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Packs (add-ons) for SWI-Prolog

Below is a list of known packages. Please be aware that packages are not moderated. Installing a pack does not execute code in the pack, but simply loading a library from the pack may execute arbitrary code. More information about packages is available here. You can search for packages from the Prolog command line using pack_list/1. This contacts the pack server for packs that match by name or title. A leading i indicates that the pack is already installed, while p merely indicates that it is known by the server.

?- pack_list(graph).
p callgraph@0.3.4           - Predicate call graph visualisation
i graphml@0.1.0             - Write GraphML files
i gvterm@1.1                - Show Prolog terms using graphviz
p musicbrainz@0.6.3         - Musicbrainz client library
p sindice@0.0.3             - Access to Sindice semantic web search engine

After finding the right pack, the pack and its dependencies can be installed using the pack_install/1 as illustrated below.

?- pack_install(hello).

Clicking the package shows details and allows you to rate and comment the pack.

Pack
tot: 381
Version
(#older)
Downloads
tot: 58,221
(#latest)
Rating
(#votes/
#comments)
Title
abbreviated_dates0.0.3922352,37245
Parses abbreviated and ambiguous dates in multiple languages
achelois0.5.077,521202
Collection of tools to make writing scripts in Prolog easier.
aleph5214911
Aleph Inductive Logic Programming system
amazon_api0.0.328376
Interface to Amazon APIs
ansi_termx0.0.131
ANSI terminal operations
anti_unify0.54135
Anti-unification. anti_unify/3 is intended as a relational drop-in replacement for term_subsumer/3.
aop0.0.99781
Opinonated aspect-oriented programming for prolog
ape6.7.1807151541
Parser for Attempto Controlled English (ACE)
app0.112
Prolog Application Server
arithmetic_types0.0.43288
Support for user defined types in arithmetic expressions
arouter2.0.0523252
Alternative HTTP path router
assertions0.0.141741
Ciao Assertions Reader for SWI-Prolog
atom_feed0.2.0410187
Parse Atom and RSS feeds
auc1.0101782
Library for computing Areas Under the Receiving Operating Charactersitics and Precision Recall curves
automake0.2.5146115
Automake
b_real1.09624
Interface predicates to commonly used R functions.
bddem4.3.1232132
A library for manipulating Binary Decision Diagrams
bencode0.0.156
Bencoding from BitTorrent protocol
bibtex0.1.833222
Parser and predicates for BibTeX files
bims3.08956
Bayesian inference of model structure.
bio_analytics0.65332
Computational biology data analytics.
bio_db4.3281041
Access, use and manage big, biological datasets.
bio_db_repo23.10.422651
Data package for bio_db.
biomake0.1.511437
Prolog makefile-like system
blog_core1.6.3241266
Blog/CMS framework
body_reordering2.0.363418
Clause expansion Utils for deciding which order to run Goals in a body
bousi_pack1.0.03271
On my way to a SWISH enabled BPL - a FLI exercise
by_unix0.229027
An elegance layer to calling unix commands.
call_cleaup_each0.0.11
Call A Goal On Each Redo
callgraph0.4.117362228
(1/2)		Predicate call graph visualisation
canny_tudor0.23.22511120
Canny bag o' Tudor
cclab0.1.5133821
Continuations lab
ccprism0.1.0206438
Probabilistic programming using delimited continuations
chan0.2.034
Directional channels for thread communication
chat801.117049
Classic CHAT80 Prolog natural language application
chess_db1.035523
PGN and chess game databases.
ciao0.0.112313
Ciao Prolog compatibility library
clause_attvars1.1.1187211
An alternate interface to the clause database to allow attributed variables to be asserted
cli_table1.0.1044
Pretty unicode tables for the CLI with Prolog
clitable1.0.875324
Pretty unicode tables for the CLI with Prolog
clpBNR0.11.2251929
CLP over Reals using Interval Arithmetic - includes Rational, Integer and Boolean domains as subsets.
