Hammer++ : Home
ficool2.github.io
Hammer++ is a free, extensive modification of Valve's Hammer editor for the Source engine, with the premise of being a more stable, up-to-date version, with many bugfixes and several improvements present in modern level editors.
Installation -
Have CS:GO and the SDK, run them.
Download Hammer++ from the Github.
Extract Files from Zip folder to:
Program Files x86>Steam>steamapps>Common>Gounter-Strike: Global Offensive>bin
All set! Here are some of the latest videos on Hammer++ -