| perl540Packages.CryptScryptKDF | Scrypt password based key derivation function |
| haskellPackages.amazonka-kms | Amazon Key Management Service SDK |
| haskellPackages.int-multimap | A data structure that associates each Int key with a set of values |
| texlivePackages.kvoptions | Key value format for package options |
| haskellPackages.gogol-cloudkms | Google Cloud Key Management Service (KMS) SDK |
| zsh-system-clipboard | Plugin that adds key bindings support for ZLE (Zsh Line Editor) clipboard operations for vi emulation keymaps |
| haskellPackages.compactmap | A read-only memory-efficient key-value store |
| haskellPackages.downloader | A small, low-dependency library that provides turn-key file download over HTTP and HTTPS |
| haskellPackages.certificate | Certificates and Key Reader/Writer |
| texlivePackages.affilauthor | Tag author and affiliation information in a key-value style |
| haskellPackages.DescriptiveKeys | A library for specifying xmonad key bindings with functionality |
| haskellPackages.refined-containers | Type-checked proof that a key exists in a container and can be safely indexed |
| haskellPackages.justified-containers | Keyed container types with type-checked proofs of key presence |
| haskellPackages.composable-associations | Types and helpers for composing types into a single larger key-value type |