No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
flatbuffers has 98.9M monthly downloads and 26K GitHub stars. Version 25.12.19, first published in 2018.
It is actively maintained under a permissive license, last released in Dec 2025.
It is used by 289 tracked packages, including onnxruntime, tensorflow and timezonefinder.
GitHub topics include flatbuffers, serialization and serialization-library.
Package Insights
Package Risks
- No releases in 180 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
91
Adoption
80
Community
80
Provenance
0
How the maintenance status was determined
Last commit
18 days ago
Monthly downloads
98,909,988
•
Active
Activity within 30 days
Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
98,909,988
Stars
26,191
Stars per 1k downloads
0.26
•
Industry Standard
> 10,000,000 monthly downloads
Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
3,501,189
Month daily avg
3,297,000
Momentum
+6.2%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
Not specified
Cutting Edge
Minimum supported version is 3.12 or newer
Modern
Minimum supported version is 3.9, 3.10, or 3.11
Legacy
Supports 3.8 or older (or Python 2)
•
Unknown
No requires_python specified or unparseable
Package does not declare a minimum Python version.
License categories
License
Apache 2.0
•
Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
199 days ago
Total releases
26
Releases/year
3.2
Rapid
Last release within 365 days and > 12 releases/year
•
Regular
Last release within 365 days
Slow
Last release 366-730 days ago
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
732
Monthly downloads
98,909,988
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
•
Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
87
Issue Burden
3.9
per 1k stars
Discussions
2.6
per 1k stars
Fork Ratio
20.3%
contrib / forks
Stale Release
180d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
2.7M
Windows
125.8K
macOS
50.5K
Python Versions
3.13
44.2%
1.2M
3.12
31.3%
857.8K
3.11
12.0%
328.4K
3.10
9.1%
248.2K
3.14
3.4%
92.7K
Top Countries
1.
US
2.1M
US
2.
IN
395.7K
IN
3.
HK
54.6K
HK
4.
DE
44.7K
DE
5.
SG
40.5K
SG
6.
CN
29.0K
CN
7.
NL
27.6K
NL
8.
JP
27.2K
JP
9.
GB
24.2K
GB
10.
CA
21.5K
CA
Dependencies
0
No dependencies
Used By
289
- onnxruntime
- tensorflow
- timezonefinder
- onnxruntime-gpu
- mediapipe
- tensorflow-cpu
- onnx2tf
- ai-edge-litert
- tf-nightly
- openmeteo-sdk
- tf2onnx
- rlbot
- executorch
- tensorflow-intel
- tensorflow-cpu-aws
- tensorflow-aarch64
- tosa-tools
- tosa-adapter-model-explorer
- litert-converter
- tablestore
- ethos-u-vela
- tflite
- ai-edge-litert-nightly
- pte-adapter-model-explorer
- onnxruntime-openvino
- onnxruntime-directml
- tflite-model-maker-nightly
- tf-nightly-cpu
- litert-lm-builder
- iatoolkit
- vastdb
- tflite-support
- seldon-core
- onnxruntime-training
- rainbow-rb-zenoh
- mediapipe-nightly
- onnxruntime-qnn
- kups
- onnxruntime-rocm
- onnxruntime-windowsml
- rainbow-rb-flat-buffers
- circle-schema
- openscvx
- rainbow-rb-schemas
- foxglove-schemas-flatbuffer
- fudstop
- tf-nightly-cpu-aws
- litert-lm-builder-nightly
- onnxruntime-webgpu
- ubo-app
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
Apache 2.0
First Release
June 11, 2018
Last Release
6 months ago
Last Commit
2 weeks ago
Latest Version
25.12.19
Total Releases
26
Contributors
732
Open PRs
149
Archived
No
Author
Derek Bailey
Python Versions
2
3
Wheels
py2
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh