Manage and optimize PDF files

Personal library of scientific PDFs

A High-Precision Spreadsheet Program

Swiss Army Knife for PDF files

A private writing app to think in

Modern, feature-rich ebook reader

Track analog film usage in cameras

Financial calculations simplified

A simple bullet journal

Graphical diary and journal

Graphical Java application for managing BibTeX and biblatex (.bib) databases

Multi-platform EPUB ebook editor

Track the performance of an investment portfolio

BibTeX editor by KDE to edit bibliographies used with LaTeX

Productive PDF Software That You'll Love to Use

reStructuredText and Markdown editor

An Image Metadata Cleaner

Graphical interface for the PDF Toolkit (PDFtk)

Double-entry accounting and payroll for small business

Edit Markdown in style

Document Viewer

A stylish to-do list with built-in productivity timer

Build your own database — no programming required

Simple text editor for Markdown and reStructuredText

Mind Mapping & Brainstorming

The complete OCR suite

Create and print labels on Niimbot printers

Distraction-free text editor for Markdown

Spend your time wisely

Minimalistic document viewer