Antispam
Markup: clickable email adresses - but with antispam
- serendipity_event_email_bot_obfuscator
- version 1.03.1 (GPL, Last Updated 2021-07-13)
- Stephan Manske, Ian
- Serendipity >= 0.8
Makes email addresses clickabe, but obfuscates them to block spam harvester bots
Recaptcha
- serendipity_event_recaptcha
- version 0.20.4 (GPL, Last Updated 2021-07-13)
- Christian Brabandt (based on work of Garvin Hicking, Sebastian Nohn)
- Serendipity >= 1.0
Enabling a recaptcha for commenting articles (You need to apply for a key)
Spam Protector (RBL)
- serendipity_event_spamblock_rbl
- version 1.5.2 (GPL, Last Updated 2021-07-13)
- Sebastian Nohn
- Serendipity >= 1.2
Will reject comments made from hosts which are listed in RBLs. Pay attention that this may affect proxy-users or dial-up users.
Spam Protector (SURBL)
- serendipity_event_spamblock_surbl
- version 1.2.1 (GPL, Last Updated 2021-07-13)
- Sebastian Nohn
- Serendipity >= 0.8
Reject comments that contain blacklisted URLs
Spamblock (Bayes)
- serendipity_event_spamblock_bayes
- version 1.1.7 (GPL, Last Updated 2023-09-06)
- kleinerChemiker, Malte Paskuda, based upon b8 by Tobias Leupold
- Serendipity >= 2.1
Detects Spam via an algorithmus which learns.
Spamblock Bee (Honeypot, Hidden Captcha)
- serendipity_event_spamblock_bee
- version 1.3.3 (GPL, Last Updated 2021-07-13)
- Grischa Brockhaus, Janek Bevendorff
- Serendipity >= 0.8
Implements simple comment antispam mechanisms, that are easy to configure but very effective.