clpcd0.0.12206
Constraints over continuous domains
condition0.1.136856
Condition system a la Common Lisp
consul_client0.0.421916
Consul Client
cosmos0.3612264
<no title>
coworkers0.1.019
Workflow definition as tree of coroutines
cplint4.5.02139362
A suite of programs for reasoning with probabilistic logic programs
cplint_datasets1.080
Dataset for machine learning with cplint
cplint_r1.0.01410058
R plotting predicates for cplint
css_write1.4.06541
DCG for generating CSS
ct_fft0.01
Cooley–Tukey FFT algorithm
date_time0.1.463,0522,266
(1/1)		Logical arithmetic on dates and times
db_facts0.55284170
Common db-tables-as-facts and SQL layer for ODBC and proSQLite.
dcg4pt1.0.047450
DCG for Parse Trees
dcg_extras0.15
Dcg extras
dcg_tools0.0.2121
Battery included bidirectional dcg parsing
dcg_util0.3.1314527
(1/1)		DCG utility predicates
dcgutils1.1.311539440
DCG related utilities
ddebug0.1187
Declarative Debugger
debug_adapter0.7.22812442
Debug Adapter Protocol package for SWI-Prolog
debug_call1.577412
Debugging with calls
delay0.3.378456
Avoid instantiation errors for built-in predicates
dia0.145
An interface to .dia-uml-diagrams
diagnostics0.2.038064
SWI-Prolog source code diagnostics library
dialect-ciao0.0.11
Ciao Prolog compatibility library
dict_schema0.0.21127124
Dict converter and validator
dictoo3.1.3291593
Dict-like OO Syntax
dictype0.0.221
Concise dict type definitions
dirtree1.0.133921
Load XML of directory content.
disp_bn0.113
Construct and display BN terms via graphviz
djson0.0.32149143
Declarative JSON
docstore2.0.2619839
Document-oriented database for Prolog
dot_dcg0.1.04271
A DCG for a subset of the DOT language
dotcloud0.0.213125
Conveniences for running on dotCloud
dpath0.7.36495
Directory traversal module
dynworks1.3.2610525
Dynamic multi-dimensional arrays and vectors
each_call_cleanup1.1.11810271
Each Call Redo Setup and Cleanup
edcg0.9.1.8132691
(1/1)		Extended DCG
eggdrop2.0.321411
Hook up to an existing IRC Client called an Eggdrop
environ1.0173
Demo package with C code, fetching the program environment
evil0.2.3171
(4/4)		Predicates to Further the Cause of Evil
excel_worksheets0.3.0561
Excel reader of worksheets cell values into prolog terms
execution_context0.2.044817
Allows to retrieve setting from execution environment, given flexibility over setting/2, get_env, or command line configuration
fcgi0.9.034
fcgi - Fast Common Gateway Interface (FastCGI) library for Prolog
ffi0.5714357
Dynamically call C functions
ffimatrix0.1.010841
Operations with matrices using Prolog and C
file_scope1.1.1185191
File local scoped efects
file_utilities0.135
File system related utilities
files_extras0.1.02362
Few extra predicates for traversing folders and simplifying work with file system
fileutils0.3.5108830
Utilities for reading, writing and finding files
fine_upload0.2.05299
HTTP support for file uploading
fld1.2.26531
Object system that allows easy and efficient access to term arguments by name.
fluents0.1.212817
Access all solutions of a goal without backtracking
flux1.1.11840
FLUX: A logic programming method for reasoning agents and ALPprologis a Prolog implementation of an action programming language. With ALPprolog you can program strategies for autonomous agents in dynamic domains like e.g. the Wumpus world.
fnotation1.0.058915
Function notation for Prolog
format_spec0.0.214544
Parse and check format/2 specifications
func0.4.28367235
(2/2)		Function application and composition
function_expansion0.1.241125
(1/1)		Help for writing function-like macros
gbn0.211514
BNs for large cohort genomic studies.
