Simple Machines Forum

Spec sheet

Product

SMF is free and open-source community forum software for setting up an online community.Read 9 Oct 2026 · github.com

Security

SMF 2.1 upgrades password hashing to bcrypt and uses unique form tokens to help prevent CSRF attacks.Read 9 Oct 2026 · wiki.simplemachines.org

Support

The support site directs users to FAQs, community forum search, community questions, and the online manual.Read 9 Oct 2026 · support.simplemachines.org

Community features

SMF 2.1 includes likes, mentions, and alerts for new likes, mentions, and private messages.Read 9 Oct 2026 · wiki.simplemachines.org

Customization

SMF 2.1 includes hooks and management controls to enable or disable integration hooks.Read 9 Oct 2026 · wiki.simplemachines.org

Databases

SMF 2.1 includes PostgreSQL support and lists IPv6 support among its general improvements.Read 9 Oct 2026 · wiki.simplemachines.org

Downloads

The download page lists SMF 2.1.4 packages for full installs, large upgrades, and patches.Read 9 Oct 2026 · download.simplemachines.org

Editor

SMF 2.1 adds the SCEditor WYSIWYG editor.Read 9 Oct 2026 · wiki.simplemachines.org

Mobile support

The Curve2 theme is responsive and designed to work on computers, phones, and tablets.Read 9 Oct 2026 · wiki.simplemachines.org

Optional assistance

The support site says users who donate at least $50 USD can become Charter Members and receive optional installation assistance from the SMF team.Read 9 Oct 2026 · support.simplemachines.org

Posting

SMF 2.1 supports HTML5 attachment uploading, including drag and drop, and saved drafts.Read 9 Oct 2026 · wiki.simplemachines.org

Two-factor login

SMF 2.1 supports Google Authenticator for two-factor logins.Read 9 Oct 2026 · wiki.simplemachines.org

Plans and prices

Every Simple Machines Forum plan and price →

Where Specifiction places it

• Forum Software#14 of 207.2