SRFI 0: Feature-based conditional expansion construct, using cond-expand - see the section called “Syntax and conditional compilation”.

SRFI 1: List Library, if (require 'list-lib).

SRFI 2: AND-LET*: an AND with local bindings, a guarded LET* special form.

SRFI 4: Homogeneous numeric vector datatypes - see the section called “Uniform vectors”.

SRFI 6: Basic String Ports - see the section called “Ports”.

SRFI 8: receive: Binding to multiple values - see the section called “Multiple values”.

SRFI 9: Defining Record Types, using define-record-type - see the section called “Record types”.

SRFI 11: Syntax for receiving multiple values, using let-values and let*-value - see the section called “Multiple values”.

SRFI 13: String Library. Needs some polishing.

SRFI 14: Character-set Library - see the section called “Character sets”.

SRFI 16: Syntax for procedures of variable arity, using case-lambda.

SRFI 17: Generalized set! - see the section called “Locations”.

SRFI 23: Error reporting mechanism, using error - see the section called “Exception handling”.

SRFI 25: Multi-dimensional Array Primitives - see the section called “Multi-dimensional Arrays”.

SRFI 26: Notation for Specializing Parameters without Currying - see the section called “Procedures”.

SRFI 28: Basic Format Strings - see the section called “Formatted Output (Common-Lisp-style)”.

SRFI 30: Nested Multi-line Comments.

SRFI 37: args-fold - a program argument processor, if (require 'args-fold).

SRFI 38: External Representation for Data With Shared Structure. The read-with-shared-structure is missing, but subsumed by read.

SRFI 39: See the section called “Parameter objects”.

SRFI 41: Streams - see the section called “Streams - lazy lists”.

SRFI 45: Primitives for Expressing Iterative Lazy Algorithms - see the section called “Lazy evaluation”.

SRFI 60: Integers as Bits.

SRFI 62: S-expression comments.

SRFI 64: A Scheme API for test suites.

SRFI 69: Basic hash tables - see the section called “Hash tables”.

SRFI 87: => in case clauses.

SRFI 88: Keyword objects - see the section called “Keywords”.

SRFI 95: Sorting and Merging.

SRFI 97: Names for SRFI Libraries.

SRFI 98: An interface to access environment variables

SRFI 107: XML reader syntax - see the section called “XML literals”.

SRFI 108: Named quasi-literal constructors - see the section called “Named quasi-literals”.

SRFI-109: Extended string quasi-literals - see ???.