Best Self-hosted Moderation & Anti-Spam Tools tools in 2026
6 self-hosted open source alternatives in this category
See also:
Comments & Community WidgetsCommunity Events & Conference ManagementFederated Social NetworksFeedback, Voting & RoadmapsForums & Discussion BoardsQ&A / Knowledge Communities6 services found
Coral (Talk)
Open-source commenting platform for publishers with moderation tools
Coral (Talk) is an open-source commenting and moderation platform for publishers, offering real-time conversations, GraphQL APIs, moderation workflows, and extensible plu...
MyBB
Free, open-source forum software for managing online communities
MyBB is a PHP-based, open-source forum platform with plugins, themes, moderation tools, private messaging and multi-database support.
SourceBans++
Admin, ban and communication management for Source engine servers
Web-based global administration and ban management system for Valve Source engine games, with a PHP web panel, SourceMod plugins, and MySQL/MariaDB backend.
Sympa
Open-source mailing list management software
Open-source mailing list manager for automating subscriptions, moderation, archives and message distribution with web, CLI and SOAP interfaces for large lists.
mosparo
Rule-based form spam protection without CAPTCHAs
Accessible, rule-based spam protection for web forms that inspects form fields, stores minimal data encrypted, and auto-deletes entries after 14 days.
Private Captcha
Privacy-first, self-hosted proof-of-work CAPTCHA service
Privacy-first, GDPR-focused self-hosted Proof-of-Work CAPTCHA for forms and APIs with an adaptive lightweight widget and Postgres/ClickHouse backend.