Dictionaries / Thesaurus
- OneLook: Multi Dictionary / Thesaurus Search
- Wiktionary: Dictionary
- Merriam-Webster: Dictionary / Thesaurus
- GoldenDict / 2 - Dictionary
- NGrams or Netspeak - Word Usage Trackers
- The Piracy Glossary: Piracy Dictionary
- UrbanDictionary or Slangit - Slang Word / Phrase Dictionaries
- Wordnik: Dictionary
- Oxford English Dictionary: Dictionary / Bypass
- Cambridge Dictionary: Dictionary
- PowerThesaurus: Thesaurus
- Historical Thesaurus of English: Historical Thesaurus
- Phrases.org: Phrase Dictionary
- Time Traveler: Find Words First Printed Usage
- EtymOnline: Etymologies
- Ozdic: Collocation Dictionary
- StarlingDB: Advanced Linguistics Dictionary
- Phrontistery: Obscure Word Dictionary
- Unionpedia, Lexipedia or VisuWords: Word Connections / Visualizers
- Eunoia: Words with No Translation
- Affixes.org: Affixes
- Fraze.it: Sentence Search
- Feeels: Emotion Synonym Chart
- PrideFlags: LGBT Flag Index
- TheDevilsDictionary: Cynical Dictionary
- WordSafety: Swear Word Indexes
- PyGlossary or DSL Converter: Convert Dictionary Files