Social (OAuth1\OAuth2\OpenID\OpenIDConnect) sign with PHP 
Steam Account Manager / Switcher
OpenID-Login through Steam for your website
Steam Account Checker
A simple PHP Steam login and User Detail package
A wiki on how to skin steam
A chrome web extension to ease logging into multiple steam accounts.
Steam Login for Laravel/Lumen 5.5+ / 6.x+ / 7.x+ / 8.x+
Steam Profile Switching application allows the user to preset profiles (Steam Name, Bio, Avatar) these profiles can then be switched to instead of requiring the manual change of each field in Steam.
Steam Login PHP
Streamline your gaming setup by automatically creating fully configured Steam accounts in just a few seconds. Save time and effortlessly manage multiple profiles with an intuitive and fast automated process.
steam-login with info account
Full implementation of login with Steam
Nodejs server for generating steam codes
A Steam OpenID authentication module for XenForo 1.x.x
Allows you to Login to steam through python with a QR Code and obtain access Tokens.
Log in to an NFA Steam account with its token: paste it and Steam opens already signed in. Free and open source, for Windows. Made for NFAStore customers.
Python package for Steam authentication, sessions, Web API access, and Steam Community automation.
Easily switch between Steam accounts. No password or Steam Guard code needed.
To associate your repository with the steam-login topic, visit your repo's landing page and select "manage topics."