| SRFI-0: | Feature-based conditional expansion construct | [23 implementations] |
| SRFI-1: | List Library | [26 implementations] |
| SRFI-2: | AND-LET*: an AND with local bindings, a guarded LET* special form | [25 implementations] |
| SRFI-4: | Homogeneous numeric vector datatypes | [14 implementations] |
| SRFI-5: | A compatible let form with signatures and rest arguments | [7 implementations] |
| SRFI-6: | Basic String Ports | [23 implementations] |
| SRFI-7: | Feature-based program configuration language | [7 implementations] |
| SRFI-8: | receive: Binding to multiple values | [25 implementations] |
| SRFI-9: | Defining Record Types | [24 implementations] |
| SRFI-10: | #, external form | [7 implementations] |
| SRFI-11: | Syntax for receiving multiple values | [14 implementations] |
| SRFI-13: | String Libraries | [18 implementations] |
| SRFI-14: | Character-set Library | [22 implementations] |
| SRFI-16: | Syntax for procedures of variable arity | [17 implementations] |
| SRFI-17: | Generalized set! | [11 implementations] |
| SRFI-18: | Multithreading support | [13 implementations] |
| SRFI-19: | Time Data Types and Procedures | [18 implementations] |
| SRFI-21: | Real-time multithreading support | [2 implementations] |
| SRFI-22: | Running Scheme Scripts on Unix | [11 implementations] |
| SRFI-23: | Error reporting mechanism | [21 implementations] |
| SRFI-25: | Multi-dimensional Array Primitives | [12 implementations] |
| SRFI-26: | Notation for Specializing Parameters without Currying | [18 implementations] |
| SRFI-27: | Sources of Random Bits | [21 implementations] |
| SRFI-28: | Basic Format Strings | [18 implementations] |
| SRFI-29: | Localization | [8 implementations] |
| SRFI-30: | Nested Multi-line Comments | [12 implementations] |
| SRFI-31: | A special form `rec' for recursive evaluation | [15 implementations] |
| SRFI-34: | Exception Handling for Programs | [12 implementations] |
| SRFI-35: | Conditions | [8 implementations] |
| SRFI-36: | I/O Conditions | [3 implementations] |
| SRFI-37: | args-fold: a program argument processor | [14 implementations] |
| SRFI-38: | External Representation for Data With Shared Structure | [17 implementations] |
| SRFI-39: | Parameter objects | [20 implementations] |
| SRFI-41: | Streams | [16 implementations] |
| SRFI-42: | Eager Comprehensions | [15 implementations] |
| SRFI-43: | Vector library | [14 implementations] |
| SRFI-44: | Collections | [1 implementation] |
| SRFI-45: | Primitives for Expressing Iterative Lazy Algorithms | [13 implementations] |
| SRFI-46: | Basic Syntax-rules Extensions | [5 implementations] |
| SRFI-47: | Array | [4 implementations] |
| SRFI-48: | Intermediate Format Strings | [11 implementations] |
| SRFI-49: | Indentation-sensitive syntax | [2 implementations] |
| SRFI-51: | Handling rest list | [4 implementations] |
| SRFI-54: | Formatting | [5 implementations] |
| SRFI-55: | require-extension | [8 implementations] |
| SRFI-57: | Records | [3 implementations] |
| SRFI-58: | Array Notation | [3 implementations] |
| SRFI-59: | Vicinity | [7 implementations] |
| SRFI-60: | Integers as Bits | [18 implementations] |
| SRFI-61: | A more general cond clause | [12 implementations] |
| SRFI-62: | S-expression comments | [12 implementations] |
| SRFI-63: | Homogeneous and Heterogeneous Arrays | [7 implementations] |
| SRFI-64: | A Scheme API for test suites | [11 implementations] |
| SRFI-66: | Octet Vectors | [8 implementations] |
| SRFI-67: | Compare Procedures | [9 implementations] |
| SRFI-69: | Basic hash tables | [16 implementations] |
| SRFI-70: | Numbers | [2 implementations] |
| SRFI-71: | Extended LET-syntax for multiple values | [5 implementations] |
| SRFI-72: | Hygienic macros | [1 implementation] |
| SRFI-74: | Octet-Addressed Binary Blocks | [5 implementations] |
| SRFI-78: | Lightweight testing | [11 implementations] |
| SRFI-86: | MU and NU simulating VALUES & CALL-WITH-VALUES, and their related LET-syntax | [3 implementations] |
| SRFI-87: | => in case clauses | [9 implementations] |
| SRFI-88: | Keyword objects | [6 implementations] |
