Text Annotation Tools

Web-based and standalone platforms for manually labeling, marking up, and annotating text data (documents, sentences, entities, translations). Includes collaborative annotation frameworks and crowdsourcing interfaces. Does NOT include automated labeling, evaluation metrics, or post-annotation analysis tools.

There are 81 text annotation tools tracked. 5 score above 50 (established tier). The highest-rated is davidjurgens/potato at 61/100 with 371 stars.

Get all 81 projects as JSON

curl "https://pt-edge.onrender.com/api/v1/datasets/quality?domain=nlp&subcategory=text-annotation-tools&limit=20"

Open to everyone — 100 requests/day, no key needed. Get a free key for 1,000/day.

#	Tool	Score	Tier	Stars	Language
1	davidjurgens/potato potato: the portable annotation tool	61	Established	371	Python
2	philenius/ngx-annotate-text This Angular component library is perfect for tasks like visualizing named...	61	Established	18	TypeScript
3	jiesutd/YEDDA YEDDA: A Lightweight Collaborative Text Span Annotation Tool. Code for ACL...	51	Established	1,073	Python
4	synyi/poplar A web-based annotation tool for natural language processing (NLP)	51	Established	530	TypeScript
5	webanno/webanno 🆕 Work continues on INCEpTION 👉...	50	Established	250	Java
6	johncmunson/react-taggy A simple zero-dependency React component for tagging user-defined entities...	49	Emerging	35	JavaScript
7	FXLP/MarkTool DoTAT...	48	Emerging	623	Vue
8	s-lilo/brat-peek Framework for working with brat-annotated .ann files	48	Emerging	10	Python
9	cdqa-suite/cdQA-annotator ⛔ [NOT MAINTAINED] A web-based annotator for closed-domain question...	46	Emerging	89	Vue
10	jkkummerfeld/slate A Super-Lightweight Annotation Tool for Experts: Label text in a terminal...	46	Emerging	112	Python
11	Wluper/matilda MATILDA: Multi-AnnoTator multi-language Interactive Lightweight Dialogue Annotator	45	Emerging	149	JavaScript
12	UniversalDataTool/react-nlp-annotate Interface for making NLP annotations.	44	Emerging	47	JavaScript
13	RTIInternational/SMART Smarter Manual Annotation for Resource-constrained collection of Training data	43	Emerging	229	Python
14	OHNLP/MedTator A Serverless Text Annotation Tool for Corpus Development	43	Emerging	60	JavaScript
15	Dumbris/trunklucator Python module for data scientists for quick creating annotation projects.	42	Emerging	84	Python
16	nlp-tlp/redcoat A lightweight web-based annotation tool for labelling entity recognition data.	40	Emerging	23	JavaScript
17	proycon/flat FoLiA Linguistic Annotation Tool -- Flat is a web-based linguistic...	40	Emerging	113	JavaScript
18	CLARIN-PL/Inforex Inforex is a web system for text corpora construction.	40	Emerging	12	JavaScript
19	paperai/pdfanno Linguistic Annotation and Visualization Tool for PDF Documents	40	Emerging	200	JavaScript
20	PranavHerur/ner-server Server endpoint for communicating with stanford-ner server	40	Emerging	25	JavaScript
21	dataqa/nlp-labelling Labelling platform for text using weak supervision.	38	Emerging	261	JavaScript
22	google-research/pangea Panoramic Graph Environment Annotation toolkit, for collecting audio and...	38	Emerging	20	JavaScript
23	aniruddha-adhikary/anitator A free text annotator	38	Emerging	20	Vue
24	sudodoki/nlp-how-to-annotate Set of guides and references for annotating NLP data	37	Emerging	16	—
25	taivop/awesome-data-annotation A list of tools for annotating data, managing annotations, etc.	37	Emerging	609	—
26	rmarquet21/streamlit-annotation-tools Streamlit Annotation Tools is a Streamlit component that gives you access to...	37	Emerging	99	TypeScript
27	davidheineman/thresh 🌾 Universal, customizable and deployable fine-grained evaluation for text generation.	37	Emerging	24	Vue
28	luisgasco/noytext A web-based platform for annotating short-text documents to be used in...	36	Emerging	10	R
29	Text-Mining/android-app اپلیکیشن اندروید فارسی‌یار: برنامه برچسب‌زنی پیکره‌های پردازش متن	35	Emerging	28	Java
30	luccalb/tiptap-annotation-magic An extension for the Tiptap editor, enabling the annotation of text. Comes...	35	Emerging	36	TypeScript
31	wiragotama/TIARA-annotationTool An Interactive Tool for Annotating Discourse Structure and Text Improvement	35	Emerging	16	JavaScript
32	INK-USC/AlpacaTag AlpacaTag: An Active Learning-based Crowd Annotation Framework for Sequence...	35	Emerging	137	HTML
33	hou2zi0/minimal-RTE__ner-training-data Minimal customization of Quill.js Rich Text Editor for easy annotation of...	34	Emerging	10	JavaScript
34	bakrianoo/rafah Rafah NLP Annotation Tool	34	Emerging	20	CSS
35	timoklimmer/neanno A tool for annotating texts and building annotation prediction models.	33	Emerging	7	Python
36	EttoreCaputo/streamlit-annotator st-annotator is a Streamlit component usefull to annotate text, expecially...	32	Emerging	7	TypeScript
37	cognitivefactory/interactive-clustering-gui An annotation tool for NLP data based on Interactive Clustering methodology.	32	Emerging	5	Python
38	nisheethjaiswal/Data-Annotator-for-SpaCy 🚀SpAnnor annotator for Named Entity Recognition easy to use tool. The...	31	Emerging	3	HTML