genutils0.3.82310756
General miscellaneous utilities
geoip0.9.01323
Access GeoIP library
googleclient0.5.233211
SWI-Prolog code for "Login with Google"
gpc1.2.038533
Generic polygon clipper
graphml0.1.0143
(1/1)		Write GraphML files
graphpl0.1.16452
Graph data structure utilities
graphql0.0.140
GraphQL Prolog Library
graphql-swipl0.0.11
GraphQL Prolog Library
gvar_syntax2.0.31812468
Global Variable Syntax
gvterm1.11221190
(1/1)		Show Prolog terms using graphviz
hashtbl0.0.214847
Pure and impure hash tables
hdt0.566925
Access RDF HDT files
hello0.0.175
(1/1)		Hello World
hello_world0.118
Hello World pack as a test
hilog1.1.11811514
XSB-Prolog's Hilog Syntax in SWI-Prolog
hook_hybrid1.1.11812153
Hook assert retract call of *specific* predicates
http2_client1.0.065445
An HTTP/2 client
httplog0.5.01243
Analyse SWI-Prolog HTTP server log files
ical0.1.09
iCalendar DCGs and parsers
identity0.2.221
Registration, login, and role management
imodule0.0.11
Support for modules from the server.
index_util0.0.21255248
Prolog index utils
indexed_terms1.0.019
Positional access to terms' arguments
inotify0.9.117271
Access Linux inotify API to watch file system changes
instant_prolog_docs2.0.3114371
Magically document prolog source files based on predicate and variable naming conventions
interpolate0.1.02951
String interpolation
irc_client1.3.096340
Low level interface to IRC clients
jolog0.0.314838
Concurrency via join calculus
json_answer0.33114
Convenience module to convert a prolog query into a JSON answer
julian0.1.3770114
Date and time library
julian_lang_en0.0.215049
Parse English language phrases into library(julian) constraints
jwt_io0.0.344522
JWT implementation
k8s_client1.1.04185
kubernetes API client with watcher functionality
kubepl0.111613
Kubernetes Client
lambda1.0.0783
(4/4)		Lambda expressions
lambda_abstractions0.2.115554
Lambda abstractions
languages_bot0.0.111410
A chatbot that talks with the user to recommend some programming language
lazy_streams0.5.018
Lazy Stream Generators
lbfgs2.0167019
An interface to call libLBFGS from within SWI-Prolog
lcs0.0.144
Longest common subsequence
ldap4pl0.113837
LDAP interface
lib2.1018394
Predicate based code development
lib_atts1.1.1183201
Common atts.pl interface like https://sicstus.sics.se/sicstus/docs/4.0.0/html/sicstus/lib_002datts.html
libssh0.9.236616
Provide an embedded SSH server
liftcover0.17251
A Probabilistic Indutive Logic Programming system
link_grammar_prolog4.1.0.325046
A binding to use the Link Grammar library from SWI-Prolog
list_util0.13.0193,4451
Predicates for working with lists
log4p0.0.9418329
Logging for Prolog
logicmoo_base2.0.348873
LogicMOO - Extends Prolog Programming to support Dynamic Epistemic Logic (DEL) with Constraints
logicmoo_cg2.0.36215
Conceptual Graph (CG) Libraries in Prolog and test data
logicmoo_ec2.0.3581
Logicmoo Event Calc -- A SWI-Prolog Pack that lets Prolog code seamlessly use planners speaking: LPS, Decreasoner EventCalc, PDDLish and OCLh
logicmoo_nars2.0.31113
Narsese: Like OpenNARS in Prolog
logicmoo_nlu2.0.326881
Various English to Logic Converters - warning: HUGE amount of lexical and test data
logicmoo_planners1.1.118284
Various Hybrid HTN Planners speaking PDDLish and OCLh
logicmoo_utils3.1.3461004
Common predicates that are used throughout LogicMOO Software
logicmoo_webui2.0.39251
LogicMOO - The pack that installs the WebUI
logicmoo_workspace2.0.3231
LogicMOO Workspace -- The pack that installs the Logicmoo IDE and WebUI
logtalk3.72.01008912
Logtalk - Object-Oriented Logic Programming Language
loop_check1.1.11810132
New simple loop checking
lps_corner2.0.33188
LPS Corner with SWISH and Dialect
lsp_server2.2.8281,5461,351
A Prolog LSP Server
mail_merge1.0.01191
Library for performing mail merge
mail_standards0.1.03
Mail IMF and Maildir implementations.
