Text analysis APIs perform natural language processing tasks like sentiment analysis, entity extraction, and language detection. Add intelligent text processing to your applications.
| Name | Description | Auth | HTTPS | CORS | Status |
|---|---|---|---|---|---|
| apilayer languagelayer | Language Detection JSON API supporting 173 languages | oauth | Yes | unknown | unknown |
| Aylien Text Analysis | A collection of information retrieval and natural language APIs | apikey | Yes | unknown | unknown |
| Cloudmersive Natural Language Processing | Natural language processing and text analysis | apikey | Yes | yes | unknown |
| Code Detection API | Detect, label, format and enrich the code in your app or in your data pipeline | oauth | Yes | unknown | unknown |
| ELI | Natural Language Processing Tools for Thai Language | apikey | Yes | unknown | unknown |
| Google Cloud Natural | Natural language understanding technology, including sentiment, entity and syntax analysis | apikey | Yes | unknown | unknown |
| Lecto Translation | Translation API with free tier and reasonable prices | apikey | Yes | yes | unknown |
| LibreTranslate | Translation tool with 17 available languages | none | Yes | unknown | unknown |
| Semantria | Text Analytics with sentiment analysis, categorization & named entity extraction | oauth | Yes | unknown | unknown |
| Sentiment Analysis | Multilingual sentiment analysis of texts from different sources | apikey | Yes | yes | unknown |
| Watson Natural Language Understanding | Natural language processing for advanced text analysis | oauth | Yes | unknown | unknown |
1 of these APIs require no authentication — you can start making requests immediately without signing up for an account. Just pick one from the table above, check its documentation, and send your first request.
6 APIs in this category require a free API key. This usually means creating a free account on the provider's website and copying your key from the dashboard. The process typically takes less than a minute.
Not sure where to start? Look for APIs marked as "alive" in the status column — these were recently verified as working. For browser-based projects, check that the API supports CORS.
Yes, all APIs listed on API Bouncer have a free tier. Some are completely open (no sign-up needed), while others require a free account to get an API key. Free tiers typically have rate limits — check each API's documentation for specifics.
It depends on your needs. Consider: Do you need authentication or prefer no-auth? Does your project need CORS support for browser access? How many requests will you make? Start with a no-auth API to prototype quickly, then switch to a more feature-rich option if needed.
We run periodic health checks on all listed APIs. The "Status" column shows whether each API was responding at our last check. APIs marked as "alive" were recently verified. You can also test any API yourself using curl or our guides on testing APIs.
Most free APIs allow commercial use, but terms vary by provider. Always check the specific API's terms of service. Some APIs have separate free and commercial tiers with different rate limits.
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