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Capture, annotate and conceal details in Windows screenshots.

An open-source academic notebook that brings Markdown notes, PDF annotations, and literature management together.

Annotate lesson materials together with subject-specific drawing tools for online teaching.

An open-source notebook with a freeform canvas, handwriting, Markdown, and local files.

Evaluate, monitor, and govern LLM apps in one workspace

AI audio tools for podcasting, audiobooks, ads, learning, and news.

PDF reading, forms, and annotations on mobile devices

PDF content editing and comment export across devices

Annotate and analyze complex bioimages

Hire AI trainers and data labelers, or find AI training work.

Browser PDF markup with image and page tools

Collect and export PDF highlights and annotations

Convert, annotate, and organize PDFs in a browser

Free audio conversion with cue splitting and folder retention

An open-source desktop reading and annotation app

A specialist icon toolkit for audio software and plug-in interfaces.

Online text to speech with 130 languages, 30+ voices and 200+ audio tags.

Audio conversion, disc extraction, and console workflows

AI summarizer and repurposing tool for videos, podcasts, articles and documents

Microlearning app with daily audio insights from books and more in a voice you choose.

Audio infrastructure to record, transcribe and enrich audio through a single API.

Audio and video tools for people and AI assistants

Real-time speech enhancement SDK that helps Voice AI work reliably in noisy, real-world audio.

AI agent for notes, research, writing, slides, and media generation.