markdown0.0.32281144
Markdown parser for SWI-Prolog
mathml0.217291
Translates mathematical expressions to compounds that can be used by html//1 (SWISH) or html//3 (normal SWIPL, with pack http/html_write).
matrix2.0727554
Operations with matrices
matrix_utls1.112219
Matrix utilities: Kronecker (Tensor), Hadamard, and matrices creation/multiplications
mavis0.2.3131,0872
Optional type declarations
maybe0.1.137370
The maybe type represents an optional value
medikit0.0.3231
meditans' personal utilities
memo0.6.1179140
Persistent memoisation of deterministic predicates
midiutils0.0.38
midiutils
mime0.5.01231
MIME processing library based on maildrop
miser0.0.128
Build self-optimizing predicates
mlu0.53733
Machine learning utilities
morfeusz0.1.47162
Morfeusz2 bindings for SWI-Prolog.
mpi1.05341
Porting of the LAMMPI library of Yap Prolog to SWI-Prolog
mqtt1.0.528482
mqtt - pub/sub pack for SWI-Prolog using mosquitto
msgpack0.1.643226
DCG for packing & unpacking of MessagePack data to/from bytes
msgpackc0.2.145141
C-Based MessagePack for SWI-Prolog
mtx0.655617
Working with data matrices
multimodal_dcg2.0.383610
Reduce floundering of DCGs by constraining and narrowing search
musicbrainz0.7.0215327
Musicbrainz client library
musicxml0.0.212826
MusicXML partial reader
must_trace1.1.11826451
Trace with your eyeballs instead of your fingers
mutable_variables1.0.026
Mutable Variables
nan_common1.223329
Common operations (validation, etc.)
nan_numerics_prime1.2.547065
Nan.Numerics.Prime - A simple prime number library
nan_system_sources1.2.015
Nan.System.Sources - Answer Sources in Prolog
nanp0.1.011110
phone numbers in the North American Numbering Plan
narsese2.0.3142
Narsese: Like OpenNARS in Prolog
ninja0.23
Ninja build system generator
no_repeats1.1.11872213
New ways to avoid duplicate solutions
notes8000.1.01111
Query phone number data from 800notes.com
number_to_word0.4.253732
Integer to English word conversions
obo_core0.0.116
Vocab for upper parts of core OBOs such as GO
obo_metadata0.0.43224221
RDF vocabulary for OBO metadata ontologies
obo_ro0.0.115
Vocab for OBO Relation Ontology
odf_sheet0.2.459527
Load and analyze ODF spreadsheets (.ods)
odict0.2.652722
Unifier over feature structures based on attributed variables
onepointfour_basics0.91
Some basic predicates that may be useful. Includes a replacement of must_be/2 and a dict prettyprinter
ontodot0.1.121512
Create dot files from an RDF ontology.
ontoweb0.0.4198
Show an ontology through a Web service.
open_dicts0.0.132
Open dicts for SWI Prolog
openapi0.2.151222
OpenAPI (Swagger) interface
options1.51011413
Options handling.
orgref_fix0.1.2181
Fix Org-ref citations.
os_lib1.5109930
Operating system interaction predicates.
pPEG2.0.08232
Pack to support parsing text using pPEG grammars
pac1.8.31172163
Anonymous predicates expansion utility
pac4pl0.11121
An SWI-Prolog interface to libPAC
pack_errors2.2611015
Contextual error handling for packs.
