SMF vs YAF.NET
A side-by-side comparison of two self-hosted forums & community options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | SMF | YAF.NET |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 78 · Good | 80 · Excellent |
| Category | Forums & Community | Forums & Community |
| License | BSD-3-Clause | Apache-2.0 |
| Language | PHP | C# |
| Setup difficulty | Easy | Medium |
| Min. RAM | 256 MB | 512 MB |
| Deployment | docker, bare-metal, source | docker, bare-metal, source |
| GitHub stars | ★ 749 | ★ 548 |
| First released | 2004 | 2006 |
| Replaces | vBulletin, phpBB | phpBB, vBulletin |
What are SMF and YAF.NET?
SMF
SMF, or Simple Machines Forum, is a free, professional-grade forum package that lets you run an online community. It is known for stability, a strong permission system, and broad customization.
- Granular permission system
- Mods and themes support
- Strong moderation features
- Multilingual support
YAF.NET
YAF.NET, or Yet Another Forum.NET, is an open-source discussion forum package for ASP.NET. It offers a full forum experience for the Microsoft web stack.
- Native ASP.NET forum
- Theming and module support
- Granular permission system
- Moderation toolset
SMF vs YAF.NET: key differences
SMF is written in PHP, while YAF.NET is built with C#. Licensing differs — BSD-3-Clause for SMF versus Apache-2.0 for YAF.NET. SMF is the lighter option, starting around 256 MB of RAM against 512 MB for YAF.NET. SMF is the more established project (first released 2004), while YAF.NET arrived in 2006.
Why pick each one
Choose SMF if…
- Reliable and well established
- No licensing fees
Watch out for
- Dated default appearance
- Slower modern development
Choose YAF.NET if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Written in C#
- Lightweight — runs in 512 MB RAM
Watch out for
- .NET hosting required
- Smaller community than PHP forums
Frequently asked questions
Is SMF or YAF.NET better?
SMF is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider YAF.NET if its specific feature set fits your needs better.
Are SMF and YAF.NET free and open-source?
Yes. SMF is licensed under BSD-3-Clause and YAF.NET under Apache-2.0. Both can be self-hosted at no software cost.
Can I run SMF and YAF.NET with Docker?
SMF: yes. YAF.NET: yes.
Which is lighter on resources, SMF or YAF.NET?
SMF has the smaller minimum footprint at 256 MB of RAM, compared to about 512 MB for YAF.NET. Real-world usage depends on library size, user count, and enabled features.