Puzzle Helpers

• Codesheet — A whole bunch of commonly-used codes, e.g. braille, Morse, ...
• Reference data — Lots of reference data lists and tables

External tools

Logic puzzles

• Logigram puzzle tool — Solver for grid-based logic puzzles with logic extrapolation
• Noq puzzle solver — Akari, Cave, Country Road, Doppelblock, Easy As..., Five/Four/N cells, Heyawake, LITS, Masyu, Nanro, Nagareru-Loop, Nonogram, Numberlink, Nuribou, Nurikabe, Onsen-Meguri, Skyscrapers, Slitherlink, Star Battle, Sudoku, Tapa, Yajilin

Anagrams and crosswords

• Anagram solver — Word list seems to include a scrape of all page titles in wikipedia, so is useful for things like people and place names
• Crossword solver — Provides definitions as well as the results, so useful for obscure/factual answers
• Iterative anagram solver — Anagram solving word by word, e.g. when you have a whold grid and need to find things and know everything is used only once
• Wordplays cryptic crossword solver — Cryptic crossword clues taken from a bank of clues and answers; orders results by how well they fit
• Wordsmith anagram solver — Multi-word anagrams, max/min lengths of words, numbers of words, candidate word lists as well as full anagrams, include/exclude words, even other languages
• Crossword parser — Convert a crossword image to something that can be pasted into Google Sheets
• Nutrimatic — Matches patterns against a dictionary of words and phrases mined from Wikipedia. Supports anagramming, partial anagramming, and consonant/vowel wildcards.

Cryptography

• Dcode.fr — Ton of different encoding, puzzle, and cryptanalaysis tools
• Substitution solver — Substitution solver, without needing known words

Other/Multipurpose

• Cross+A — Solving logic puzzles, identifying what an unspecified puzzle might be, word ID using phone pad, known sets of letters, overlapping words, word chains, track words
• Geocaching toolbox — Variety of codes with lots of pictoral codes; code table page shows snippets of coded data to help identification
• OneLook — Dictionary search: definitions, patterns, meanings, phrases
• CyberChef — Chain a collection of cryptographic and other operations together on an input
• Brute — Brute-force attempts to decode input, ranked