pager0.1.01131
Send output to user's preferred pager
pascal1.04251
Probabilistc inductive constraint logic
pcache0.1.018
Persistent answer cache
pddl_valoptic_api1.1.1181
pddl_valoptic_api -- A SWI-Prolog Pack that lets Prolog code seamlessly use PDDL based planners.
peg_syntax1.02123
PEG syntax for prolog
pepl2.36342
Parameter estimation for SLP with the Failure Adjusted Maximisation algorithm.
persist0.3484
Persists facts into a file
pfc3.0.3591631
Pfc -- a package for forward chaining in Prolog
pfd_meta0.118
Probabilistic finite domains meta-interpreter
pha0.1.222826
Probabilistic Horn Abduction
phil1.0.0511561
Learning Hierarchical Probabilistic Logic Programs
phil_datasets1.07434
Dataset for machine learning with phil
pinyin0.1.552418
Parsing and generation of Hanyu Pinyin
plOpenGL0.6.25145131
(1/1)		OpenGL Bindings
pl_mustache1.0.02191
Mustache
pl_omdb0.5.083818
API interface to OMDB (Open Movie Database)
pl_owl0.1.08
OWL utility predicates over rdf library
plammar1.0.24162
Prolog parser and serialiser written in Prolog
planner_api1.1.118491
planner_api -- A SWI-Prolog Pack that lets Prolog code seamlessly use planners speaking PDDLish and OCLh
plasticsearch0.122725
Elasticsearch client API
plcairo1.1.1411967
plcairo - Prolog bindings for cairo graphics library
plcal0.0.55341
Programming Calendar
plchatscript1.0.943630
(1/1)		Interface to the ChatScript server.
plcomplex0.33274
Simple calculation of complex numbers
plfann0.0.24643
SWI-Prolog for "Fast Artificial Neural Network Library"
plgi1.1.011240100
(1/1)		PLGI - Prolog bindings for GLib/GObject/GIO/GTK+
pljulia0.1.417701
Embedded Julia for SWI Prolog
plmake0.0.311712
Prolog makefile-like system
plmidi0.7.074118
Interface to Mac OS X MIDI system
plml2.0.3164218
Prolog-Matlab bridge
plosc0.4.665120
OSC input/output via liblo
plplot0.0.135710
A library to plot data using gnuplot.
plrand0.9.13136847
Skippable pseudorandom generator and distributions
plsmf0.5.084026
Standard MIDI File reading
plstat1.012221
plstat - Statistics with Prolog
plumdrum0.0.632414
Parsing of Humdrum/Kern symbolic music file format
pluuid2.0.017
Generating and parsing version 4 UUIDs in Pure Prolog
ppm0.0.02
A simple package manager for SWI-Prolog.
predicate_streams3.0.32314012
Implement your own Abstract Predicate Streams
print_table0.0.52481
Formats and prints a table on the terminal screen
prism0.2.142925
Run PRISM as a child process
pro2sql0.1.01
Lightweight translater of Prolog to SQL SELECT statements
programk2.0.3196
AIML 2.0 - Because an AIML Interpreter/Chatbot needed to exist in Prolog to!
