Features

How does Mollom compare with other services like Akismet or Defensio?

Due to its convenience, accuracy, performance, accessibility, and openness, we think Mollom is the best solution available for preventing comment spam on your site.

To help compare and contrast Mollom with other similar services, we've developed a table that focuses on a few key areas.

  Mollom Akismet Defensio
Company Mollom Automattic Websense Inc.
When in doubt, use CAPTCHA? Yes No No
Protect user registrations Yes, on some platforms No No
Supported platforms Drupal, Joomla!, WordPress, and others WordPress and others WordPress and others
Multiple language support Yes Yes Yes
Commercial partners Yes No Yes
Developer API Yes Yes Yes
CAPTCHA support Yes No No
Reputation tracking Yes Unknown Yes
Highly-available back-end network Yes Unknown Yes
Ability to retain spam for manual moderation Yes2 Yes Unknown
Protection for new user registrations, lost password requests, etc. Yes2 Unknown Unknown
Protection for custom and site-wide forms Yes2 Unknown Unknown
Hidden honeypots to trap spam bots Yes2 Unknown Unknown
Support and feedback Yes Yes Yes
Security protocol HMAC None None
Free for personal use Yes1 Yes Yes
Free for commercial use Yes1 No Yes

Have additions or corrections you'd like to suggest for this table? If so, please contact us.

1Some limitations on post volume apply. See Mollom's pricing page for more information.
2May only be supported on some of Mollom's many CMS platforms, due to differences in the underlying CMS.

Does Mollom brand its CAPTCHAs?

It depends on the type of your Mollom subscription. CAPTCHAs generated on sites with Mollom Free subscriptions automatically include a small Mollom icon or logo. This icon is not displayed on sites using Mollom Plus or Mollom Premium. If the presence of the Mollom icon disrupts the appearance of your site, purchasing or upgrading to a Mollom Plus/Premium subscription provides your best solution for removing the icon.

Can I resell Mollom Plus to my own clients?

Yes, we want to work with web developers and other vendors interested in reselling Mollom Plus subscriptions. Our profit-sharing program, available to partners with an approved reseller agreement, allows us to provide you with a financial incentive to resell Mollom Plus subscriptions. If you are interested in becoming a Mollom partner, use our contact page to request more information.

Can I integrate Mollom Plus into a product of my own?

Absolutely. Although we don't support integration with our Mollom Free service, we encourage the integration of Mollom Plus into other products and provide an open API. Remember, though, that each individual site must identify itself to Mollom servers using its own Mollom access key. Fortunately, we provide a set of advanced web-based APIs that help manage access key creation. For more information on product integration and documentation for our key management API, use our contact page to send us more information about your proposed integration project.

One feature of Mollom Plus is "high-availability". Can you explain what you mean by "high-availability"?

The Mollom infrastructure was built from the ground up to be scalable and robust. Mollom has servers in multiple independent data centers around the world, providing a high degree of redundancy. Mollom provides a "client-side load balancing mechanism": when one of the Mollom servers is down or overloaded, your site can move on to the next Mollom server. This mechanism allows for high availability, as it is unlikely that different servers in different data centers around the globe would simultaneously be unavailable. Mollom servers are permanently monitored, and Mollom has technicians on call that can respond to any emergency 24/7 should any issue arise.

As part of the communication between your site and a Mollom server, your site receives a list of available Mollom servers it can use for future transactions. For clients with Mollom Plus or Premium subscriptions, we return a list of several available servers. Mollom users with a free Mollom subscription do not necessarily get access to multiple Mollom servers.

Mollom provides paying customers with a Standard Service Level Agreement that sets forth the service delivery criteria that Mollom endeavors to achieve with respect to the Mollom servers. Mollom users with a free Mollom subscription do not receive any service level agreements.