
Inlinea
A Linux-first, annotation-focused PDF editor built with GTK4
What it does
Inlinea is an open-source, annotation-focused PDF editor focused on clean UX and native Linux experience. Features include: • Browser-style tabs • Inline and area highlights • Add-text-anywhere annotations • Dual-page reading mode • Lazy rendering for large PDFs • Embedded annotation saving Built with Python, GTK4 and Libadwaita.
Does the same job
all alternatives →- IBI built a free alternative to Adobe Acrobat PDF viewer2025 · github.com · ▲357
I built EmbedPDF: an MIT-licensed, open-source PDF viewer that aims to match all of Adobe Acrobat’s paid features… for free. Already working: - Annotations (highlight, sticky notes, free text, ink) - True redaction (content actually removed) - Search, text selection, zoom, rotation - Runs fully in the browser, no server needed - Drop-in SDK for React, Vue, Preact, vanilla JS Why? Acrobat is heavy, closed, and pricey. I wanted something lightweight, hackable, and embeddable anywhere. Demo: https://app.embedpdf.com/ Website: https://www.embedpdf.com/ GitHub:…
- OSOpen-Source DocumentAI with Ollama2025 · rlama.dev · ▲295
- EUExtend UI – open-source UI kit for modern document appsJun 2026 · extend.ai · ▲252
We're open-sourcing 14 components & examples today for PDF, DOCX, and XLSX viewers, plus bounding box citations, file upload, e-signature, and more. It's MIT licensed and fully customizable. Demo video here: https://share.extend.ai/kRmSGKRF When we started, we tried every file viewer and document component library we could find. Unfortunately, none of them had all the functionality (and polish) that we wanted, so we ended up building our own for https://extend.ai/. It was only ever meant to be internal, but enough customers kept asking for it that we decided to…



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