Awesome

yadm - Yet Another Dotfiles Manager

yadm is a tool for managing dotfiles.

Based on Git, with full range of Git's features
Supports system-specific alternative files or templated files
Encryption of private data using GnuPG, OpenSSL, transcrypt, or git-crypt
Customizable initialization (bootstrapping)
Customizable hooks for before and after any operation

Complete features, usage, examples and installation instructions can be found on the yadm.io website.

A very quick tour

# Initialize a new repository
yadm init

# Clone an existing repository
yadm clone <url>

# Add files/changes
yadm add <important file>
yadm commit

# Encrypt your ssh key
echo '.ssh/id_rsa' > ~/.config/yadm/encrypt
yadm encrypt

# Later, decrypt your ssh key
yadm decrypt

# Create different files for Linux vs MacOS
yadm add path/file.cfg##os.Linux
yadm add path/file.cfg##os.Darwin

If you enjoy using yadm, consider adding a star to the repository on GitHub. The star count helps others discover yadm.