Monstera PDF Editor

Monstera PDF Editor

Tenslor Inc.
PDFpenPro

PDFpenPro

Smile Software
Monstera PDF Editor PDFpenPro

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Monstera PDF Editor:

About

Monstera PDF Editor is a free, open-source desktop application for Windows 10 and 11, with more than 150 tools for editing, converting, organizing, and securing PDF documents without subscriptions, accounts, or watermarks. Users can edit PDF text and objects, merge and split files, manage pages, create and fill forms, add signatures and annotations, compare documents, and permanently redact sensitive information. OCR in 14 languages makes scanned PDFs searchable. The built-in AI assistant supports 10 providers and can summarize, analyze, and answer questions about documents using the user's own provider credentials. Standard PDF operations run locally, and Windows AppContainer isolation helps protect the system while documents are processed. Distributed through the Microsoft Store, Monstera is licensed under GNU AGPL-3.0, and its source code is publicly available on GitHub.
PDFpenPro:

About

Powerful PDF Editing On Your Mac. Add signatures, text, and images. Make changes and correct typos. OCR scanned docs. Fill out and create forms. Export to Microsoft® Word, Excel, PowerPoint. With PDFpenPro, you can add text and signatures, make corrections, OCR scanned docs and more, just like PDFpen. But PDFpenPro goes beyond, with more powerful features. Make a scanned form come alive with PDFpenPro! Build interactive forms with text fields, checkboxes, radio buttons, interactive signature fields and submit buttons! Export your PDFs not just in .docx format for the Microsoft® Word users in your life, but also .xlsx for Excel, .pptx for PowerPoint, and PDF/A for archival PDFs. Whether it’s a single Web page or a whole site, make it into a PDF complete with clickable links. Now you can edit your PDFs wherever you are. Use iCloud or Dropbox for seamless editing with PDFpen for iPad & iPhone.
Monstera PDF Editor:

Platforms Supported

Windows Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
PDFpenPro:

Platforms Supported

Windows Not Supported
Mac Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
Monstera PDF Editor:

Audience

Monstera PDF Editor is designed for individuals, students, educators, freelancers, small businesses, enterprises, legal professionals, administrative teams, researchers, and organizations that regularly work with PDF documents. It is particularly suitable for Windows users seeking professional document editing capabilities, privacy-focused local processing, and an open-source alternative to subscription-based PDF software.
PDFpenPro:

Audience

Anyone who needs a powerful PDF editor for Mac
Monstera PDF Editor:

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported
PDFpenPro:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
Monstera PDF Editor:

API

Offers API Not Supported
PDFpenPro:

API

Offers API Not Supported
Monstera PDF Editor:

Screenshots and Videos

No images available
PDFpenPro:

Screenshots and Videos

Monstera PDF Editor:

Pricing

$0
Free at $0 with no subscription or account required; the optional AI assistant requires third-party provider credentials and may incur separate provider charges.
Free Version Supported
Free Trial Not Supported
PDFpenPro:

Pricing

$124.95 one-time fee
Free Version Not Supported
Free Trial Supported
Monstera PDF Editor:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
PDFpenPro:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
Monstera PDF Editor:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
PDFpenPro:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
Monstera PDF Editor:

Company Information

Tenslor Inc.
Founded: 2026
United States
monsterapdf.com
PDFpenPro:

Company Information

Smile Software
Founded: 2003
United States
smilesoftware.com/pdfpenpro/
Monstera PDF Editor:

Alternatives

No Alternatives
PDFpenPro:

Alternatives

PDF Reader Pro

PDF Reader Pro

PDF Technologies, Inc
5.0 out of 5 stars
PDFpenPro:
PDFpen

PDFpen

Smile Software
PDFpenPro:
PDF Editor

PDF Editor

PULKITSOFT LLP
PDFpenPro:
PDFAid

PDFAid

4.3 out of 5 stars
Monstera PDF Editor:
PDFpenPro:
PDF Architect

PDF Architect

pdfforge
3.7 out of 5 stars
Monstera PDF Editor:

Categories

PDF Editors Supported
PDFpenPro:

Categories

Digital Signature Supported
OCR Supported
PDF Supported
PDF Editors Supported
PDFpenPro:

OCR Features

Batch Processing Supported
Convert to PDF Supported
ID Scanning Not Supported
Image Pre-processing Not Supported
Indexing Not Supported
Metadata Extraction Not Supported
Multi-Language Supported
Multiple Output Formats Not Supported
Text Editor Not Supported
Zone Selection Tool Not Supported

PDF Features

Annotations Supported
Convert to PDF Supported
Digital Signature Supported
Encryption Supported
Merge / Append Supported
PDF Reader Supported
Watermarking Supported
Monstera PDF Editor:

Integrations

Claude Supported
DeepSeek Supported
Dropbox Not Supported
Gemini Supported
Microsoft 365 Not Supported
Microsoft Excel Not Supported
Microsoft Word Not Supported
OpenAI Supported
iCloud Not Supported
PDFpenPro:

Integrations

Claude Not Supported
DeepSeek Not Supported
Dropbox Supported
Gemini Not Supported
Microsoft 365 Supported
Microsoft Excel Supported
Microsoft Word Supported
OpenAI Not Supported
iCloud Supported
Monstera PDF Editor:
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Claim Monstera PDF Editor and update features and information
PDFpenPro:
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