Apps to Works Offline

RedNotebook is a free and open-source desktop journal and diary application offering a clean interface and features for organizing notes, thoughts, and ideas with a calendar view, tag search, and basic text formatting.

GNU Privacy Guard (GnuPG or GPG) is a free and open-source implementation of the OpenPGP standard, widely used for encrypting and signing data and communications. It provides a robust suite of command-line and graphical tools to protect sensitive information.

Sky Map is a user-friendly Android planetarium app that turns your device into a window to the universe. Simply point your phone at the sky to identify stars, constellations, planets, and more. It's an excellent tool for both casual stargazers and budding astronomers.

wikidPad is a free and open-source wiki-like notebook application that allows you to store your thoughts, notes, and snippets of information in a highly organized and cross-referenced manner. Its strength lies in the effortless creation of links between pages, making it easy to navigate and connect related ideas.

Leanote is a versatile self-hosted note-taking application that blends rich text editing with Markdown support. It offers seamless synchronization across multiple devices and features built-in blog publishing capabilities, making it a powerful tool for both personal information management and content creation.

KeePassDroid is a robust and open-source password management application for Android devices, offering strong encryption and compatibility with the popular KeePass password safe format. It provides secure local storage for your credentials, ensuring your sensitive data remains protected on your device.

Tomboy is a free and open-source desktop note-taking application designed for simplicity and efficiency across Linux, Unix, Windows, and macOS. It utilizes a wiki-like interface for easy linking between notes and offers features like automatic linking, full-text search, and local storage, making it an accessible and reliable tool for organizing your thoughts and tasks.

Stellarium is a free and open-source planetarium software that allows users to explore the night sky from the comfort of their computer. It displays a realistic 3D rendering of the celestial sphere, showing stars, constellations, planets, and other astronomical objects in accurate positions at any given time.

LaTeX Beamer and Prosper offer powerful, LaTeX-based document preparation for creating highly professional and customizable presentations with advanced typesetting capabilities.

Simplenote is a minimalist note-taking application designed for speed and efficiency. It provides a clean interface across multiple platforms, focusing on text-based notes with robust synchronization and versioning capabilities. Ideal for capturing ideas quickly and accessing them anywhere.

Zim is a powerful, open-source graphical text editor designed for maintaining a personal wiki or notebook. It allows users to organize notes, ideas, and various types of information in a hierarchical, interlinked structure, similar to a wiki.

KeePassX is a free and open-source password manager that securely stores your passwords offline. It provides strong encryption and a simple interface for managing sensitive login information.

FreeMind is a robust, open-source, and free mind mapping software written in Java. It's a versatile tool for brainstorming, organizing thoughts, managing projects, and structuring knowledge hierarchically, providing a flexible canvas for visual thinking.

Laverna is a privacy-focused, open-source note-taking application designed for secure personal information management. It offers a robust Markdown editor, strong encryption capabilities, and offline access, making it an ideal solution for users prioritizing data privacy and a seamless note-taking experience across devices.

draw.io is a versatile online diagramming tool providing a rich feature set for creating professional diagrams of all types. It offers robust integrations with major cloud storage providers and office suites, enabling seamless collaboration and accessibility. Its intuitive interface makes diagram creation straightforward for users of all skill levels.

ReText is a straightforward yet effective text editor designed primarily for authoring documents in Markdown and reStructuredText. It provides essential features like live preview and syntax highlighting, making it a suitable choice for writers and developers who prefer lightweight, plain text formats.

KeePass is a free, open-source, and highly secure password manager. It stores your passwords in a strong encrypted database, accessible with a single master password or key file. Offering robust security features and extensive customization options, KeePass is an excellent choice for users prioritizing data privacy and control.

Inkscape is a powerful, free, and open-source vector graphics editor widely used for creating scalable vector graphics (SVG). It's suitable for a range of design tasks, from illustrations and logos to web graphics and PDF editing, offering a robust set of tools comparable to commercial software.

Kiwix is a powerful, free, and open-source offline web browser designed to access educational and informational content, such as Wikipedia and Project Gutenberg, without requiring an internet connection. It is highly portable and supports multiple languages, making knowledge accessible anywhere.

LibreOffice is a powerful, free, and open-source office suite for text editing, spreadsheets, presentations, and more. It's compatible with a wide range of file formats, including Microsoft Office documents, making it a versatile alternative for personal and professional use across various operating systems.

impress.js is a cutting-edge presentation framework that leverages the power of modern web technologies, specifically CSS3 transforms and transitions, to create dynamic and engaging non-linear presentations directly within your web browser.