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Best in class Annotation Tool

NLP Lab is the fastest and most efficient way for enterprise teams to annotate text, image and PDFs by leveraging the intelligence and accuracy of John Snow Labs NLP Libraries. This tool allows to annotate and review documents, but also to transfer this knowledge to DL models without writing a single line of code.

NLP Lab LabelStudio LabelBox LightTag TagTog Prodigy
Who is the
Free version for?
Teams looking for an enterprise-grade, proven, full-featured data labeling platform. Used by individual data scientists and small annotation teams. Small teams and individuals looking to test capabilities or validate early-stage experiments. Individual users Open: Only public labels & datasets. No Free version available
Free edition limitations: Unlimited Features Free Forever Limited to a single organization and workspace Limited to 10k annotations Limited to single user & 500 labels/month Limited to public datasets No Free version available
Labeling Features:
Text labeling Free Free Free Free Free Paid
Image labeling Free Free Free N/A N/A Paid
Video labeling Free Free Free N/A N/A Paid
Audio labeling Free Free N/A N/A N/A Paid
Multi-lingual text labeling Free Free N/A Free Team Paid
Span annotations & overlapping entities Free Free Free Free Free Paid
Label relations & dependencies Free Free Free Free Free Paid
Projects & Teams:
Multiple projects Free Free Free Team Free Paid
Project grouping Free N/A N/A N/A N/A N/A
Project searching/filtering Free N/A Free N/A N/A N/A
Full API access Free Free Pro Team Team Paid
Task assignment Free Enterprise Free Team Free N/A
Task tagging Free N/A N/A Team N/A N/A
Task comments Free N/A Free N/A N/A N/A
Role based task status Free N/A N/A N/A Free N/A
Duplicate tasks detection Free N/A N/A N/A N/A N/A
Task searching/filtering Free Free N/A Team Free N/A
Guidelines Free Free Free Free Team N/A
Feedback & Comments on completions Free N/A Free N/A N/A N/A
Consensus Analysis/IA Agreement Free Enterprise Pro Team Free N/A
Quality review workflows Free Enterprise Pro Team Team Paid
Performance Dashboards Free Enterprise Free Team Free N/A
QA & collaboration Free Enterprise Pro N/A N/A N/A
AI-Assisted Text Labeling
Project configuration based on existing models and rules Free N/A N/A N/A N/A Paid
Rule editing interface Free N/A N/A N/A N/A N/A
Pre-annotations with model assisted labeling Free Support for 3rd party ML integration Enterprise Team Enterprise Paid
Active learning: auto-retrain models on the fly Free Enterprise, Support for 3rd party ML integration N/A N/A Pro Paid
Transfer learning: start from pre-trained models Free N/A N/A N/A N/A Paid
Bring your own models Free Support for 3rd party ML integration Enterprise Team Free Paid
Precision/Recall Reports for Trained Models Free N/A N/A N/A N/A Paid
Model Hub Integration Free N/A N/A N/A N/A N/A
Security & Privacy:
Role-based access controls Free Enterprise Pro Team Enterprise N/A
Role-based views Free Enterprise N/A Team Enterprise N/A
Annotation Versioning Free N/A N/A N/A N/A N/A
Full audit trail Free N/A N/A Enterprise Enterprise N/A
LDAP/AD integration - User import/Login Free Enterprise Enterprise Enterprise Enterprise N/A
Single Sign On - User import/Login Free Enterprise Pro Enterprise Enterprise N/A
On-Premise / Air-Gap Deployment Free Enterprise Enterprise Enterprise Enterprise Paid
Annotation on PDF and image documents:
Support for multi-page scanned or generated PDFs OCR N/A N/A N/A Pro N/A
Selectable PDFs OCR N/A N/A N/A Pro N/A
Scanned PDFs OCR N/A N/A N/A N/A N/A
Support for image annotation (png) OCR N/A N/A N/A N/A N/A
Text search in image documents OCR N/A N/A N/A N/A N/A
Multi line chunk annotations OCR N/A N/A N/A N/A N/A
Sticky token selection OCR N/A N/A N/A N/A N/A
Custom region annotation OCR N/A N/A N/A N/A N/A
Relations annotation OCR N/A N/A N/A N/A N/A
Zoom features OCR N/A N/A N/A N/A N/A
Healthcare features:
Pre-annotations with rules & regex Healthcare N/A N/A N/A N/A Paid
Pre-annotations with dictionaries Healthcare N/A N/A N/A Team Paid
Automatic detection of 100+ clinical and biomedical entities Healthcare N/A N/A N/A N/A N/A
Automatic detection of clinical assertion status detection (negation detection) Healthcare N/A N/A N/A N/A N/A
Automatic detection of 30+ healthcare-specific relation extraction Healthcare N/A N/A N/A N/A N/A
Automatic entity normalization (coding) to 10+ medical terminologies Healthcare N/A N/A N/A N/A N/A
Transfer learning for named entity recognition models Healthcare N/A N/A N/A N/A N/A
Ready to use healthcare-specific word, chunk, and sentence embeddings Healthcare N/A N/A N/A N/A N/A