| SRFI-89: | Optional positional and named parameters | [2 implementations] |
| SRFI-90: | Extensible hash table constructor | [1 implementation] |
| SRFI-94: | Type-Restricted Numerical Functions | [2 implementations] |
| SRFI-95: | Sorting and Merging | [10 implementations] |
| SRFI-96: | SLIB Prerequisites | [4 implementations] |
| SRFI-97: | SRFI Libraries | [2 implementations] |
| SRFI-98: | An interface to access environment variables | [14 implementations] |
| SRFI-99: | ERR5RS Records | [6 implementations] |
| SRFI-100: | define-lambda-object | [2 implementations] |
| SRFI-101: | Purely Functional Random-Access Pairs and Lists | [7 implementations] |
| SRFI-105: | Curly-infix-expressions | [2 implementations] |
| SRFI-106: | Basic socket interface | [4 implementations] |
| SRFI-107: | XML reader syntax | [1 implementation] |
| SRFI-108: | Named quasi-literal constructors | [1 implementation] |
| SRFI-109: | Extended string quasi-literals | [1 implementation] |
| SRFI-110: | Sweet-expressions (t-expressions) | [1 implementation] |
| SRFI-111: | Boxes | [11 implementations] |
| SRFI-112: | Environment Inquiry | [6 implementations] |
| SRFI-113: | Sets and bags | [8 implementations] |
| SRFI-115: | Scheme Regular Expressions | [7 implementations] |
| SRFI-116: | Immutable List Library | [7 implementations] |
| SRFI-117: | Queues based on lists | [8 implementations] |
| SRFI-118: | Simple adjustable-size strings | [3 implementations] |
| SRFI-119: | wisp: simpler indentation-sensitive scheme | [1 implementation] |
| SRFI-120: | Timer APIs | [2 implementations] |
| SRFI-123: | Generic accessor and modifier operators | [2 implementations] |
| SRFI-124: | Ephemerons | [8 implementations] |
| SRFI-125: | Intermediate hash tables | [10 implementations] |
| SRFI-126: | R6RS-based hashtables | [3 implementations] |
| SRFI-127: | Lazy Sequences | [8 implementations] |
| SRFI-128: | Comparators (reduced) | [12 implementations] |
| SRFI-129: | Titlecase procedures | [7 implementations] |
| SRFI-130: | Cursor-based string library | [7 implementations] |
| SRFI-131: | ERR5RS Record Syntax (reduced) | [5 implementations] |
| SRFI-132: | Sort Libraries | [10 implementations] |
| SRFI-133: | Vector Library (R7RS-compatible) | [11 implementations] |
| SRFI-134: | Immutable Deques | [7 implementations] |
| SRFI-135: | Immutable Texts | [7 implementations] |
| SRFI-136: | Extensible record types | [1 implementation] |
| SRFI-137: | Minimal Unique Types | [2 implementations] |
| SRFI-138: | Compiling Scheme programs to executables | [2 implementations] |
| SRFI-139: | Syntax parameters | [4 implementations] |
| SRFI-140: | Immutable Strings | [2 implementations] |
| SRFI-141: | Integer division | [9 implementations] |
| SRFI-143: | Fixnums | [10 implementations] |
| SRFI-144: | Flonums | [7 implementations] |
| SRFI-145: | Assumptions | [8 implementations] |
| SRFI-146: | Mappings | [4 implementations] |
| SRFI-147: | Custom macro transformers | [2 implementations] |
| SRFI-148: | Eager syntax-rules | [0 implementations] |
| SRFI-149: | Basic Syntax-rules Template Extensions | [6 implementations] |
| SRFI-150: | Hygienic ERR5RS Record Syntax (reduced) | [0 implementations] |
| SRFI-151: | Bitwise Operations | [10 implementations] |
| SRFI-152: | String Library (reduced) | [5 implementations] |
| SRFI-153?: | Ordered Sets | [0 implementations] |
| SRFI-156: | Syntactic combiners for binary predicates | [2 implementations] |
| SRFI-158: | Generators and Accumulators | [9 implementations] |
| SRFI-160: | Homogeneous numeric vector libraries | [4 implementations] |
| SRFI-161: | Unifiable Boxes | [1 implementation] |
| SRFI-162: | Comparators sublibrary | [3 implementations] |
| SRFI-163: | Enhanced array literals | [2 implementations] |
| SRFI-164: | Enhanced multi-dimensional Arrays | [1 implementation] |
| SRFI-165: | The Environment Monad | [0 implementations] |
| SRFI-166: | Monadic Formatting | [2 implementations] |
| SRFI-167: | Ordered Key Value Store | [0 implementations] |
