While most Steam Workshop items can be manually installed, you won't have the "one-click" subscription ease that Steam users enjoy. Final Verdict
Search for "Strogino CS Source No Steam" (using DuckDuckGo or Yandex often yields better results than Google). Look for version numbers like "v34" (the most stable no-steam build for CS:S) or "v92" for newer content. strogino cs portal gmod no steam user
Do run hl2.exe directly. The launcher applies emulation fixes. While most Steam Workshop items can be manually