AceBoard.net - Free and fully customizable message boards. Ad-supported.

Aimoo Forums - Hosted discussion boards which include a WYSIWYG editor and allows customization.

AtomicBoards - Offers free and paid customizable message boards. Free boards are ad-supported.

BbBoard - Offers a feature-packed message board system.

BoardHost - Remotely hosted discussion boards. Free trial available.

BoardNation - Offer SMF, phpBB, Invision Power Board, and vBulletin. Free and paid services available.

BoardServer - Provides completely customizable message boards. Commercial.

Boards2Go - Offers a free message board. This service is popup-ad supported.

Buildaforum.com - Provides commercial forum hosting. Ad-free.

Bulletin Boards - Offers commercial bulletin boards.

ChatArea - Offers unlimited free remotely hosted forums. Ad-supported.

Community Builder - Offers discussion boards and other services that integrate seamlessly into web sites.

CreateForum.com - Provides free discussion board hosting. Ad-supported.

CreateMyBB - Provides free MyBB forum hosting. Ad-supported.

CSD Clubs - Clubs service with multiple themes and layouts configurable per club. Ad-supported.

Danethical.com - Provides forum hosting services. Ad-supported.

Delphi Forums - Offers free and paid forum hosting. The paid offer is ad-free.

Discussforum.net - Provides commercial discussion boards which are optimized for web speed.

DKAT Internet Services - Paid discussion board hosting services for corporations and large organizations. Also offers password protected forums.

Eboards4all - Offers free ad-supported discussion boards. Features include customizable layout, smilies and moderator options.

Edorel.com - Offers free remotely hosted message boards. Ad-free.

Exco Board - Offers a simple to use free message board with advanced features. Paid ad-free option available.

EzBoard - Offers free and paid discussion board hosting. The free version is ad-supported.

ForumCo - Multithreaded, unlimited categories and forums, moderators. Free.

Forumer.com - Offers Invision and phpBB board hosting services. Ad-supported.

ForumExperts - XML based hosted forums for corporate and enthusiast websites. Logical threaded layout, markup features include images and formatting. Implemented through customizable control panel.

ForumHoster - Provides free and paid discussion board hosting. Ad-supported.

Forumlaunch.com - Provides commercial forum hosting services.

Free Boards - Free remotely hosted message boards. Features customizable layout options. Ad-supported.

Free Power Boards - Offer free customizable phpBB hosting.

Free YaBB Forum Hosting - Ad supported YaBB message board hosting. Offers ad removal as paid option.

Hondos Bulletin Board - Provides remotely hosted discussion boards which support phpBB themes. Paid and ad-supported versions available.

Hostboard - Offers paid Ultimate Bulletin Board discussion boards.

Hostsmf.com - Provides free SMF based forum hosting. Ad-supported.

Le Forum - Offers a highly configurable discussion board hosting service. Ad-supported.

Lithium - Provides on-demand, hosted forums, chats, and other social networking tools for enterprise to build online communities.

LiveBoards - Commercial discussion board provider. Features include content scanning, private areas and configurable look.

Mintro - Offers remotely hosted message board hosting.

Moncom.net - Free open discussion forums which can be used as a regular discussion forum or knowledge base.

Multi-Forums.net - Offers free Invision Board and phpBB hosting.

Network54 - Board hosting service which features custom headers, footers, fonts and also password protected areas.

Novogate.com - Commercial provider which offers two different types of discussion boards.

OLI YaBB Forum Hosting - Unlimited sub-boards with web-based administrative controls.

PickAForum.com - Provides free phpBB and Invision Board hosting. Ad-supported.

PoppyDog Web Tools - Advanced website tools for building a variety of forums and message boards with optional marketing, advertising, and community features built in. Free.

Quick Topic - Free web bulletin board which supports posting by email. Paid pro version available.

Raidersoft - Simple message board solution for small communities. Paid version available.

Ravelly.com - Offers a free customizable discussion board. Ad-supported.

RelyNet - Remotely hosted ZeroForum and Unite discussion board engines. Commercial.

Runboard - Free customizable message boards. Features include sub domains, security management and global accounts.

Server Room - Offers commercial phpBB, FUDForum, and XMBforum hosting.

SiteForums - Forums are easy to manage, flexible, and can be graphically customized.

Smfforfree.com - Offers free SMF based forum hosting. Ad-supported.

Stereodreamscene - Paid discussion board hosting service powered by Snitz Forums.

Sudden Launch - Free customizable message boards. Includes sub domain, unlimited boards, posts and threads. Ad-supported.

Timur.com - Provides a free, customizable forum hosting service.

VivBoard - Provides free remotely hosted discussion boards. Features large posts and pictures.

VoyForums - Free hosted discussion board service. Different layouts to choose from. Ad-supported.