progress_bar0.0.51211
Progress-bar and spinner (text-based)
prolog2gpt0.1.010
Library of prolog predicates to access the GPT API
prolog_geo1.0.763214
Geospatial support in Prolog
prolog_graphviz1.0.53175138
Prolog-based graph visualization
prolog_imagemagick1.0.332719
Prolog binding for ImageMagick
prolog_library_collection1.0.1612635271
Prolog Library Collection
prolog_lsp0.0.101012792
Implementation of Language Server Protocol for Prolog
prolog_rdf1.0.752814
Prolog RDF Library
prolog_si0.11
Port of the Scryer prolog si module
prolog_starter_project1.0.421913
Prolog Starter Project
prolog_uriparser1.0.552011
Prolog binding for uriparser
prolog_verify_type0.13
A more declarative approach to verify the type of a prolog term
prologmud2.0.330682
Online text adventure game - MUD Server
prologmud_I71.2.11112323
PrologMUD I7 (NomicMU!) with small Adventure Games in Prolog using the CHAT80 Prolog natural language application
prologmud_samples2.0.338782
Online text adventure game - Sample
prosqlite1.818980225
(0/1)		An SWI-Prolog interface to SQLite
pub_graph1.22243
Access, cache and visualise citation relations in publications servers
pubmed0.0.434433
Access pubmed publication records
purity0.2.14141
A Horn Clause Only library for Prolog
py_to_plantuml0.0.32107
Creates UML class diagrams from Python pylint's pyreverse generated .dot files.
quantity0.113391
Parse quantities like "1.5 kg" and return some formatting information.
quickcheck0.3.0171571
QuickCheck randomized testing
r_session1.111615
Interface to an R process
race0.1.07571
Client for the SOAP interface of the Attempto Reasoner RACE
rdet1.0.2717728
Runtime determinacy checker
rdf_matcher0.1.532720
RDF matching utils
rdf_notification0.115
RDF notification
rdfs2pl0.0.535634
Compile an RDFS schema to prolog predicates
readability_parser0.0.433122
Readability Parser API
real2.31459231
Integrative statistics with R
recaptcha0.9.227267
reCAPTCHA plugin for SWI-Prolog HTTP framework
refactor0.0.363991
(1/1)		Refactoring Tools for SWI-Prolog
regex0.3.3111,7231,328
Regular expressions
reif1.0.0461
Reified if, reification library
reif_utils1.0.016
A collection of reified predicates for use with reif.pl
resbound0.8.114140
Run goal with resource bounds
resp0.331916
Redis protocol parser and writer
resp_parse0.11
Redis protocol parser and writer
rocksdb0.12.0111191
SWI-Prolog interface to RocksDB
rologp0.121861
Simple interface to R
rologpp0.41392051
Simple interface to R
roman0.1.052
Roman numerals
ropes0.1.751710
Ropes data structure library
rserve_client1.1.1168931
R Rserve client
rtchecks0.0.131501
Run-Time Checker for Assertions
rtg0.0.7113221
Regular Tree Grammer validator
rtp_qsndqs0.323937
Real-time persistent queues and deques.
rtrace0.0.71
Selective Interactive Non-Deterministic Tracing
s_expression1.2.11193525
Utilities for Handling of S-Expression Lisp/Scheme-Like forms and parsing of KIF, GDL, PDDL, CLIF
scasp0.10.023867
Goal directed ASP solver
semantria0.0.434030
Use Semantria natural language API
si0.11
Port of the Scryer prolog si module
simple_bootstrap0.0.211614
Bootstrap Extension to Simple Web
simple_template1.3.19450245
Logic-free text (HTML) templates
simple_web0.3.164325
Microframework for building websites
sindice0.0.532821
Access to Sindice semantic web search engine
slack_prolog2.0.33267
Prolog interface to Slack http://www.slack.com
sldnfdraw1.619507241
SLDNF Draw is a Prolog program that draws SLDNF Trees in LaTeX
small_adventure_games1.1.81
Small Adventure Games in Prolog using the CHAT80 Prolog natural language application
smtlib0.0.652821
SMT-LIB parser for SWI-Prolog
smtp1.1.063587
An (E)SMTP client for sending mail
sort_dict0.0.32120116
Sorts dicts by key
sourcehut0.1.108
SourceHut GraphQL API client
space0.3.46414
Space package
sparkle0.1.19866
(1/1)		Prolog-friendly interface to SPARQL endpoints
sparqlprog0.2.9211,738318
Logic programming with SPARQL
sparqlprog_wikidata0.0.325244
SPARQLprog bindings for WikiData
spawn0.0.1180
Easy concurrency
spotify0.1.015
Use the Spotify API from Prolog.
