Highly customizable. It featured advanced "Rotations" that bypassed many older Anti-Cheats (like early versions of Watchdog or Spartan).
B13 is an older version. It was designed for Minecraft 1.8.8 and is largely obsolete compared to modern clients. Flux b13.zip
Known for having very stable "LongJump" and "Speed" modules for Hypixel and Mineplex back in 2016-2018. Highly customizable
To help you find the best tool for your needs, could you tell me: What are you playing on? Flux b13.zip
If you are looking for a Minecraft client today, it is safer and more effective to use modern, actively maintained options: (Best for modern Anarchy/Utility). LiquidBounce (Free, open-source, and highly customizable). Aristois (User-friendly and works on almost all versions).