Spacebar vs Synapse
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?
Spacebar
Self-hostable, open-source Discord-compatible chat backend
VS
Synapse
Reference homeserver for the Matrix network
| Feature | Spacebar | Synapse |
|---|---|---|
| Category | Chat & Communication | Matrix & XMPP |
| License | AGPL-3.0 | AGPL-3.0 |
| Language | TypeScript | Python |
| Setup difficulty | Hard | Hard |
| Min. RAM | 1,024 MB | 1,024 MB |
| Deployment | docker, source | docker, bare-metal |
| GitHub stars | ★ 2,189 | ★ 4,503 |
| First released | 2021 | 2014 |
| Replaces | Discord | Slack, Discord, WhatsApp |
Why pick each one
Choose Spacebar if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Active community (2.2k GitHub stars)
- Written in TypeScript
Frequently asked questions
Is Spacebar or Synapse better?
Neither is universally better. Synapse has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Spacebar and Synapse free and open-source?
Yes. Spacebar is licensed under AGPL-3.0 and Synapse under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Spacebar and Synapse with Docker?
Spacebar: yes. Synapse: yes.