Crystal

A Crystal library providing binary search helpers for maintaining and querying sorted Arrays efficiently.

A pure Crystal implementation of the BlurHash algorithm for encoding images into compact ASCII strings.

A compile-time trie data structure implementation for the Crystal programming language.

A Crystal library for generating HOTP and TOTP codes for two-factor authentication.

A simple linked list data structure implementation for the Crystal programming language.

A pure Crystal vector math library providing 2D, 3D, and 4D vector operations, matrix transformations, and quaternions.

A generic algorithm library for Crystal programming language providing implementations of common algorithms and data structures.

A comprehensive collection of data structures and algorithms implemented in the Crystal programming language.

A Crystal library implementing chronologically sortable UUIDs with embedded timestamps and identifiers.

A Crystal library implementing edit distance algorithms including Levenshtein, Damerau-Levenshtein, Optimal Alignment, Jaro, and Jaro-Winkler.

A Crystal port of the Fzy fuzzy finder algorithm for fast and accurate string matching.

A fast and efficient QR, Micro QR, and rMQR Code encoder/decoder library written in Crystal.

A Crystal library providing comprehensive graph data structures and algorithms for the Crystal programming language.

A Crystal implementation of the Haversine formula for calculating distances between geographic coordinates.

A Crystal language implementation of the HMAC-based Extract-and-Expand Key Derivation Function (HKDF) for cryptographic key derivation.

A Crystal implementation of K-Dimensional Trees for efficient nearest neighbor searches in multidimensional spaces.

A Crystal implementation of K-Sortable Globally Unique IDs for generating time-ordered unique identifiers.

A Crystal library for building Markov Chains and running Markov Processes.

A multiset (bag) data structure implementation for the Crystal programming language.

A Crystal implementation of RFC 6920 for generating and verifying Named Information (ni://) URIs from data hashes.

A native QR code generator for Crystal with no external dependencies, supporting text, SVG, and PNG output.

A radix tree (prefix tree) implementation for the Crystal programming language, optimized for URL routing and path matching.

A Crystal library for mapping latitude and longitude coordinates to S2 Cells for geospatial indexing.

A pure Crystal implementation of the Secure Remote Password protocol (SRP-6a) for secure password authentication.

A Crystal implementation of the SPAKE2+ Password Authenticated Key Exchange protocol, used by the Matter smart home standard.

A Crystal implementation of a Splay Tree with a hash-like interface, featuring leaf pruning and fast non-splaying searches.

A Crystal language implementation of the Verhoeff checksum algorithm for error detection in numeric data.

An original proof-of-work blockchain platform for building decentralized applications quickly and cheaply.

A Crystal-based framework for rapid blockchain and dApp prototyping with a built-in explorer.

A native Crystal library implementing the Secp256k1 elliptic curve for cryptographic operations used in Bitcoin, Ethereum, and Polkadot.

Crystal C bindings for Augeas, enabling configuration file parsing and manipulation.

Libclang bindings for Crystal with an automatic C bindings generator.

Crystal bindings for libncursesw with a high-level CRT class for terminal UI development.

Crystal language bindings for the GNU Scientific Library (GSL), providing access to numerical and scientific computing functions.

Crystal language bindings for the Hunspell spell-checking and morphological analysis library.

Crystal bindings for the Duktape JavaScript engine, enabling JavaScript evaluation and interoperability within Crystal applications.

Crystal language wrapper for the FFTW 3 library, enabling high-performance Fourier transforms.

A Crystal shard providing an idiomatic FFI wrapper for libgphoto2 to control digital cameras.

Crystal language bindings for Linux GPIO character device interface (libgpiod).

A Crystal language binding and wrapper for the ICU library, providing Unicode and internationalization support.

Crystal bindings for GNOME's Libnotify library to display desktop notifications.

A Crystal language wrapper for the NLopt nonlinear optimization library, providing access to 43 optimization algorithms.

Crystal high-level bindings for libpcap, providing a rich interface for packet capture and analysis.

A Crystal shard that adds OpenBSD's pledge(2) system call for process sandboxing and security hardening.

A Crystal language binding for libssh2 that provides SSH, SCP, and SFTP client functionality.

Adds syslog functionality to Crystal via LibC bindings for system logging.

Crystal language bindings for Video4Linux2 (v4l2) to capture video frames from Linux devices with minimal latency.

A complete and mature WebAssembly runtime for the Crystal programming language, enabling safe and fast execution of Wasm modules.

Crystal language bindings for the Win32 API, enabling Windows system programming.

Crystal bindings for libxdo, enabling programmatic X11 window management and automation.

A Crystal key/value store with configurable expiration for caching serializable objects.

A pure Crystal implementation of a Memcached client supporting binary protocol operations.

A robust DSL for writing command line interfaces in the Crystal programming language.

A Crystal library for creating CLI-based commands with argument parsing and help generation.

A simple declarative command line interface builder for Crystal with compile-time validation.

A slim and intuitive command-line interface builder for the Crystal programming language.

A modular, non-macro-based command-line interface library for Crystal, offering full control over CLI design without embedded macros.

A command-line interface builder for the Crystal programming language with automatic parsing, validation, and help generation.

A lightweight native Crystal library for building interactive text-based command line interfaces (TUI).

A flexible Crystal CLI builder with native subcommands, fuzzy matching, and reusable parsers, inspired by OptionParser.