PDF manager, viewer and editor offering a seamless user experience on multiple devices. It's designed to be minimal, fast, and easy to set up using Docker.
PdfDing is an open-source document management project, with 1.8k GitHub stars and a health score of 81/100. It committed 263 times in the last twelve months across 11 of those months, and its status is actively maintained. Licence: AGPL-3.0. It has real momentum, so treat it as a live competitor rather than a stale repository.
| Status | Actively maintained — Committed within the last 45 days. |
|---|---|
| Last commit | 2026-08-15 |
| Days since last commit | 2 |
| Commits, last 3 months | 73 |
| Commits, last 12 months | 263 |
| Months with activity | 11 of 12 |
| Last release | 2026-08-11 |
| Archived | No |
| Licence | AGPL-3.0 |
| Category | Document Management |
Health score combines commit recency, twelve-month commit volume, months with activity, release recency and archive state. Metadata refreshed August 2026.
Copyleft (GPL, AGPL, MPL): derivative work must stay open. AGPL also covers software offered over a network, which blocks most closed SaaS wrappers.
This matters most when you plan to sell a hosted version. A permissive licence means anyone — including a competitor with more capital — can do the same, so your defensibility has to come from distribution, support or data, not from the code.
PdfDing is shipping code consistently, so a buyer comparing your product will find a maintained free option. Price and position against the total cost of self-hosting it, not against the paid incumbent's list price.
Assume every prospect can find a free version in five minutes. Your wedge has to be something open source structurally cannot deliver: compliance, support SLAs, managed hosting at scale, or a workflow the maintainers refuse to build.
Actively maintained. PdfDing recorded 263 commits over the last twelve months, with activity in 11 of those months and 73 commits in the last quarter. Last commit: 2026-08-15. Last release: 2026-08-11. Committed within the last 45 days.
PdfDing is published under AGPL-3.0. Copyleft (GPL, AGPL, MPL): derivative work must stay open. AGPL also covers software offered over a network, which blocks most closed SaaS wrappers.
41 open-source implementations, 22 of them actively maintained, led by Stirling-PDF at 90k stars. Saturation score 72/100 — Crowded. Free, maintained alternatives already dominate this category.
Document Management
Local hosted web application that allows you to perform various operations on PDF files, such as merging, splitting, file conversions and OCR.
Document Management
Scan, index, and archive all of your paper documents with an improved interface (fork of Paperless).
Document Management
E-book library manager that can view, convert, and catalog e-books in most of the major e-book formats and provides a built-in Web server for remote clients.
Alternative to DocuSign
Create, fill, and sign digital documents (alternative to DocuSign).
Document Management
Browse, read and download eBooks using an existing Calibre database.
Document Management
Powerful, privacy-first, client-side PDF toolkit that allows you to manipulate, edit, merge, and process PDF files directly in your browser.
IdeaProof scores your idea against live competitors, market size and 1,000+ documented startup failures in about two minutes.