Steam

• Account Overview
  • Spending History
  • Register a new key
• Account related data (GDPR compliant)
  • Total Money Spent

• steamguard-cli – linux utility for generating 2FA codes for Steam and managing Steam trade confirmations. You can also get 2FA codes for Aegis with that.
• SteamTinkerLaunch – Linux wrapper tool for use with the Steam client for custom launch options and 3rd party programs
• ProtonUp-Qt – update Proton (Windows compatibility layer based on WINE on Linux)

https://steamid.xyz/

Example:

 "C:\\Program Files\\Steam\\Steam.exe" -login username password 

Recommended: Method 2

1. log in
2. in menu: Steam → Backup and restore games…
3. Backup currently installed programs
4. select the games
5. select the target folder (may be on external HDD or network drive, but not network folder)
6. choose a file name, hit the down arrow besides "file size"
7. select "custom…" and enter 4000 (for FAT32 targets) or 16000000 (NTFS/Linux file systems)
8. click "next"
9. on target: back to step 1, select Restore a previous backup in step 3 and follow the wizard

1. stop all running downloads
2. log out of steam
3. open folder C:\Program Files (x86)\Steam\steamapps\
4. copy the folder common and all appmanifest_… files onto external HDD or network drive
5. on target, copy all files in new folder on desktop
6. move (!) the files to C:\Program Files (x86)\Steam\steamapps\

Many university and school networks as well as some proxy servers, may block ports required by steam. Although it is not possible to change the steam port configuration, in some cases starting steam in TCP mode may allow you to bypass firewalls.