Read more on how to choose the best text annotation tools for your needs.

NLP Annotation Tool: Editions Compared

HEALTHCARE
FREE TRIAL
The Healthcare edition offer access to pre-trained healthcare models published on the NLP Models Hub.
  • All features from the Community library
  • Pre-annotations with rules & regex
  • Prompt based pre-annotation for entities and relations
  • Pre-annotations of 400+ clinical and biomedical entities with 1000+ pretrained healthcare models
  • Healthcare text classification with 59+ pretrained models
  • Automatic detection of clinical assertion status (negation detection)
  • Automatic detection of 60+ healthcare-specific relations
  • Transfer learning for named entity recognition models
  • Ready to use healthcare-specific word, chunk, and sentence embeddings
  • De-identification of healthcare documents
VISUAL
FREE trial
The visual edition offers access to OCR features for image preprocessing and digitization, as well as to Visual NER based preannotation and model training.
  • All features from the Community library
  • Support for annotations on multi-page scanned or generated PDFs
  • Support for image annotation (png)
  • Text search in image documents
  • Multi line chunk annotations
  • Visual NER model training/tuning
  • Sticky token selection
  • Custom region annotation
  • Relations annotation
  • Text preannotation in image or PDF documents
LEGAL & FINANCE
FREE trial
The Legal and Finance edition offer access to pre-trained legal and finance models published on the NLP Models Hub.
  • All features from the Community library
  • Pre-annotations with rules & regex
  • Prompt based pre-annotation for entities and relations
  • Pre-annotations with 155+ financial models and 900+ legal models deteting entities such as e.g. organizations, products, revenue, profit, losses, trading symbols, etc.
  • Legal and financial text classification and financial sentiment analysis
  • Legal and Financial assertion status detection
  • Legal and financial relation extraction
  • Legal and financial de-identification
  • Pretrained visual NER models for invoices
  • Transfer learning for NER legal and financial models

NLP Lab – The Most Widely Used Annotating Tool

Annotate Text & Images
  • High Productivity UI
  • Share Guidelines & Comments
  • Compare Versions & Reach Agreement Quickly
NLP Lab Annotate Text Images
AI Assisted Annotation
  • Pre-Annotation: Never Start from Scratch
  • API Access: Integrate with your toolset
  • Combine Models, Rules, and Prompts
NLP Lab AI Assisted Annotation
Train & Tune NLP Models
  • Auto NLP: Train as you go
  • Measure & Evaluate
  • Transfer Learning
NLP Lab Train Tune NLP Models
Models, Rules, and Prompts Hub
  • Search, Filter, and Download
  • Private Hub
  • Playground
NLP Lab Models, Rules, and Prompts Hub
Manage Projects & Teams
  • Workflows & Reviews
  • Versioning & Audit Trails
  • Analytics
NLP Lab Manage Projects Teams
Enterprise Security & Privacy
  • Role-Based Access Control
  • Strong Authentication: MFA, AD/LDAP
  • Runs on Your Infrastructure
NLP Lab Enterprise Security Privacy

Watch & Learn

Frequently Asked Questions

NLP Lab is a web-based application that serves as a complimentary annotation tool, available free of charge.

