WinBtrfs - an open-source btrfs driver for Windows

Development of userspace BTRFS tools

Janus: a state-of-the-art file system fuzzer on Linux

Fast block device sync with digest, designed to improve block-based backups.

Linux kernel source tree -- Btrfs commits

Tiny Btrfs maintenance daemon

Policy-Driven Multi-Tier File System

Haskell bindings to the btrfs API

Simple null block device manager script, useful for zoned device testing.

Fork of kdave/btrfs-progs, allowing to build distinct binaries for specific btrfs subcommands with elevated privileges (fscaps, setuid)

Rough parser for btrfs file systems, test for adoption of btrfs in Cardinal

In-place Btrfs → Ext4 filesystem converter. No spare disk required — works directly on block devices or image files, with crash-recovery journal, rollback support, and memory-aware scaling for resource-constrained hardware.

A few useful BTRFS utilities

KISS tools for make snapshots in a Btrfs filesystem

Creating a NOCOW copy while trying to be smart to save disk space during the process.

btrfs-progs fork with Synology DSM custom root flags support — enables btrfs restore for Synology RAID data recovery

CLI to share some the data of one file with another file, zero-copy via reflinks