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Free desktop PDF editing alongside a separate SDK offering

AI product designer that turns prompts or images into pages, components and frontend code.

Build desktop applications with JavaScript, HTML, and CSS using a Chromium and Node.js runtime.

A Python and R IDE that pairs script and notebook editing with live data exploration tools.

A website editor for writing HTML, CSS, and JavaScript with a directly editable Live View.

A distraction-free Markdown editor for local notes on Windows, macOS, and Linux.

Desktop story scheduling with an editor for links and interactive stickers

A free Markdown writing workspace with live preview, local files, and exports.

An open-source desktop code editor with native rendering, LSP, an integrated terminal, and SSH development.

A desktop client for connecting to SQL databases, browsing schemas, and running queries.

A cross-platform IDE for building Qt applications for desktop, embedded, and mobile targets.

One JavaScript and TypeScript test runner for browser, mobile, desktop, and extension workflows.

A browser editor for micro:bit projects with Blocks, JavaScript, Python, and a device simulator.

A cross-device Markdown editor with a free writing core and an optional lifetime Pro upgrade.

A terminal-native editor built around multiple selections, syntax-aware navigation, and language-server features.

A lightweight cross-platform editor/IDE with configurable compile, build, and run commands.

Write HTML, CSS, and JavaScript in a browser editor with an updating preview.

Record, replay, and inspect UI tests for desktop, web, and mobile applications.

Record and maintain UI tests for desktop, web and mobile applications with visual automation tools.

A desktop UI-test IDE that records, replays and reports tests against mobile apps, desktop programs and games.

Edit code, run project tasks, debug, use Git, and preview web work in a Mac-native IDE.

Choose a file-focused editor or add project-wide build and debug tools.

Free open-source desktop GUI prototyping

A desktop note environment for Markdown, source files, mind maps, PDFs, and other formats.