Self-hosted projects tagged “Anti Spam”

Production-ready mail server stack in a Docker container with SMTP, IMAP/POP3, LDAP auth, anti-spam/AV, DKIM/DMARC, and optional OAuth2 support.

MITActively maintained

Alternative to:

Gmail+16

SimpleLogin is an open-source email alias service that lets you create aliases to protect your real inbox, forward mail, and reply or send from aliases using custom domains.

AGPL-3.0Actively maintained

Alternative to:

SimpleLogin+3

Automated open-source mail server installer bundling Postfix, Dovecot, webmail, anti-spam/antivirus and LDAP/SQL backends for mainstream Linux/BSD.

GPL-3.0Actively maintained

Alternative to:

Microsoft Exchange Online+16

InspIRCd is a modular, lightweight Internet Relay Chat (IRC) server with a flexible module system, designed for stable and performant IRC network deployments.

Actively maintained

Alternative to:

IRCCloud+3

UnrealIRCd is an open-source, modular IRC server implementing IRCv3, TLS, anti-spam/flood protections, GeoIP and admin APIs for running public or private IRC networks.

Accessible, rule-based spam protection for web forms that inspects form fields, stores minimal data encrypted, and auto-deletes entries after 14 days.

MITActively maintained

Alternative to:

hCaptcha+4

Serendipity is a PHP-powered weblog engine offering a lightweight blog platform with plugins, themes, media library, comments, and multi-database support.

BSD-3-ClauseActively maintained

Alternative to:

WordPress.com+10

File-based PHP blogging engine that requires no database. Provides Smarty-powered themes, a plugin/widget system, comments with spam protection, and easy backups.

GPL-2.0Actively maintained

Alternative to:

WordPress.com+10

Privacy-first, GDPR-focused self-hosted Proof-of-Work CAPTCHA for forms and APIs with an adaptive lightweight widget and Postgres/ClickHouse backend.

Actively maintained

Alternative to:

Private Captcha+4