spuds1.211372
Persistent, user code inclusive, documentation server for linux
sql_compiler0.1.412928
Prolog to SQL compiler
stoics_lib1.71310013
A medley of library predicates for stoics packs
stompl0.11178
STOMP client
subclause_expansion1.1.1185111
More detailed versions of term/goal expansion hooks
subsumes0.43143
Relational term subsumption. subsumes/2 is intended as a relational drop-in replacement for subsumes_term/2. Note that this conflicts with the deprecated predicate terms:subsumes/2.
sudoku_utils0.0.113741735
Testing to make an example package with utils for working with Sudoku
svg0.114
Manipulating SVG xmls
sweet0.1.137671
Sugar to make Prolog a little sweeter
swicli2.0.012878
SWI-Prolog interface to C/C++/.NET/Mono/Objective-C
swipe0.2.6115527
Shell pipeline construction with type checking
switex0.0.763529
Literate programming with LaTeX and Prolog
tabling_dra1.0.4572
SWI-Prolog interface to Table-handling procedures for the "dra" interpreter. Written by Feliks Kluzniak at UTD (March 2009)
tailwind_pl2.0.29257
Tailwind-style CSS generator for Prolog
tailwind_pl_generate2.2.0393
Tailwind-style CSS generator for Prolog - Generator
tap1.0.3261,6381
Automated tests via Test Anything Protocol
telegrambot0.0.21
API for Telegram
term_diff0.0.111614
terminus_store_prolog0.19.8793,531235
Use the Terminus-Store Rust library from Prolog
thousands0.2.033530
(0/1)		Thousands separator for large integers
tidylog0.0.118
timeutils0.0.429
Tools for temporally aware programming
tokenize1.0.14278218
A simple tokenization library
tor1.0.444423
Tor: Extensible Search with Hookable Disjunction
transpiler0.1221123
A universal translator for programming languages
trill6.0.612332216
A tableau probabilistic reasoner in three different versions
turing1.0.224338
Turing Machine Simulator
tus0.0.14132432
TUS file transport protocol in prolog
twitter0.101246
(1/1)		A pack to access the twitter api
type_check1.0.3310127
Type System for Prolog based on Hindley-Milner
typedef0.1.910442330
(2/2)		Support for type definitions
unified_diff0.0.128
Parse and generate unified diffs
union_find1.0.036
A union-find algorithm implementation for SWI-Prolog
unionfind1.0.022
Optimal implementation of the union-find algorithm in CHR
upsh2.65341
Unix to Prolog shell.
uri_qq0.3.033827
URI quasiquotations
uuid1.1.027573
Generating and parsing version 4 UUIDs
vcard0.0.112
vCard Parser and Predicates
wam_common_lisp2.0.34010223
ANSI Common Lisp implemented in Prolog
web0.1.114441
Easy web client
webconsole0.9.119897
(0/1)		Use a browser as HTML console
weblog0.0.565312
(0/1)		weblog
wgraph0.657637
Weighted graphs, with plotting via Real
with0.0.61272
Context managers for SWI Prolog
with_memory_file0.1151
Like with_output_to but for memory files
with_open_options1.2.1162215
Utilities to open various objects for read/write
with_state0.0.563123
Stateful computations with records
with_thread_local1.2.1115145
Call a Goal with local assertions
wordnet0.9.3416120
Access to WordNet database
wsdl0.199
Web Service Description Language (WSDL) and SOAP
wuenic0.11
wuenic package
wumpus1.0.01
Hunt The Wumpus
xlibrary0.0.240591
Extended Libraries for Prolog
xlisting1.2.11115292
Selective Interactive Non-Deterministic Tracing
xlisting_web1.1.11861913
Manipulate and browse prolog runtime over www
xsd0.2.18853
XML Schema validation with Prolog
xtools0.0.259842
Extended Tools for SWI-Prolog
yaml0.142122
YAML parser