FlatPress vs Serendipity
A side-by-side comparison of two self-hosted blogging platforms options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | FlatPress | Serendipity |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 73 · Good | 76 · Good |
| Category | Blogging Platforms | Blogging Platforms |
| License | GPL-2.0 | BSD-3-Clause |
| Language | PHP | PHP |
| Setup difficulty | Easy | Easy |
| Min. RAM | 128 MB | 256 MB |
| Deployment | bare-metal, source | docker, bare-metal, source |
| GitHub stars | ★ 215 | ★ 227 |
| First released | 2005 | 2003 |
| Replaces | WordPress, Blogger | WordPress, Blogger |
What are FlatPress and Serendipity?
FlatPress
FlatPress is an open-source blogging engine that requires no database, storing all content in flat files. It is designed to be simple, fast, and easy to deploy on minimal hosting.
- No database required
- Flat-file storage
- Plugin and theme support
- Lightweight
Serendipity
Serendipity is an open-source PHP and MySQL-powered weblog application that emphasizes ease of use and effective spam protection. It supports plugins, themes, and multiple blogs.
- Strong built-in spam protection
- Plugin and theme system
- Multiple blog support
- Easy upgrades
FlatPress vs Serendipity: key differences
Both projects are written in PHP. Licensing differs — GPL-2.0 for FlatPress versus BSD-3-Clause for Serendipity. FlatPress is the lighter option, starting around 128 MB of RAM against 256 MB for Serendipity. Serendipity is the more established project (first released 2003), while FlatPress arrived in 2005. Serendipity lists first-class Docker deployment; FlatPress does not.
Why pick each one
Choose FlatPress if…
- Trivial to install and back up
- Runs on minimal hosting
Watch out for
- Small community
- Basic feature set
Choose Serendipity if…
- Excellent spam handling
- Stable long-running project
Watch out for
- Small modern community
- Dated default themes
Frequently asked questions
Is FlatPress or Serendipity better?
Neither is universally better. Serendipity has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are FlatPress and Serendipity free and open-source?
Yes. FlatPress is licensed under GPL-2.0 and Serendipity under BSD-3-Clause. Both can be self-hosted at no software cost.
Can I run FlatPress and Serendipity with Docker?
FlatPress: check the project docs for container support. Serendipity: yes.
Which is lighter on resources, FlatPress or Serendipity?
FlatPress has the smaller minimum footprint at 128 MB of RAM, compared to about 256 MB for Serendipity. Real-world usage depends on library size, user count, and enabled features.