Glowy

List of features:

• Reaction roles
• Customizable prefix
• Low latency
• Moderation
• Tags
• Warning system
• Welcomer
• Information
• Modlogs
• Levelling

Glowy is also actively developed to make sure that all the best features are in place!

Mutes:

Mutes can be easily revoked via g.unmute

Tempmutes can be multiple weeks long, allowing for plenty of options

Warnings:

You can easily revoke a warning

Warnings are simple to give

And the best part is, it's all free!