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flatbuffers: all versions and old releases

Memory efficient serialization library

Google, Inc Languages & SDKs #56 Languages & SDKs

2 versions of flatbuffers are listed here, from February 11, 2025 to the current 25.12.19. Each one links to the publisher’s own installer files.

2025: 2 2 25
VersionDateSizeFiles
25.12.19Latest December 19, 2025 — 64-bit ZIP
Release notes
What's Changed
- docs: clean up whitespace and fix typo in tutorial.md by @daynual in #8695
- Correct span and non-span versions of ToArray() and ToArrayPadded() methods by @vsmcea in #8734
- [Swift] Fixes test failing on macOS when using URL(fileURLWithPath:isDirectory) by @mustiikhalil in #8742
- treat npm_typescript as a dev dependency by @dws in #8719
- [Dart] Fix union unpacking by @jakobkordez in #8748
- [Dart] Fix struct vector ordering in pack function by @jakobkordez in #8747
- Add conditional check by @coder7695 in #8736
- [Dart] Refactor lazy list unpacking by @jakobkordez in #8746
- Prevent make_span from working with vectors and arrays of pointers by @are-you-tilted-already in #8735
- Swap the dependency of CreateX and X::Pack object API functions. by @cosmith-nvidia in #8754
- [Swift] Implements FlatbuffersVector which confirms to RandomAccessCollection by @mustiikhalil in #8752
- Fix --gen-compare to not generate comparators for native types. by @cosmith-nvidia in #8681
- Support native_type for tables when using the C++ object API. by @cosmith-nvidia in #8668
- [Swift] Improves the performance creating strings by @mustiikhalil in #8772
- [Docs] Update swift supported features by @mustiikhalil in #8769
- [Swift] Bump minimum supported version of swift to 5.10 by @mustiikhalil in #8758
- [Swift] Inline arrays by @mustiikhalil in #8755
- Replace usage of make_unique with unique_ptr for cpp11 by @fliiiix in #8763
- Fix Issue #8653 - Python vtables not considering object size by @jtdavis777 in #8683
- [C++] Add Vector64 specialization for std::vector<bool> by @jtdavis777 in #8757
- Stop calling setup.py in release CI by @jtdavis777 in #8771
- [lua] Dont' crash on a fbs file with no root table by @jtdavis777 in #8770
- Revival of GH-8285: fix: remove a single type hint to retain python 2.7.x compatibility by @jtdavis777 in #8799
- [Python] Add unit test for github issue 8653 by @satur9nine in #8786
- Size verifier fix 2 by @fergushenderson in #8740
- Fix issue #8389: any nonzero byte is truthy by @bkietz in #8690
- Add Dart changelog entry for v25.9.23 by @vaind in #8785
- [dart] fix bug which generated wrong code by @fawdlstty in #8780
- add assert to fix GCC warning on Ubuntu 24.04 LTS by @gafferongames in #8804
- chore: fix quick start typos by @Homeblest in #8520
- [Java] Generate Longs from uint enums by @nevi-me in #8727
- [Java] Add notify to Java keywords by @nevi-me in #8724
- More robust C++20 check by @cyyever in #8631
- [Dart] Fix dart object api test by @jakobkordez in #8751
- feat: library definition for PlatformIO by @obones in #8261
- Use macos-15-intel not macos-latest-large for Intel macOS by @kou in #8777
- [C++] Fix vtable deduplication for 64-bit buffers >2GB by @gowsiany in #8591
- Bump js-yaml from 4.1.0 to 4.1.1 in the npm_and_yarn group across 1 directory by @dependabot[bot] in #8779
- TypeScript: read vtable entries as uint16 by @jtbandes in #8435
- [fuzzer] Adds code generation target. by @coder7695 in #8795
- [CI] Revert back to using swift-actions by @mustiikhalil in #8806
- [Python] Fix inconsistent creator function naming in generated code by @peter-soos in #8792
- Remove legacy Conan recipe and update documentation by @uilianries in #8712
- [Python] Fix generating init.py for invalid path by @fliiiix in #8810
- [Python] Optimize Builder startup: lazy sharedStrings and fast vtable init by @satur9nine in #8807
- Fix platform ifdefs for locale independent str functions by @jamesr in #8678
- fix CScript string.compare by @whitecostume in #8547
- [Go] add BenchmarkBuildAllocations by @jdemeyer in #8287
- [Go] Write required string fields into the buffer when using Object API by @razvanalex in #8402
- [Java] Use Table's fully qualified path by @nevi-me in #8729
- [Python] Optimize Offset/Pad/Prep: use cached head and slicing by @satur9nine in #8808
- [CI] Migrating to swift Wasm on for Github actions by @mustiikhalil in #8814
- Modernize GitHub CI actions by @fliiiix in #8812
- [Swift] Flexb
v25.2.10 February 11, 2025 — 64-bit ZIP

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