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A free, open-source Markdown editor for research notes and long-form writing.

Edit Python modules in a desktop window, run them in an interactive shell, and debug them with built-in tools.

A LaTeX source editor with command completion, error analysis and an integrated PDF viewer.

A Mac editor for drawing and developing typefaces.

A fantasy console with a compact Lua coding environment and built-in sprite, map, sound, and music editors.

Open a Git repository in a browser IDE backed by a Kubernetes development workspace.

Design, review, publish, and maintain API documentation alongside OpenAPI descriptions.

Edit, validate, transform, and publish XML in text and visual authoring modes.

Edit code on macOS with project search, multiple carets, bundles, and version-control actions.

A browser-based font editor backed by a local or remote server.

A source editor for LilyPond scores with music view, MIDI playback and score-building tools.

Design mobile app screens in a browser and program their behavior by assembling visual blocks.

Connect physical colour references with digital palettes and design files.

Discover free mockups and follow the original creator’s source.

Find presentation resources through detailed object categories.

Search product and print mockups with visible file specifications.

Create a custom box layout and review the artwork on a shared 3D preview.

Browse coordinated photo-based mockups and video presentation scenes.

Arrange box artwork with panel controls and a live production estimate.

Choose art-directed PSD scenes for print, products and devices.

Use a Git repository as a wiki that can be edited in a browser or a text editor.

Arrange and animate device scenes in a browser-based 3D editor.

Desktop story scheduling with an editor for links and interactive stickers

Turn screen recordings into framed product videos with captions and editable zooms.