PairDrop vs Updog
A side-by-side comparison of two self-hosted file sync & storage options — licensing, setup difficulty, resource needs, and what each one replaces.
PairDrop
Local and internet file sharing inspired by Snapdrop
VS
Updog
Replacement for Python SimpleHTTPServer with uploads
| Feature | PairDrop | Updog |
|---|---|---|
| Deploy effort | ≈5-minute setup | Read-the-docs project |
| Health score | 67 · Good | 54 · Fair |
| Category | File Sync & Storage | File Sync & Storage |
| License | GPL-3.0 | MIT |
| Language | JavaScript | Python |
| Setup difficulty | Easy | Easy |
| Min. RAM | 64 MB | 32 MB |
| Deployment | docker, bare-metal | binary |
| GitHub stars | ★ 11,459 | ★ 3,412 |
| First released | 2022 | 2019 |
| Replaces | AirDrop, WeTransfer | WeTransfer |
What are PairDrop and Updog?
PairDrop
PairDrop is an enhanced fork of Snapdrop that adds device pairing across networks and the internet. It enables easy, encrypted peer-to-peer file transfer between paired devices.
- Cross-network device pairing
- Paste and share text
- WebRTC encrypted transfer
Updog
Updog is a small Python utility that improves upon SimpleHTTPServer by adding upload capability, HTTPS, and optional password protection. It is useful for quick file transfers.
- Upload support over HTTP
- Optional HTTPS and auth
- Simple drop-in replacement
PairDrop vs Updog: key differences
PairDrop is written in JavaScript, while Updog is built with Python. Licensing differs — GPL-3.0 for PairDrop versus MIT for Updog. Updog is the lighter option, starting around 32 MB of RAM against 64 MB for PairDrop. Updog is the more established project (first released 2019), while PairDrop arrived in 2022. PairDrop has the considerably larger community, at 11,459 GitHub stars versus 3,412. PairDrop lists first-class Docker deployment; Updog does not.
Why pick each one
Choose PairDrop if…
- Released under the GPL-3.0 license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Mature project with 11.5k GitHub stars
Choose Updog if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- Active community (3.4k GitHub stars)
- Written in Python
Frequently asked questions
Is PairDrop or Updog better?
Neither is universally better. PairDrop has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are PairDrop and Updog free and open-source?
Yes. PairDrop is licensed under GPL-3.0 and Updog under MIT. Both can be self-hosted at no software cost.
Can I run PairDrop and Updog with Docker?
PairDrop: yes. Updog: check the project docs for container support.
Which is lighter on resources, PairDrop or Updog?
Updog has the smaller minimum footprint at 32 MB of RAM, compared to about 64 MB for PairDrop. Real-world usage depends on library size, user count, and enabled features.