# NLTK

- **Canonical URI:** https://www.vioscale.ai/software/nltk
- **Category:** NLP Apis
- **Homepage:** https://www.nltk.org
- **Also known as:** nltk
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-26T19:30:47.282Z

## Vioscale score

**72.7 / 100**, confidence 21% (low). Computed 2026-09-01. _(updating — computed under an earlier model version or past its freshness window.)_

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 0 | 0.07844444444444446 | 0 | - |
| repo_stars | 78.6 | 0.026 | 2 | ✓ |
| integrations | 0 | 0.07033333333333334 | 0 | - |
| dependent_projects | 79.3 | 0.063 | 5 | ✓ |
| dev_activity | 63.1 | 0.094 | 5.9 | ✓ |
| release_cadence | 98.9 | 0.052 | 5.1 | ✓ |
| security_posture | 0 | 0.073 | 0 | - |
| package_downloads | 0 | 0.136 | 0 | - |
| security_score | 48 | 0.042 | 2 | ✓ |
| community_qa_activity | 0 | 0.063 | 0 | - |

## Pricing

_As of 2026-08-20, [verify at source](https://www.nltk.org). Independently observed._

Open source · Free tier

> Free and open source

## About

Provides access to linguistic corpora and text processing tools for tokenization, classification, parsing, and semantic analysis. Widely used in educational and research settings for computational linguistics work.

_Independently observed._

## Platform & deployment

- **Platforms:** CLI, macOS, Linux, Windows

## Release history

| Version | Date | Type |
|---|---|---|
| [v3.10.3-rc1](https://github.com/nltk/nltk/releases/tag/v3.10.3-rc1) | 2026-08-12 | stable |
| [v3.10.3](https://github.com/nltk/nltk/releases/tag/v3.10.3) | 2026-08-13 | stable |
| [v3.10.2-rc1](https://github.com/nltk/nltk/releases/tag/v3.10.2-rc1) | 2026-08-05 | stable |
| [v3.10.2](https://github.com/nltk/nltk/releases/tag/v3.10.2) | 2026-08-05 | stable |
| [v3.10.1-rc2](https://github.com/nltk/nltk/releases/tag/v3.10.1-rc2) | 2026-07-29 | stable |
| [v3.10.1-rc1](https://github.com/nltk/nltk/releases/tag/v3.10.1-rc1) | 2026-07-27 | stable |
| [v3.10.0](https://github.com/nltk/nltk/releases/tag/v3.10.0) | 2026-08-05 | stable |
| [v3.10.0-rc1](https://github.com/nltk/nltk/releases/tag/v3.10.0-rc1) | 2026-06-11 | stable |

## Security & compliance


Known vulnerabilities: 20 (15 in the last 12 months), max severity CRITICAL ([source](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=nltk&per_page=100)). A count reflects scale and disclosure, not quality.

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://www.nltk.org) | 2026-08-20 | 60% (medium) |
| pricing.model | open_source | [link](https://www.nltk.org) | 2026-08-20 | 60% (medium) |
| pricing.price_level | free | [link](https://www.nltk.org) | 2026-08-20 | 60% (medium) |
| pricing.transparent | yes | [link](https://www.nltk.org) | 2026-08-20 | 60% (medium) |

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 100 | [link](https://github.com/nltk/nltk/pulse) | 2026-08-26 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 14,702 | [link](https://github.com/nltk/nltk) | 2026-08-26 | 90% (high) |
| adoption.dependent_repos | 57,572 | [link](https://packages.ecosyste.ms/api/v1/packages/lookup?repository_url=https%3A%2F%2Fgithub.com%2Fnltk%2Fnltk) | 2026-08-26 | 85% (high) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | Python | [link](https://github.com/nltk/nltk) | 2026-08-26 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | Apache-2.0 | [link](https://github.com/nltk/nltk) | 2026-08-26 | 95% (high) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 2 | [link](https://github.com/nltk/nltk/releases) | 2026-08-26 | 70% (medium) |

### security

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| security.vulnerabilities | `{"count":20,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=nltk&per_page=100","last_12m":15,"max_severity":"CRITICAL"}` | [link](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=nltk&per_page=100) | 2026-08-26 | 90% (high) |
| security.scorecard | 4.8 | [link](https://api.securityscorecards.dev/projects/github.com/nltk/nltk) | 2026-08-26 | 90% (high) |

---
*Source: Vioscale (https://www.vioscale.ai/software/nltk). Independent, evidence-based software intelligence. Cite the canonical URI.*