Adala automates data labeling through an autonomous agent framework for organizing labeled datasets.
Open source
24 alternativesAnnotation Lab
NLP Lab provides annotation and labeling tools for language data, with updates to trial licensing and export filters.
About Annotation Lab
Annotation Lab (also referenced as NLP Lab) is a web-based annotation and labeling tool for language data, developed by John Snow Labs. It supports structured collaborative workflows for annotating and managing labeled datasets. The 4.10 release introduced in-app trial license generation (users submit an organizational email to receive a validation link, after which the license auto-imports to the platform), commenting and tagging features accessible from the labeling page, improved task export filters, and re-introduced video content type support for annotation projects.
Key features
- In-app trial license generation via organizational email submission
- Add, update, delete comments on labeling page tasks
- Create and manage tags directly from the labeling screen
- Filter exported annotations by task type and label class
- Support for video content type annotation projects
- Consistent list-type image path in Visual NER export JSON
Best for: Teams collaborating on annotation and labeling of natural language and visual language data for NLP projects benefit most.
Good for
- In-app trial license generation eliminates need for external navigation to obtain a license
- On-labeling-page commenting and tagging improve team collaboration and task organization
- Flexible export filters enable selective annotation export by task and label type
Annotation Lab at a glance
- Category
- AI & Machine Learning › AI Data & Analytics
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Annotation Lab FAQ
How do I generate a trial license for NLP Lab?
Submit your organizational email on the “Get License” tab in the License page, then click the validation link sent to your email to auto-import the trial license.
Where can I add comments to annotation tasks?
Comments can be added, updated, or deleted via the Comments option in the burger menu at the top right of the labeling page.
How can I filter which annotations are exported?
Use the new export filters to select annotations by task type or specific labels, classes, assertion labels, or relations to include in exports.
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