What are some alternatives?
When comparing Dotabuff and Idle Master, you can also consider the following products
Tracker.GG - Track user stats from CSGO, Destiny 2, COD
GameHub - Unified library for all your games.
War Thunder - War Thunder is a Free-to-play, WWII, Massively Multiplayer Online, Military-themed, Strategy, and Combat Simulation developed and published by Gaijin Entertainment.
Steam Database - This tool was made to give better insight into the applications that Steam has in its absolutely huge database.
Cry of Fear - Cry of Fear is an Action-Adventure, First-person Shooter, Horror, Survival, Single and Multiplayer video game developed by Team Psykskallar and published by James Marchant.
CSGO Server Launcher - A simple bash script to create and launch your Counter-Strike Global Offensive Dedicated Server