Packages

Kit has a growing ecosystem of packages that extend its capabilities. Packages provide integrations with databases, web services, data formats, and more.

Installing Packages

Add a package to your project from a Git URL:

kit add https://gitlab.com/kit-lang/packages/kit-postgres

Or add it directly to your kit.toml:

[dependencies]
postgres = { git = "https://gitlab.com/kit-lang/packages/kit-postgres" }

# Pin to a specific tag
curl = { git = "https://gitlab.com/kit-lang/packages/kit-curl", tag = "v2026.3.7" }

# Pin to a specific branch
yaml = { git = "https://gitlab.com/kit-lang/packages/kit-yaml", branch = "main" }

Then run kit install to fetch dependencies.

1st-party Packages

The packages below are maintained by the Kit team and available on GitLab. Third-party packages can be hosted anywhere and installed via kit add.

Web & HTTP Services

kit-crooner

A Sinatra-inspired web framework for Kit

kit-curl

libcurl bindings for Kit - HTTP client for GET, POST, PUT, DELETE requests

kit-oauth

OAuth 2.0 client library for Kit

kit-odata

OData v4 client for Kit - query builder, filtering, and pagination

kit-tea-web

Browser runtime for Kit TEA applications

kit-template

Simple templating engine for Kit

kit-jwt

JSON Web Token (JWT) encoding and decoding for Kit

Networking & Messaging

kit-websocket

WebSocket client and server for Kit using native Zig FFI (RFC 6455)

kit-smtp

SMTP email client for Kit using native Zig FFI

kit-nats

NATS client for Kit using native Zig FFI

kit-zmq

ZeroMQ bindings for Kit via czmq - high-performance messaging for distributed applications

kit-mqtt

MQTT protocol client bindings for Kit

kit-nng

NNG (nanomsg-next-gen) lightweight messaging library bindings for Kit

kit-libuv

Asynchronous I/O library wrapping libuv for Kit

Databases & Storage

kit-postgres

PostgreSQL bindings for Kit using libpq

kit-sqlite

SQLite bindings for Kit

kit-duckdb

DuckDB bindings for Kit - in-process analytical database

kit-mongoc

MongoDB C driver (libmongoc) bindings for Kit

kit-cassandra

Apache Cassandra client for Kit using CQL Native Protocol

kit-redis

Redis client for Kit using native Zig FFI

kit-hiredis

Hiredis minimalistic Redis client bindings for Kit

kit-lmdb

LMDB embedded key-value store bindings for Kit

kit-query

Fluent SQL query builder for Kit

kit-pg-parser

PostgreSQL SQL parser - parse, validate, normalize, and fingerprint SQL queries using libpg_query

Cloud & Distributed Systems

kit-aws-core

AWS core library - credentials, signing, and shared utilities

kit-aws-s3

AWS S3 client for Kit

kit-azure-core

Azure core library - authentication, configuration, and shared utilities

kit-azure-storage

Azure Blob Storage client for Kit

kit-gcp-core

GCP core library - authentication, project config, and shared utilities

kit-gcp-storage

GCP Cloud Storage client for Kit

kit-dapr

Dapr (Distributed Application Runtime) client for Kit

kit-health-check

Health check types, runner, and JSON output for Kit cloud deployments

kit-otel

OpenTelemetry observability for Kit — metrics, traces, and log correlation

AI & Machine Learning

kit-mcp

MCP (Model Context Protocol) server library for Kit — stdio and Streamable HTTP transports

kit-mcp-ui

MCP-UI support for Kit — rich UI rendering in MCP tool results

kit-embeddings

Lightweight vector embeddings store for RAG applications

kit-factgraph

Knowledge graph for modeling facts, rules, and calculations in Kit

Data Processing & Analytics

kit-arrow

Apache Arrow columnar data format for Kit

kit-parquet

Apache Parquet columnar storage format for Kit

kit-dataframe

High-performance columnar DataFrame for Kit with SIMD acceleration

kit-transducer

Clojure-inspired transducers for composable, reusable transformations

kit-kts

Kit Term Storage - fast, concurrent in-memory tables inspired by Erlang's ETS

kit-libcsv

CSV parsing and generation library for Kit using libcsv

Data Formats & Serialization

kit-flatbuf

FlatBuffers binary serialization for Kit - zero-copy read access

kit-protobuf

Protocol Buffers binary serialization for Kit

kit-msgpack

MessagePack binary serialization for Kit

kit-cbor

CBOR (Concise Binary Object Representation) encoding and decoding for Kit

kit-edn

EDN (Extensible Data Notation) parsing and generation for Kit

kit-lite3

Lite3 zero-copy serialization format bindings for Kit

kit-toon

TOON (Token-Oriented Object Notation) encoder/decoder for Kit - reduces token usage by 30-60% compared to JSON

