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Butterfly, developed by LinwoodCloud, is an open-source note-taking application designed to prioritize the user’s creative flow by keeping the interface minimal and the tools instantly accessible. Currently at version 2.4.2 and backed by a total of 31 public releases, the program belongs to the Office & Productivity category and is aimed at students, researchers, designers, and anyone who needs to capture thoughts, sketches, or structured documentation without wrestling with complex menus. The canvas supports freehand drawing with pressure-sensitive styluses, typed text blocks, geometric shapes, and reusable image assets, making it equally suitable for quick mind-maps, lecture annotations, storyboard drafts, or detailed technical diagrams. Pages can be organized into hierarchical notebooks, exported as PDF, SVG, or PNG, and synchronized across devices through any WebDAV-compatible cloud storage, giving teams a lightweight alternative to bulkier collaborative suites. Because the project is released under the AGPL license, advanced users can self-host the synchronization back-end or contribute code to the actively maintained GitHub repository, ensuring that features such as end-to-end encryption, markdown import, and plugin-based extensibility evolve in direct response to community feedback. The installer for Windows is available for free on get.nero.com, where downloads are provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.
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