Calibre vs Send to Kindle: catalog facts
 Calibre |  Send to Kindle |
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Free Free and open source, funded by donations. |
Free Free download from Amazon. |
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Windows, macOS, Linux |
macOS |
- Converts between all the major ebook formats, including for Kindle
- Fetches metadata and covers from the internet automatically
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- Sends personal documents straight to a Kindle library
- Official Amazon tool
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- The interface is dense and has accumulated two decades of features
- It will not remove DRM; that requires third-party plug-ins with their own legal questions
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- Requires an Amazon account
- Only works with Kindle devices and apps
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Downloadable app |
Downloadable app |
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Open source |
Closed source |
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License: GPL-3.0 |
License not stated |
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No account needed |
Account needed |
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Works offline |
Needs internet |
Checked September 20, 2026 | Checked October 1, 2026 |
Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.
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