kit-xml

XML parsing, generation, and XPath queries using libxml2

kit-yaml

YAML parsing and generation for Kit

kit-markdown

Markdown parsing and HTML rendering for Kit

kit-cmark

CommonMark Markdown parser and renderer bindings for Kit

kit-pdf

PDF reading and writing library for Kit using pdfio

Cryptography & Security

kit-crypto

Cryptographic primitives for Kit using Zig std.crypto (no external deps)

kit-sodium

Comprehensive cryptographic library for Kit using libsodium

kit-rsa

RSA cryptographic operations for Kit using OpenSSL

Graphics, GPU & Game Development

kit-sdl

SDL2 bindings for Kit - cross-platform windowing, input, and graphics

kit-glfw

GLFW windowing and input library bindings for Kit

kit-raylib

Raylib game development library bindings for Kit

kit-sokol

Cross-platform graphics and audio library bindings for Kit using sokol-zig

kit-image

Image loading and manipulation for Kit using stb_image

kit-imagemagick

ImageMagick bindings for Kit - image processing and manipulation

kit-opencv

OpenCV computer vision library bindings for Kit

kit-cairo

Cairo 2D vector graphics library bindings for Kit

kit-vips

libvips fast image processing library bindings for Kit

kit-svg

Type-safe SVG generation library for Kit

kit-plot

Compositional visualization library inspired by Algebra of Graphics

kit-metal

Apple Metal GPU bindings for Kit - graphics and compute on macOS

kit-vulkan

Vulkan graphics API bindings for Kit - low-level GPU compute and graphics

kit-wgpu

Cross-platform GPU compute and rendering via WebGPU (wgpu-native)

kit-cuda

CUDA GPU computing via cuBLAS, cuFFT, and CUDA runtime (requires NVIDIA GPU and CUDA toolkit)

kit-opencl

Cross-platform GPU computing via OpenCL (works on NVIDIA, AMD, Intel, and Apple GPUs)

kit-game

A LÖVE-inspired game development framework for Kit

kit-box2d

Kit bindings for Box2D v3 - 2D physics engine with rigid bodies, joints, and collision detection

kit-geometry

Basic geometric types and operations for 2D and 3D space

GUI & Desktop Applications

kit-tk

Tk GUI toolkit bindings for Kit - cross-platform windowed applications

kit-tea

The Elm Architecture (TEA) framework for Kit - functional GUI programming

kit-zgpui

ZGPUI - A GPU-accelerated UI framework for Kit inspired by Zed's GPUI, powered by raylib

kit-nuklear

Nuklear immediate-mode GUI library bindings for Kit

kit-raygui

Raygui immediate-mode GUI library bindings for Kit

kit-ncurses

ncurses terminal UI library bindings for Kit

kit-linenoise

linenoise line editing library bindings for Kit

Multimedia & Audio

kit-ffmpeg

FFmpeg bindings for Kit - video and audio processing

kit-flite

Flite text-to-speech synthesis bindings for Kit

kit-audio

Cross-platform audio playback and recording for Kit using miniaudio

kit-sndfile

libsndfile audio file I/O library bindings for Kit

Finance & Markets

kit-fix

FIX protocol (Financial Information eXchange) implementation for Kit

kit-ta-lib

A TA-Lib wrapper for Kit

kit-yahoo-finance

Yahoo Finance API client for Kit - stock quotes, historical data, and fundamentals

kit-ticker

Well-known ticker symbols for stocks, ETFs, indexes, and crypto

kit-finnhub

Finnhub Stock API client for Kit — real-time quotes, historical candles, company profiles, earnings, dividends, splits, recommendations, and basic financials