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%

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