Apps to Data export/import

Joplin is a free and open-source note-taking and to-do application designed for users who value data ownership, privacy, and flexibility. It offers robust synchronization options, including cloud services like Dropbox, OneDrive, and Nextcloud, as well as WebDAV. With support for Markdown, powerful search capabilities, and cross-platform availability, Joplin is a versatile tool for organizing information and boosting productivity.

Firebird is a powerful, open-source relational database management system (RDBMS) known for its small footprint, high performance, and low maintenance requirements. It offers support for major ANSI SQL standards, making it a reliable choice for various applications from embedded systems to enterprise solutions.

Kontact - KTimeTracker is a user-friendly time tracking tool designed for seamless integration within the Kontact suite. It allows individuals and teams to log time spent on various tasks and projects, aiding in productivity monitoring and reporting.

Calligra Braindump is a free and open-source mind-mapping and brainstorming tool designed to capture, organize, and visually represent ideas and information. It facilitates the process of dumping your thoughts onto a canvas and structuring them into a coherent map, supporting various input types like text, drawings, and images.

Rachota is a free, portable time tracking application designed for individual users, freelancers, or small teams managing multiple projects. It provides accurate tracking, insightful reports, and a simple interface without the need for installation or internet connectivity.

Chyrp is a remarkably lightweight and flexible blogging engine known for its flat-file architecture and modular design. Ideal for users seeking a fast, simple, and highly customizable platform without the overhead of a traditional database.

Etar is a free and open-source material design calendar application for Android, prioritizing privacy and a clean user experience. It focuses on core calendar functionalities like event management and reminders, offering data export/import and syncing capabilities without ads or excessive features.

Kontact is a comprehensive personal information management suite from KDE combining email, contacts, calendar, tasks, and news in one integrated application. It offers robust synchronization options and supports various protocols.

CMS Made Simple (CMSMS) is a robust, open-source Content Management System designed for developers and site owners seeking flexibility and control over their web presence. It provides a powerful web-based area for building, managing, and maintaining websites.

pgAdmin is a comprehensive open-source administration and development platform designed specifically for PostgreSQL databases. It offers a rich set of features for database management, querying, development, and monitoring, catering to both novice and experienced database professionals.

Jekyll is a powerful static site generator for building simple, blog-aware, static websites. It takes your content written in Markdown and Liquid, processes it, and generates a ready-to-deploy static website, eliminating the need for databases or complex servers.

Project Hamster is a personal time tracking application designed to help individuals monitor and manage how they spend their time across various activities. It resides conveniently in the system tray, offering a non-intrusive way to log activities and gain insights into daily time allocation.

SilverStripe is a free and open-source CMS and framework known for its developer-friendly environment and powerful content management capabilities. It provides a flexible platform for building complex websites and web applications.

Contao is a versatile, free, and open-source content management system designed for creating professional websites, intranets, and online applications. It emphasizes accessibility, SEO-friendliness, and provides a robust framework for developers.

Adminer is a free, single-file PHP tool for managing databases. It supports a wide range of database systems including MySQL, PostgreSQL, SQLite, MS SQL, Oracle, and more. Adminer provides a clean and efficient interface for database administrationtasks.

Plone is a robust, secure, and highly extensible free and open-source Content Management System (CMS) built on the Zope application server. It is designed for ease of use and offers powerful features for publishing, collaboration, and workflow automation.

MODX is a free, open-source content management system and web application framework powered by PHP and supporting MySQL/MSSQL. It offers a highly customizable and flexible platform for building and managing websites and online applications.

Tiki Wiki CMS Groupware is a free and open-source, all-in-one web-based application for collaboration and management. It combines a powerful wiki engine with comprehensive features for content management, project tracking, workflow, and office functions, making it a versatile solution for diverse organizational needs.

concrete5 is a powerful open-source Content Management System (CMS) known for its ease of use, featuring in-context editing and a flexible architecture. It enables users to build and manage websites and web applications with minimal technical expertise.

ImpressPages is an open-source PHP framework and content management system (CMS) designed for building websites quickly and efficiently. It features a user-friendly drag-and-drop interface, a modular architecture, and includes functionalities for blogging, e-commerce, and more. Its framework core provides flexibility for developers.

DBeaver is a powerful, open-source database tool for developers, database administrators, and analysts. It provides a universal and intuitive interface for managing databases, writing SQL queries, generating ER diagrams, and exporting/importing data for various database systems.

ProcessWire is a powerful and flexible open-source CMS and framework for building websites and web applications. Known for its elegant API and developer-friendly architecture, it offers a robust solution for managing content at any scale with emphasis on customization and ease of use.

Lightning is a comprehensive calendar and task management add-on for Mozilla Thunderbird and Seamonkey, designed to integrate seamlessly with email. It offers robust features for scheduling, task tracking, and synchronization with various online calendar services, enhancing productivity directly within your email client.

MySQL Workbench is a powerful and user-friendly visual tool for database architects, developers, and DBAs. It provides a unified environment for database design, development, management, and administration.

phpMyAdmin is a widely-used, free, and open-source web-based tool designed for the administration of MySQL and MariaDB databases. It provides a user-friendly interface for managing databases, tables, columns, relations, indexes, users, permissions, and more, all through a web browser.

Joomla is a robust, free, and open-source Content Management System (CMS) designed for creating and managing dynamic websites and online applications. It offers a user-friendly interface, extensive features, and high extensibility through its modular architecture.

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.

Grav is a fast, flexible, and open-source flat-file CMS (Content Management System) that simplifies website creation and management. Requiring no database, it leverages the power of Markdown and Twig templating for efficient content delivery and extensive customization.

Kolab Community is a comprehensive, free, and open-source groupware suite designed for collaborative work. It provides integrated email, calendar, contacts, and tasks functionalities, empowering individuals and teams to communicate and manage their data efficiently and with a strong focus on data privacy.

PrestaShop is a powerful and free open-source e-commerce solution, enabling businesses of all sizes to create and manage successful online stores. It offers a rich set of features out-of-the-box, alongside extensive customization options and a vast marketplace for extensions.