Prevent forum spam and bot signups with StopForumSpam, an open source tool that checks user signups against a database of known spammers.
StopForumSpam is a free and open source spam blocking service aimed at helping forum and website owners reduce spam signups and automated bots. It maintains a frequently updated database of known spammers, harvesting data from over 3 million forums and websites that use the service.
Website owners can use the StopForumSpam API to cross check user email addresses, IP addresses, and usernames against the database in real-time as visitors sign up. Any matches indicate the visitor is likely a spammer and sign up can then be denied. The database includes data on spam accounts, compromised accounts, malware URLs, and known spambots.
In addition to the API, StopForumSpam also provides other free tools like a Firefox and Chrome extension to check spam in forums, as well as WordPress and phpBB plugins. An optional paid service is available for private database access. The team behind StopForumSpam is non-commercial and funded by donations.
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