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Calibre

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Jun 29, 2026 Last updated
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Old Calibre Versions

The packages listed here belong to earlier Calibre releases, not the current build. The archive represents versions 6.29.0, 6.28.1, 6.28.0, 6.27.0, 6.26.0, 6.25.0, 6.24.0, 6.23.0, 6.22.0, and 6.21.0, plus 143 additional entries, while the main package page currently records 9.9.0.

The archive is intended for version research and package identification rather than as a second review of the same software. Its value comes from showing which older builds existed, how they were packaged, and which operating systems those files targeted.

Calibre Version Archive

The page contains 1026 archived packages across 153 recorded versions. The visible version set is 6.29.0, 6.28.1, 6.28.0, 6.27.0, 6.26.0, 6.25.0, 6.24.0, 6.23.0, 6.22.0, and 6.21.0, plus 143 additional entries, and the package rows identify macOS dmg, Windows installer, Source code, AMD 64-bit Linux binary, ARM 64-bit Linux binary, Calibre Portable, OS X dmg, and 32bit Linux binary, plus 10 additional entries as the associated operating-system coverage.

Package identification can be checked against names such as calibre-6.29.0.dmg, calibre-64bit-6.29.0.msi, calibre-6.29.0.tar.xz, calibre-6.29.0-x86_64.txz, calibre-6.29.0-arm64.txz, calibre-portable-installer-6.29.0.exe, calibre-portable-installer-6.28.1.exe, and calibre-6.28.1.tar.xz, plus 1018 additional entries. Across the inventory, DMG, MSI, TAR.XZ, TXZ, and EXE formats appear, reflecting the different installation or portable-delivery methods used by these releases.

  • Archived versions: 6.29.0, 6.28.1, 6.28.0, 6.27.0, 6.26.0, 6.25.0, 6.24.0, 6.23.0, 6.22.0, and 6.21.0, plus 143 additional entries.
  • Recorded platforms: macOS dmg, Windows installer, Source code, AMD 64-bit Linux binary, ARM 64-bit Linux binary, Calibre Portable, OS X dmg, and 32bit Linux binary, plus 10 additional entries.
  • Package formats: DMG, MSI, TAR.XZ, TXZ, and EXE.
  • Stored package records: 1026; records with checksums: 1047.

Working With Archived Calibre Releases

Use this archive when the exact Calibre version is part of the problem being investigated. Examples include checking an inherited workstation, rebuilding an older environment, validating a migration, or matching a package name found in deployment records.

Version age introduces trade-offs. An old build may match a legacy dependency but lack later fixes, current platform support, or changes to external services. Testing should therefore happen on non-critical data or an isolated system before the package is used operationally.

Package and Platform Compatibility

The archived package rows cover macOS dmg, Windows installer, Source code, AMD 64-bit Linux binary, ARM 64-bit Linux binary, Calibre Portable, OS X dmg, and 32bit Linux binary, plus 10 additional entries. A package should only be evaluated against the platform and architecture it was built for; similarly named files can still target different systems or installation methods.

The DMG, MSI, TAR.XZ, TXZ, and EXE formats shown in the file set represent different delivery methods. Record the selected filename alongside the version so another person can identify the same historical package later.

Checksums and File Identification

The archive retains checksum values for 1047 packages out of 1026. Available digest types include MD5, SHA1, and SHA256; these are identification records rather than a substitute for compatibility or security review.

A checksum comparison only works when both sides use the same algorithm. Exact filename, version, size, source record, and digest should be considered together when documenting the provenance of an old package.

Choosing Between Old and Current Versions

The main listing and archive serve different purposes: 9.9.0 appears on the current page, while 6.29.0, 6.28.1, 6.28.0, 6.27.0, 6.26.0, 6.25.0, 6.24.0, 6.23.0, 6.22.0, and 6.21.0, plus 143 additional entries are preserved here for historical package identification.

In most cases, start with the current Calibre page because later releases may include compatibility changes, maintenance fixes, and updated platform support. Choose an archived version only when a documented requirement justifies it.

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