It becomes indispensable when you require text and image annotation, wish to refine and optimize NLP models, or increase your team's productivity by using AI assisted annotation.

Additionally, NLP Lab provides an array of specialized tools and features tailored for project and team management.

The best part?

You don't need any coding skills; everything is effortlessly accomplished through NLP Lab's user-friendly and intuitive interface.

The NLP Lab annotation tool included a comprehensive set of capabilities required for annotating various types of content, including Text, Images, Audio, Video, and HTML. It extends support for text annotation in over 250 languages. When you install this free annotation tool, you gain access to specialized annotation features for NLP tasks such as Classification, Named Entity Recognition, Assertion Status, Relation Extraction, Text Summarization.

To enhance productivity, NLP Lab provides AI-assisted annotation features. You can leverage existing models to pre-annotate tasks using the latest Spark NLP models for classification, Named Entity Recognition (NER), assertion status, and relation detection. You have the flexibility to either use default parameters for training your models or fine-tune the training process according to your specific needs.

Active learning is also included as a free feature in NLP Lab. It automatically trains new models as new data and annotations become available.

In addition to these core features, NLP Lab comes equipped with a suite of supplementary functionalities, including:

  • Over 30 templates for creating new projects
  • Unlimited number of projects and users
  • Import and export capabilities for projects, data, but also preannotation resources such as models, rules and promts
  • Predefined roles for your team members, facilitating easy customization of workflows tailored to your specific requirements
  • Consensus analysis and IAA charts (Inter Annotator Agreement)
  • Team performance dashboards

NLP Lab prioritizes enterprise-level security and privacy. It offers role-based access control to features and data, allowing you to control who can access specific views and features. The tool supports annotation versioning and maintains a comprehensive audit trail. Moreover, it seamlessly integrates with identity and access management solutions such as Azure AD and other systems through SAML for authentication and authorization.

Furthermore, all the features accessible through the user interface are also available via the NLP Lab API. This means you can select and integrate the features that best suit your workflow, tailoring them to your unique requirements.

Yes, NLP Lab by John Snow Labs is a free tool.

You can install it on AWS, Azure, OCI or on premise.

When you opt for a particular cloud provider, you only incur charges from the provider for the infrastructure required to deploy NLP Lab.

First of all, NLP Lab is the best in class annotation tool and it is free.

The only costs you might incur are associated with the infrastructure, should you choose to deploy it on one of the supported cloud providers, such as AWS, Azure, or OCI. However, if you prefer an on-premises deployment, there are no expenses involved.

Out of the box, NLP Lab provides you with free access to a wealth of resources, including hundreds of free models and pipelines. This enables you to jumpstart your annotation processes without any delay. You can also harness the power of knowledge transfer to deep learning models without the need to write a single line of code.

In addition to its annotation-related features, NLP Lab includes a comprehensive set of tools designed to facilitate team management. If your team consists of multiple annotators and requires a specific review process, along with controlled access to data and other project-related information, NLP Lab comes equipped with pre-configured roles that you can easily apply when defining your team. User management is designed to be exceptionally user-friendly and straightforward.

Everything that NLP Lab offers for free through its user interface is also accessible through NLP Lab's API. This means that if you have a more intricate workflow or need to integrate with your existing tools and processes, you can seamlessly achieve this using the API.

If you want to use one of the major cloud providers, search for it on AWS, Azure or OCI marketplaces, install and use it right away.

If you choose to use your own infrastructure the only thing you need is to run a single command line to get a fresh install, as documented in the Installation section of NLP Lab online documentation.

Absolutely, the NLP Lab annotation tool is meticulously crafted with the utmost focus on enterprise-level security and privacy. It incorporates robust security features, including role-based access control for both features and data, role-based access tailored to specific views, annotation versioning, and a comprehensive audit trail.

Moreover, right from the start, NLP Lab offers seamless integration with various identity and access management solutions. This includes compatibility with Azure AD, as well as the ability to integrate with other systems for the exchange of authentication and authorization through SAML.

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