Dev tools · alternatives · 2026

24 alternatives to Synonyms API

Enhance your language applications with rich word choices

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Synonyms API launched in 2023; newer entries below may have overtaken it.

1. 1
   WordsAPI▲263

   An API for the english language. Definitions, related words, rhymes, and more.

   2015 · wordsapi.com · its alternatives →

2. 2
   Synonymful▲240

   Improve your vocabulary and communicate like a pro.

   2017 · synonymful.com · its alternatives →

3. 3
   Words API▲104

   An API for for the English language

   2015 · wordsapi.com · its alternatives →

4. 4
   The Synonym Finder.▲57

   Find the right words.

   2016 · amazon.com · its alternatives →

5. 5
   Simply Synonyms▲65

   A simple thesaurus extension for Chrome

   2020 · chromewebstore.google.com · its alternatives →

6. 6
   Wordi▲56

   Word-saving application for building new vocabulary

   2023 · play.google.com · its alternatives →

7. 7
   Writefull Thesaurus▲235

   A Google Docs add-on that uses AI to give you synonyms

   2017 · chromewebstore.google.com · its alternatives →

8. 8
   Lexios▲76

   Learn vocabulary effortlessy while browsing the web

   2021 · its alternatives →

9. 9
   Flipword▲95

   Vocabulary learning tool

   2023 · its alternatives →

10. 10
    Wordprobe▲84

    A thesaurus and translate app for Mac & iOS.

    2018 · wordprobe.com · its alternatives →

11. 11
    LanguageBeast▲95

    Learn English vocabulary that matters

    2024 · languagebeast.com · its alternatives →

12. 12
    Polyword▲98

    Snap at things to translate them in different languages! 📸

    2017 · apps.apple.com · its alternatives →

13. 13
    Orenoo▲63

    All-in-one english dictionary web app for language learners

    2019 · orenoo.com · its alternatives →

14. 14
    Wordeys▲94

    Save and practise relevant words to learn languages

    2016 · its alternatives →

15. 15
    Personalized Duolingo (kind of) for vocabulary building▲161

    Hi! Wanted to share the project I really wanted to have. TLDR; this app lets you create your own list of words and you get a Duolingo-like experience (kind of, still needs a lot of features) practicing those words in their context. My English is not the best but not the worst either. But I realized I can't boost it up after a certain level! In my belief, in order to truly learn a language, you need to be exposed to that language often. Vocabulary is the key factor here if you really want to improve in any language. My experience is that when I read a book to improve my English vocabulary, I…

    2025 · github.com · its alternatives →

16. 16
    Dashword App▲93

    Structure ideas, projects & concepts

    2021 · dashword.app · its alternatives →

17. 17
    CapWords▲135

    Learn a new language with AI-powered object recognition

    2025 · capwords.app · its alternatives →

18. 18SE
    Synonym, explain and guess word explanations▲27

    2019 · synonym.westeurope.cloudapp.azure.com · its alternatives →

19. 19
    Blarma▲81

    Build vocabulary - learn words & languages with techniques

    2022 · blarma.com · its alternatives →

20. 20
    Word of The Hour▲87

    Easily expand your vocabulary with a new word, every hour 🕖

    2018 · wordofthehour.org · its alternatives →

21. 21
    Underline▲133

    Expand your vocabulary while you browse the Internet

    2022 · getunderline.io · its alternatives →

22. 22IB
    I built an app to improve your Vocabulary▲69

    2011 · wordstash.com · its alternatives →

23. 23
    Wordie▲87

    Grow your vocabulary while you browse the web

    Apr 2026 · wordie.app · its alternatives →

24. 24
    Dictionary by Helperbird▲70

    A powerful but simple to use directory app for Google Chrome

    2019 · chromewebstore.google.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →