Top 20 antispam open source projects

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.

Antispam extension for MediaWiki.

API to have CleanTalk anti-spam on Ruby

A Hugo theme component to cloak email adresses

暴恐违禁 文本色情 政治敏感 恶意推广 低俗辱骂

Anti-spam plugin for Joomla 2.x

sepanta Bot | ربات سپنتا

Telegram Bot that figths against Spammers who join groups to publish their annoying and unwanted info. The Bot will watch for all new users that join the group and don't let them to publish messages that contains URLs until they have been in the group long as an specific time, and they have written an enough number of messages (configurable).

A Discord Bot that allows you to protect your Discord server with captcha, anti profanity, anti nudity image, anti spam, account age required, logs...

milter manager is a free software to protect you from spam mails and virus mails effectively with milter.

Caldera Forms Anti Spam WordPress plugin. This adds Google's reCAPTCHA field to your Caldera Form.

lists to spam a lot of rubbish ... hand-curated to fight spammers harassing poor italian (domain.it) mailboxes #spamrevenge

frist antispam and group moderator TeleGram bot with fast speed, high power and low space

Spam protection tools for django applications.

Mail Toaster 6

Anti Spam/NSFW Telegram Bot Written In Python With Pyrogram.

A PHP API for antispam service cleantalk.org. Invisible protection from spam, no captches, no puzzles, no animals and no math.

1C Bitrix anti-spam mod.

The ultimate chat solution. Prevent spam, ads, swears and even bots on your server. Replaced by ChatControl Red: https://mineacademy.org/chatcontrol-red

Fight against PR spammers