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
Full implementation of login with Steam
steam-login with info account
Nodejs server for generating steam codes
A Steam OpenID authentication module for XenForo 1.x.x
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.
Allows you to Login to steam through python with a QR Code and obtain access Tokens.
Monitor login attempts, session tokens, trade holds — one Steam security dashboard
No more manual Steam login checks — just run and go
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