| SRFI-168: | Generic Tuple Store Database | [0 implementations] |
| SRFI-169: | Underscores in numbers | [2 implementations] |
| SRFI-170: | POSIX API | [3 implementations] |
| SRFI-171: | Transducers | [3 implementations] |
| SRFI-172: | Two Safer Subsets of R7RS | [1 implementation] |
| SRFI-173: | Hooks | [3 implementations] |
| SRFI-174: | POSIX Timespecs | [2 implementations] |
| SRFI-175: | ASCII character library | [2 implementations] |
| SRFI-176: | Version flag | [4 implementations] |
| SRFI-178: | Bitvector library | [2 implementations] |
| SRFI-179: | Nonempty Intervals and Generalized Arrays (Updated) | [2 implementations] |
| SRFI-180: | JSON | [2 implementations] |
| SRFI-181: | Custom ports (including transcoded ports) | [2 implementations] |
| SRFI-185: | Linear adjustable-length strings | [2 implementations] |
| SRFI-188: | Splicing binding constructs for syntactic keywords | [3 implementations] |
| SRFI-189: | Maybe and Either: optional container types | [3 implementations] |
| SRFI-190: | Coroutine Generators | [2 implementations] |
| SRFI-192: | Port Positioning | [3 implementations] |
| SRFI-193: | Command line | [5 implementations] |
| SRFI-194: | Random data generators | [1 implementation] |
| SRFI-195: | Multiple-value boxes | [2 implementations] |
| SRFI-196: | Range Objects | [3 implementations] |
| SRFI-197: | Pipeline Operators | [3 implementations] |
| SRFI-201?: | Syntactic Extensions to the Core Scheme Bindings | [0 implementations] |
| SRFI-202?: | Pattern-matching Variant of the and-let* Form that Supports Multiple Values | [0 implementations] |
| SRFI-203: | A Simple Picture Language in the Style of SICP | [1 implementation] |
| SRFI-206: | Auxiliary Syntax Keywords | [1 implementation] |
| SRFI-207: | String-notated bytevectors | [4 implementations] |
| SRFI-208: | NaN procedures | [1 implementation] |
| SRFI-209: | Enums and Enum Sets | [2 implementations] |
| SRFI-210: | Procedures and Syntax for Multiple Values | [1 implementation] |
| SRFI-211: | Scheme Macro Libraries | [1 implementation] |
| SRFI-212: | Aliases | [2 implementations] |
| SRFI-213: | Identifier Properties | [1 implementation] |
| SRFI-214: | Flexvectors | [1 implementation] |
| SRFI-215: | Central Log Exchange | [3 implementations] |
| SRFI-216: | SICP Prerequisites (Portable) | [3 implementations] |
| SRFI-217: | Integer Sets | [3 implementations] |
| SRFI-219: | Define higher-order lambda | [5 implementations] |
| SRFI-221: | Generator/accumulator sub-library | [1 implementation] |
| SRFI-222: | Compound Objects | [2 implementations] |
| SRFI-223: | Generalized binary search procedures | [1 implementation] |
| SRFI-224: | Integer Mappings | [2 implementations] |
| SRFI-225?: | Dictionaries | [0 implementations] |
| SRFI-226?: | Control Features | [0 implementations] |
| SRFI-227: | Optional Arguments | [3 implementations] |
| SRFI-228?: | Composing Comparators | [2 implementations] |
| SRFI-229: | Tagged Procedures | [3 implementations] |
| SRFI-230: | Atomic Operations | [1 implementation] |
| SRFI-231: | Intervals and Generalized Arrays | [2 implementations] |
| SRFI-232: | Flexible curried procedures | [2 implementations] |
| SRFI-233?: | INI files | [0 implementations] |
| SRFI-234?: | Topological Sorting | [0 implementations] |
| SRFI-235?: | Combinators | [2 implementations] |
| SRFI-236?: | Evaluating expressions in an unspecified order | [2 implementations] |
| SRFI-237?: | R6RS Records (refined) | [0 implementations] |
| SRFI-238?: | Codesets | [2 implementations] |
| SRFI-239?: | Destructuring Lists | [1 implementation] |
| SRFI-240?: | Reconciled Records | [0 implementations] |
| SRFI-241?: | Match — Simple Pattern-Matching Syntax to Express Catamorphisms on Scheme Data | [0 implementations] |
| SRFI-242?: | The CFG Language | [0 implementations] |
| SRFI-244?: | Multiple-value Definitions | [2 implementations] |
| SRFI-247?: | Syntactic Monads | [1 implementation] |
| SRFI-251?: | Mixing groups of definitions with expressions within bodies | [0 implementations] |
| SRFI-252?: | Property Testing | [0 implementations] |