Atheos vs Eclipse Theia
A side-by-side comparison of two self-hosted ides & code editors options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Atheos
Web-based IDE framework with a small footprint and minimal
VS
Eclipse Theia
Cloud and desktop IDE platform
| Feature | Atheos | Eclipse Theia |
|---|---|---|
| Category | IDEs & Code Editors | IDEs & Code Editors |
| License | MIT | EPL-2.0 |
| Language | JavaScript | TypeScript |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | docker | docker, bare-metal |
| GitHub stars | ★ 675 | ★ 21,622 |
| First released | 2025 | 2017 |
| Replaces | — | VS Code, GitHub Codespaces |
Why pick each one
Choose Atheos if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Written in JavaScript
- Lightweight — runs in 512 MB RAM
Choose Eclipse Theia if…
- Released under the EPL-2.0 license
- First-class Docker support for quick deployment
- Mature project with 21.6k GitHub stars
- Written in TypeScript
Frequently asked questions
Is Atheos or Eclipse Theia better?
Neither is universally better. Eclipse Theia has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Atheos and Eclipse Theia free and open-source?
Yes. Atheos is licensed under MIT and Eclipse Theia under EPL-2.0. Both can be self-hosted at no software cost.
Can I run Atheos and Eclipse Theia with Docker?
Atheos: yes. Eclipse Theia: yes.