentions on social networks and blogs.

semantic-source

10.0 9.5 vault VS semantic-source

Parsing, analyzing, and comparing source code across many languages
lens

10.0 5.7 vault VS lens

Lenses, Folds, and Traversals - Join us on web.libera.chat #haskell-lens

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hnix

9.9 6.4 vault VS hnix

A Haskell re-implementation of the Nix expression language
text

9.8 7.8 vault VS text

Haskell library for space- and time-efficient operations over Unicode text.
code-builder

9.8 0.0 vault VS code-builder

Packages for defining APIs, running them, generating client code and documentation.
Frames

9.7 4.5 vault VS Frames

Data frames for tabular data.
cassava

9.7 0.0 vault VS cassava

A CSV parsing and encoding library optimized for ease of use and high performance
massiv

9.7 0.0 vault VS massiv

Efficient Haskell Arrays featuring Parallel computation
unordered-containers

9.7 7.4 vault VS unordered-containers

Efficient hashing-based container types
compendium-client

9.7 0.0 vault VS compendium-client

Mu (μ) is a purely functional framework for building micro services.
holmes

9.6 0.0 vault VS holmes

A reference library for constraint-solving with propagators and CDCL.
hashable

9.6 4.0 vault VS hashable

A class for types that can be converted to a hash value
critbit

9.5 0.0 vault VS critbit

A Haskell implementation of crit-bit trees.
refined

9.5 0.8 vault VS refined

Refinement types with static checking
resource-pool

9.5 0.0 vault VS resource-pool

A high-performance striped resource pooling implementation for Haskell
binary

9.5 0.0 vault VS binary

Efficient, pure binary serialisation using ByteStrings in Haskell.
alfred-margaret

9.5 8.5 vault VS alfred-margaret

Fast Aho-Corasick string searching
primitive

9.5 5.2 vault VS primitive

This package provides various primitive memory-related operations.
caledon

9.4 0.0 vault VS caledon

higher order dependently typed logic programing
aeson-qq

9.4 0.0 vault VS aeson-qq

JSON quasiquoter for Haskell
jump

9.4 0.0 vault VS jump

Jump start your Haskell development
higgledy

9.4 0.0 vault VS higgledy

Higher-kinded data via generics
discrimination

9.4 3.9 vault VS discrimination

Fast linear time sorting and discrimination for a large class of data types
hashtables

9.4 0.8 vault VS hashtables

Mutable hash tables for Haskell, in the ST monad
json-autotype

9.4 2.6 vault VS json-autotype

Automatic Haskell type inference from JSON input
network-msgpack-rpc

9.4 vault VS network-msgpack-rpc

A MessagePack-RPC Implementation
data-msgpack

9.4 vault VS data-msgpack

A Haskell implementation of MessagePack
certificate

9.3 0.0 vault VS certificate

Certificate and Key Reader/Writer in haskell
audiovisual

9.3 4.2 vault VS audiovisual

Extensible records, variants, structs, effects, tangles
IORefCAS

9.3 0.0 vault VS IORefCAS

A collection of different packages for CAS based data structures.
dependent-sum

9.3 0.0 vault VS dependent-sum

Dependent sums and supporting typeclasses for comparing and displaying them
reflection

9.3 3.6 vault VS reflection

Reifies arbitrary Haskell terms into types that can be reflected back into terms
cereal

9.3 3.8 vault VS cereal

A binary serialization library
diskhash

9.3 1.7 vault VS diskhash

Diskbased (persistent) hashtable
dependent-map

9.3 0.0 vault VS dependent-map

Dependently-typed finite maps (partial dependent products)
streaming

9.2 0.0 vault VS streaming

An optimized general monad transformer for streaming applications, with a simple prelude of functions
avro

9.2 3.8 vault VS avro

Haskell Avro Encoding and Decoding Native Support (no RPC)
stdio

9.2 0.8 vault VS stdio

Haskell Standard Input and Output
orgmode-parse

9.2 0.8 vault VS orgmode-parse

Attoparsec parser combinators for parsing org-mode structured text!
bifunctors

9.2 3.1 vault VS bifunctors

Haskell 98 bifunctors, bifoldables and bitraversables
rei

9.2 0.0 vault VS rei

Process lists easily
safecopy

9.2 3.2 vault VS safecopy

An extension to Data.Serialize with built-in version control
protobuf

9.2 1.1 vault VS protobuf

An implementation of Google's Protocol Buffers in Haskell.
tables

9.1 0.0 vault VS tables

Deprecated because of
b-tree

9.1 0.6 vault VS b-tree

Haskell on-disk B* tree implementation
scientific

9.1 0.0 vault VS scientific

Arbitrary-precision floating-point numbers represented using scientific notation
uuid

9.1 0.0 vault VS uuid

A Haskell library for creating, printing and parsing UUIDs
witherable

9.1 4.0 vault VS witherable

Filter with effects
uuid-types

9.1 0.0 vault VS uuid-types

A Haskell library for creating, printing and parsing UUIDs
MemoTrie

9.1 0.0 vault VS MemoTrie

Trie-based memo functions

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README

Vault is a tiny library that provides a single data structure called vault.

A vault is a type-safe, persistent storage for values of arbitrary types. Like IORef, I want to be able to store values of any type in it, but unlike IORef, I want the storage space to behave like a persistent, first-class data structure, as appropriate for a purely functional language.

It is analogous to a bank vault, where you can access different bank boxes with different keys; hence the name.

In other words, a vault is an abstract data type with the following basic signature

data Key a
data Vault

newKey :: IO (Key a)
empty  :: Vault
lookup :: Key a -> Vault -> Maybe a
insert :: Key a -> a -> Vault -> Vault
delete :: Key a -> Vault -> Vault

A few common functions for finite maps, like adjust and union, are provided as well.

This library was created thanks to the feedback on my blog post Vault - a persistent store for values of arbitrary types.