Label Studio is a multi-type data labeling and annotation tool with standardized output format
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Web Extension for saving a faithful copy of a complete web page in a single HTML file
CVAT is a leading data annotation platform for image, video, audio, and 3D datasets. It offers open-source, cloud, and enterprise products, as well as labeling services, with AI-assisted labeling, quality assurance, team collaboration, analytics, and developer APIs.
Multitrack Web Audio editor and player with canvas waveform preview. Set cues, fades and shift multiple tracks in time. Record audio tracks or provide audio annotations. Export your mix to AudioBuffer or WAV! Add effects from Tone.js. Project inspired by Audacity.
Use d3-annotation with built-in annotation types, or extend it to make custom annotations. It is made for d3-v4 in SVG.
The visual communication layer between humans and AI agents. Capture, annotate, render diagrams, and organize with AI — powered by Electron and Ollama. macOS & Linux.
A built-time CSS library for styling React components.
Pixano Elements - Re-usable web components dedicated to data annotation tasks.
Inline review tool for MDXG markdown — capture highlighted comments and export them as structured JSON for LLM agents.