Pure Prolog libraries
callgraph - Predicate dependency graph generation
cclab - Playing with delimited continuations
dcgutils - DCG utilities
fileutils - I/O and file-system utilities
genutils - Miscellaneous utilities
memo - volatile and persistent memoisation of deterministic predicates.
midiutils - Working with MIDI messages
musicbrainz - Musicbrainz web service client
musicxml - MusicXML reader
plumdrum - Humdrum symbolic music format reading
swipe - Shell pipeline construction
sparkle - Prolog-friendly SPARQL client
sindice - Sindice semantic web index client
textutil - Tools for outputting text in different ways
timeutils - Working with time
typedef - Simple framework supporting algebraic type declarations.
webutils - Web-related utilities
template - template pack directory