39	texttechnologylab/Unified-Dynamic-Annotation-Visualizer Tool for generating dynamic and interactive annotation visualizations.	31	Emerging	3	Java
40	AI-team-UoA/GreekQA-platform A Crowdsourcing Annotation Platform to collect question and answers on...	31	Emerging	3	JavaScript
41	objectscript/iknow-entity-browser Visualizer of relations between iKnow entities.	31	Emerging	1	JavaScript
42	naserih/texTRACTOR Pain Annotating Web Application	31	Emerging	2	JavaScript
43	dzieciou/tree-labeller Helps label training data using taxonomy information.	31	Emerging	4	Python
44	jdagdelen/mondigy A small component for using Mongodb databases with Prodigy annotation applications.	30	Emerging	9	Python
45	yasho191/SwiftAnnotate Auto labelling tool for Text, Image, Video	30	Emerging	3	Python
46	ysenarath/textflow Framework for Text Annotation.	29	Experimental	7	JavaScript
47	manishkumart/Super-Rapid-Annotator-Multimodal-Annotation-Tool This repository is part of the GSoC '24 project and demonstrates video...	28	Experimental	12	Python
48	salsowelim/tawseem NLP crowdsourcing platform for word-level annotations	28	Experimental	10	Go
49	MDD4REST/mdd4rest-annotator An Annotation Tool for annotating software requirements and generate static ontology.	28	Experimental	8	Python
50	tlack/hairytext A data labeling and NLP tool for Elixir (uses Spacy)	28	Experimental	25	Elixir
51	DocTAG/doctag-core This is the main repository for the DocTAG annotation tool. DocTAG is a...	27	Experimental	25	JavaScript
52	paperai/htmlanno Linguistic Annotation and Visualization Tool for XHTML Documents	26	Experimental	10	JavaScript
53	Antarlekhaka/code Multi-task NLP Annotation Framework	26	Experimental	6	JavaScript
54	yaraku/he-tool A tool for assisting human annotators with MQM-based annotation of...	26	Experimental	6	JavaScript
55	Yusuke196/CAIGen Checkbox-based annotation interface generator, presented in our ACL 2025 paper	25	Experimental	3	JavaScript
56	possible-worlds-research/wikinlp A package to download and preprocess a Wikipedia dump, in any language.	23	Experimental	9	Python
57	michalwols/cleanser-ui Data annotation tool	23	Experimental	3	JavaScript
58	astutic/Acharya A Data Centric NER annotation tool for your Named Entity Recognition projects	23	Experimental	47	—
59	LightTag/ylabel In browser active learning and guided search	23	Experimental	17	JavaScript
60	DIGIT-X-Lab/ANNOTATEX An open-source on-prem text annotation software suite.	22	Experimental	3	TypeScript
61	Grueneinsel/Arbonotate Browser-based workbench for annotating and comparing dependency trees in...	22	Experimental	—	JavaScript
62	ahwang16/mturk-templates A collection of MTurk templates designed to make complex tasks easier for...	21	Experimental	1	HTML
63	marcusklang/docforia Semistructured Multilayer Document Model	21	Experimental	9	Java
64	viktor-shcherb/fact-annotation Build lightweight knowledge graphs from text in minutes. Annotate entities,...	20	Experimental	4	Python
65	Oxid15/theme Minimalistic CLI labeling tool for text classification	20	Experimental	6	Python
66	GuyKeogh/wiki_verify Uses natural-language processing to help fact-check information in...	20	Experimental	5	Python
67	FrankGrimm/omen OMEN - A dockerized, collaborative, annotation platform.	19	Experimental	4	JavaScript
68	scurkovic/wd2tantivy A program for generating a tantivy index from a Wikidata dump.	19	Experimental	3	Python
69	E3-JSI/PREPARE-Extraction-Tool PREPARE Extraction Tool is an application to help create mappings between...	19	Experimental	—	TypeScript
70	FilamentAI/qa-annotation The Streamlit tool for the Filament Synthetic QA Pairs project, used to...	19	Experimental	4	Python
71	scurkovic/wikianc A program for generating the WikiAnc dataset.	17	Experimental	1	Rust
72	SaiedAlshahrani/Wikistats-to-CSV Wikistats-to-CSV (wikistats2csv) downloads Wikipedia Statistics for a given...	17	Experimental	1	Python
73	scurkovic/aida-conll-yago-wikidata A program for translating the AIDA CoNLL-YAGO dataset to use Wikidata QIDs...	17	Experimental	1	Rust
74	arunchaganty/natalann A simple, useful library for building natural language annotation interfaces.	17	Experimental	1	JavaScript
75	justindujardin/prodigy-viewer An app for reviewing and changing prodigy annotations after an annotation...	12	Experimental	8	TypeScript
76	NatLee/simply-labeling-platform-for-machine-reading This is a simple platform for labeling answers to questions in an article.	11	Experimental	3	Python
77	nlpAThits/ISNotes1.0 This repository provides a new MMAX2 annotation layer to 50 documents of the...	11	Experimental	3	Java
78	oprogramador/wiki-nlp Natural language processing of the Wikipedia text (as far English only) with...	11	Experimental	2	JavaScript
79	math-alpha/tamte_frontend Crowdsource Platform for Low Resourced Language Annotation and Corpus Contribution	10	Experimental	2	Vue
80	NatLee/simply-nlp-classification-labeling-platform This is a flask-based simply platform for labeling classification of a text.	10	Experimental	2	HTML
81	mattmazzola/slate-entity-labeler-next Use SlateJS to write and label text	10	Experimental	2	TypeScript