fit
The premium Open Source alternative to Garmin Connect SDK
🎯 Best for:Developers building high-concurrency fitness data processing pipelines in Go.
What is fit?
A high-performance Go library for encoding and decoding Garmin FIT files, supporting the FIT Protocol V2. It provides a native Go implementation for handling binary fitness data without C-bindings.
Tech Stack
GoDatabase & Storage
Why fit?
- • No CGO dependencies
- • Full Protocol V2 support
- • Strong type safety
Limitations
- • Library only (no GUI)
- • Requires Go expertise
- • Complex binary format
2/28/2026
Last Update
11
Forks
4
Issues
BSD-3-Clause
License
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Competitor Cost
-$1,440
/ year (est. based on Garmin Connect SDK)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%