NeoMutt vs Open Web Calendar
A side-by-side comparison of two self-hosted apps from related categories — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
NeoMutt
Feature-rich terminal email client
VS
Open Web Calendar
Embed a web calendar into your own website
| Feature | NeoMutt | Open Web Calendar |
|---|---|---|
| Category | Mail Servers | File Sync & Storage |
| License | GPL-2.0 | GPL-2.0 |
| Language | C | Python |
| Setup difficulty | Medium | Easy |
| Min. RAM | 64 MB | 50 MB |
| Deployment | binary, source | bare-metal |
| GitHub stars | ★ 3,799 | ★ 330 |
| First released | 2016 | 2024 |
| Replaces | Microsoft Outlook | Google Agenda, Microsoft Outlook |
Why pick each one
Choose NeoMutt if…
- Released under the GPL-2.0 license
- Active community (3.8k GitHub stars)
- Written in C
- Tiny footprint — runs in 64 MB RAM
Choose Open Web Calendar if…
- Released under the GPL-2.0 license
- Easy to set up — beginner-friendly
- Written in Python
- Tiny footprint — runs in 50 MB RAM
Frequently asked questions
Is NeoMutt or Open Web Calendar better?
Neither is universally better. NeoMutt has the larger community, while Open Web Calendar is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are NeoMutt and Open Web Calendar free and open-source?
Yes. NeoMutt is licensed under GPL-2.0 and Open Web Calendar under GPL-2.0. Both can be self-hosted at no software cost.
Can I run NeoMutt and Open Web Calendar with Docker?
NeoMutt: check the project docs for container support. Open Web Calendar: check the project docs for container support.