SRFI-14 character-sets library

SRFI 141: Integer division

SRFI 143: Fixnums

SRFI 144: Flonums

SRFI 151: Bitwise Operations

String library (reduced)

SRFI 158: Generators and Accumulators

SRFI 160: Homogeneous numeric vector libraries

SRFI-162: Comparators sublibrary

SRFI 178: Bitvector library

SRFI-179: Nonempty Intervals and Generalized Arrays (Updated)

SRFI-18 thread library

A JSON parser and printer that supports JSON bigger than memory.

SRFI 189: Maybe and Either

Time Data Types and Procedures

SRFI-196: Range Objects

SRFI-197: Pipeline Operators

SRFI-207: String-notated bytevectors

SRFI 209: Enums and enum sets

SRFI 232: Flexible curried procedures

SRFI 233: INI files

SRFI 253: Data (Type-)Checking

Tagged procedures with type safety (with SRFI-229 compatability)

Sources of Random Bits

Random port libraries

Supplemental Numerics (includes complex hyperbolic functions)

Localization

SRFI-34: Exception Handling for Programs

SRFI-35 Conditions

A simple and flexible command-line option parsing facility

SRFI 38: External representation for data with shared structure

SRFI 41 (Streams)

SRFI-42 (Eager comprehensions)

SRFI-48: Intermediate Format Strings

SRFI-5: A compatible let form with signatures and rest arguments

Homogeneous and heterogeneous arrays

SRFI-69 hash-table library

SRFI-69/90 hash-table library (w/ weak references)

SRFI-78: Lightweight testing

SRFI-99 record types

Oleg Kiselyov's XML parser

Provides LIFO queue (stack) operations

An aggressively optimizing Scheme->C compiler

Statistics library

String Utilities

A wrapper around Subversion's libsvn_client C library.

Parse svnwiki to sxml

A program to convert svnwiki syntax to HTML

Serialize SXML to XML and HTML

The SXML transformations (to XML, SXML, and HTML) from the SSAX project at Sourceforge

The sxpath bits of sxml-tools from the SSAX project at Sourceforge

Symbol Utilities

Synchronization Forms

Simple networked REPL over TCP

Yet Another Testing Utility

A tool to test new eggs before they are added to the official CHICKEN repository

Test Utilities (for test egg)

Python's "this" module ported to CHICKEN

Thread Utilities

Tiger/192 Message Digest

Resource w/ Timeout

A Scheme/TclTk GUI build tool

HMAC-Based and Time-Based One-Time Password algorithms as defined in RFC4226 and RFC6238

tracing and breakpoints

Transducers for working with foldable data types.

A trie (prefix tree) implementation

Typed variants of various record-definition macros

Conversion of units of measurement

Parser for common URI schemes

URI generic syntax (RFC 3986) parsing and manipulation.

Unicode support shim

A template for defining dynamic arguments procedure

Port of the SRFI-43 reference implementation

An implementation of vlists, a functional list-like data structure.

Wadler/Leijen-style pretty-printing combinator library

named standard colors as available in X11

Implementation of the XDG Base Directory Specification

A very simple OOP system