Sonar v2.1.47

Sonar is a lightweight and effective anti-bot plugin for Velocity, BungeeCord, and Bukkit.
This update introduces support for Minecraft version 1.21.9.

Full Changelog
  • Use radial gradient for CAPTCHA text
  • 1.21.9 Support #520
  • Include font license for kingthings fonts
Massive thanks to the sponsors of Sonar who help keep this project running: Hydoxl

Notice about Sonar 3.0
If you are interested in Sonar 3.0, please join the Discord server.
This update fixes several issues with 1.21.7-1.21.8 clients. Additionally, the maximum number of packets during the verification is now configurable.

Full Changelog
  • Disable expected position but got client tick end check
  • Update Georgian translations #514
  • Update Dutch translations
  • Make max packet count configurable
Massive thanks to the sponsors of Sonar who help keep this project running: Hydoxl
This update implements proper MiniMessage support for 1.21.5+. Additionally, client ticking checks have been improved (thanks to FallenCrystal).

Full Changelog
  • Improve client tick check for 1.21.2+ clients #496
  • Make font loading error slightly more descriptive
  • Bump adventure from 4.21.0 to 4.24.0
  • Bump adventure-platform from 4.4.0 to 4.4.1
Massive thanks to the sponsors of Sonar who help keep this project running: Hydoxl
This update fixes an issue where the online players per IP check would not work at all. Additionally, a few dependencies have been updated and 1.21.8 is now fully supported on Bukkit.

Full Changelog
  • Fix max online per IP check
  • 1.21.8 Support (server-only)
  • Update velocity-proxy dependency
  • Bump net.kyori.indra.git from 3.1.3 to 3.2.0
  • Bump com.diffplug.spotless from 7.1.0 to 7.2.1
Massive thanks to the sponsors of Sonar who help keep this project running: Hydoxl
This update fixes a false positive caused by a Minecraft bug. Additionally, admins can now show the number of CAPTCHA attempts left in the verification.captcha.incorrect message using the placeholder <attempts-left>.

Full Changelog
  • Remove locale regex check due to a Minecraft bug
  • Add missing translations for the new feature
  • Make incorrect captcha message contain attempts left
  • Allow "fell through" check to be skipped by a CAPTCHA
Massive thanks to the sponsors of Sonar who help keep this project running: Hydoxl
This update adds support for Minecraft 1.21.7 and missing 1.21.6 implementations on Bukkit servers.

Massive thanks to the sponsors of Sonar who help keep this project running: Hydoxl
This update adds initial support for Minecraft 1.21.6 (thanks to FallenCrystal). Additionally, the system and process CPU usage can now be displayed in the action bar and the "duplicate client brand" check can now be disabled. Several dependencies have also been updated.

Full Changelog
  • 1.21.6 Support #484
  • Allow action bar to show CPU usage
  • Don't allocate DEFAULT removal listener
  • Fix possible exception with short brands
  • Fix client brand check debug
  • Allow disabling of the duplicate brand check
  • Simplify client brand handling
  • Bump netty and caffeine #482 #483
Massive thanks to the sponsors of Sonar who help keep this project running: Hydoxl
This update fixes a false positive with older cosmetics mods and clients. Additionally, Geyser (Bedrock) players are now skipped by default, and an old check has been removed as it was deemed unnecessary.
Official support for Geyser will no longer be provided, but you can still use the feature if you like.

Massive thanks to the sponsors of Sonar who help keep this project running: Hydoxl
EULA: Free EULA
18,742 Views
460 Downloads
Mar 30, 2022 Published
May 9, 2026 Updated
5.00 star(s)
Average rating (10)
4.6 MB File size
Open source
  1. Yes
DRM-free
  1. Yes
Unobfuscated
  1. Yes
Type
  1. Protection
  1. Patch
Supported software
  1. Bukkit
  1. Spigot
  1. Paper
  1. Bungee
  1. Folia
  1. Velocity
  1. Purpur
Supported versions
  1. 26.1
  1. 1.21.11
  1. 1.21.8
  1. 1.21.5
  1. 1.21.4
  1. 1.21.2
  1. 1.21
  1. 1.20
  1. 1.19
  1. 1.18
  1. 1.17
  1. 1.16
  1. 1.15
  1. 1.14
  1. 1.13
  1. 1.12
  1. 1.11
  1. 1.10
  1. 1.9
  1. 1.8
  1. 1.7
Supported languages
  1. English
  1. Spanish
  1. Russian
  1. German
  1. French
  1. Portugese
  1. Polish
  1. Turkish
  1. Chinese
  1. Indonesian
  1. Italian
  1. Dutch
  1. Czech
Includes DRM
No
Source access (legacy)
Open source
Crediting original
https://github.com/jonesdevelopment/sonar/contributors
Creator
Owner
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18,742 Views
460 Downloads
Mar 30, 2022 Published
May 9, 2026 Updated
5.00 star(s)
Average rating (10)
4.6 MB File size
Open source
  1. Yes
DRM-free
  1. Yes
Unobfuscated
  1. Yes
Type
  1. Protection
  1. Patch
Supported software
  1. Bukkit
  1. Spigot
  1. Paper
  1. Bungee
  1. Folia
  1. Velocity
  1. Purpur
Supported versions
  1. 26.1
  1. 1.21.11
  1. 1.21.8
  1. 1.21.5
  1. 1.21.4
  1. 1.21.2
  1. 1.21
  1. 1.20
  1. 1.19
  1. 1.18
  1. 1.17
  1. 1.16
  1. 1.15
  1. 1.14
  1. 1.13
  1. 1.12
  1. 1.11
  1. 1.10
  1. 1.9
  1. 1.8
  1. 1.7
Supported languages
  1. English
  1. Spanish
  1. Russian
  1. German
  1. French
  1. Portugese
  1. Polish
  1. Turkish
  1. Chinese
  1. Indonesian
  1. Italian
  1. Dutch
  1. Czech
Includes DRM
No
Source access (legacy)
Open source
Crediting original
https://github.com/jonesdevelopment/sonar/contributors
Creator
Owner
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