Open-source PDF platform to edit, convert, OCR, sign, redact, and automate PDF workflows via a web UI and REST API.
90.5k stars8.2k forkslast commit Actively maintained
9 self-hosted Adobe Acrobat alternatives
Adobe Acrobat is a cloud-based PDF platform for creating, editing, converting, signing, and managing PDF documents via Acrobat web services and Adobe Document Cloud, supporting secure document workflows, form processing, and collaboration.
Alternatives to Adobe Acrobat
#2
Self-hostable DocuSign alternative to create fillable forms and collect legally binding eSignatures with API and webhooks.
18.4k stars1.8k forksAGPL-3.0last commit Actively maintained
#3
Self-hostable, privacy-first PDF toolkit that runs fully in the browser for editing, merging, converting, and processing PDFs without server-side uploads.
14.8k stars1.3k forksAGPL-3.0last commit Actively maintained
#4
Self-hosted PDF manager to organize, view, annotate, sign, and share PDFs with multi-device reading progress, tagging, and optional access-controlled links.
1.9k stars121 forksAGPL-3.0last commit Actively maintained
Self-hosted web UI for file conversion, OCR for PDFs/images, and local Whisper-based audio transcription, wrapping common CLI tools with background jobs and history.
1.1k stars72 forksMITlast commit Slowing down
Self-hosted web app for signing PDFs (single or multi-signer), organizing pages (merge/rotate/extract), editing PDF metadata, and compressing files.
826 stars107 forksAGPL-3.0last commit Actively maintained
Self-hosted web app that removes background music and reduces noise from videos or audio (including URLs), using FFmpeg and DeepFilterNet-based enhancement.
720 stars52 forksMITlast commit Likely dormant
Next.js web app that reads EPUB, PDF, DOCX, MD and TXT using pluggable TTS providers, offering real-time read-along highlighting, word timestamps, and audiobook export.
499 stars70 forksMITlast commit Actively maintained
Fork of Calibre-Web providing a Bootstrap-based web UI to browse, read, convert and serve eBooks, comics and PDFs from a Calibre database with Docker support.
235 stars6 forksGPL-3.0last commit Slowing down
What replacing Adobe Acrobat actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 6 of 9 shipped a commit in the last six months. Licences in this list: AGPL-3.0, MIT, GPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Document Processing & PDF Tools.
