Building Nox Suite: A Modern Office Suite Powered by LibreOffice

Building Nox Suite: A Different Take on Desktop Office Software

Hey everyone!

I've been working on a project called Nox Suite for about a month and a half, and I wanted to share what I'm building and get some feedback.

Nox Suite is a desktop office suite that brings together four applications:

• Nox Writer — Documents
• Nox Sheets — Spreadsheets
• Nox Slides — Presentations
• Nox PDF — PDF editing and document tools

The idea is to create a fast, modern, local-first alternative to traditional office software, with a focus on productivity and ease of use.

Why build another office suite?

I know LibreOffice, ONLYOFFICE, Microsoft Office and other alternatives already exist.

I'm not trying to reinvent everything from scratch.

Nox Suite uses the official LibreOffice engine for document processing, with a custom interface and additional functionality built around it.

My goal is to improve the overall experience, especially when working with multiple documents, editing PDFs and handling Microsoft Office formats.

What's different?

1. A redesigned interface

A modern interface built with Python and Qt6, designed to make everyday document work simpler.

1. Fusion

A workspace concept for working with multiple documents side by side, with deeper integration between applications planned.

1. Integrated PDF tools

PDF editing, annotations, document organization and other tools within the same suite.

1. Performance

I'm actively optimizing startup times, document loading and responsiveness.

1. Local-first

The goal is to let users work with their documents locally, without requiring a cloud service for everyday editing.

What about Microsoft Office compatibility?

This is one of my biggest priorities.

I'm testing DOCX, XLSX and PPTX files, particularly how well formatting and document content survive opening, editing, saving and reopening.

I'm also working on ways to preserve information that document conversion engines may otherwise lose.

Compatibility isn't perfect yet, and I don't want to claim otherwise.

I plan to publish real demonstrations comparing the results.

How is it being developed?

I'm using Claude extensively to help with implementation, testing, debugging and optimization.

My role is to design the product, define the features, coordinate development, evaluate results and make decisions about what gets built.

AI-assisted development is part of the process, but testing and reliability are essential to making the result useful.

Pricing and availability

Nox Suite is still under active development.

The current plan is:

• Windows and Linux first.
• macOS later.
• A one-time purchase rather than a recurring subscription.
• A seven-day free trial without requiring a credit card.

Important: Pricing, supported platforms, features and release dates are not final and may change before launch.

I'm aiming for a December release, but reliability and compatibility will determine when it's actually ready.

I'd love your feedback

If you use Microsoft Office, LibreOffice or ONLYOFFICE, I'd love to know:

What is one feature or problem that would make you consider switching to another office suite?

I'm particularly interested in document compatibility, PDF workflows, performance and productivity.

Thanks for reading! I'm looking forward to sharing more real demonstrations as development progresses.My site : noxos.eu