croc vs transfer.sh
A side-by-side comparison of two self-hosted file sync & storage options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | croc | transfer.sh |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 99 · Excellent | 76 · Good |
| Category | File Sync & Storage | File Sync & Storage |
| License | MIT | MIT |
| Language | Go | Go |
| Setup difficulty | Easy | Easy |
| Min. RAM | 32 MB | 64 MB |
| Deployment | binary | docker, binary |
| GitHub stars | ★ 40,431 | ★ 15,897 |
| First released | 2018 | 2014 |
| Replaces | WeTransfer, AirDrop | WeTransfer |
What are croc and transfer.sh?
croc
croc is a tool that allows two computers to transfer files and folders simply and securely. It uses a relay with end-to-end encryption and a code-phrase system for pairing.
- End-to-end encrypted transfers
- Code-phrase pairing
- Self-hostable relay server
transfer.sh
transfer.sh is a service that lets you upload and share files directly from the command line using curl. It supports encryption, S3 and Google Cloud Storage backends, and maximum download counts.
- Command-line uploads with curl
- Multiple storage backends
- Optional encryption
croc vs transfer.sh: key differences
Both projects are written in Go. Croc is the lighter option, starting around 32 MB of RAM against 64 MB for transfer.sh. Transfer.sh is the more established project (first released 2014), while croc arrived in 2018. Croc has the considerably larger community, at 40,431 GitHub stars versus 15,897. Transfer.sh lists first-class Docker deployment; croc does not.
Why pick each one
Choose croc if…
- Simple code-phrase pairing
- End-to-end encrypted
- Resumable transfers
Watch out for
- CLI only
- Public relay by default
Choose transfer.sh if…
- Curl-friendly uploads
- S3 backend support
- Download limits and encryption
Watch out for
- Sparse recent development
- Minimal web interface
Frequently asked questions
Is croc or transfer.sh better?
Neither is universally better. croc has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are croc and transfer.sh free and open-source?
Yes. croc is licensed under MIT and transfer.sh under MIT. Both can be self-hosted at no software cost.
Can I run croc and transfer.sh with Docker?
croc: check the project docs for container support. transfer.sh: yes.
Which is lighter on resources, croc or transfer.sh?
croc has the smaller minimum footprint at 32 MB of RAM, compared to about 64 MB for transfer.sh. Real-world usage depends on library size, user count, and enabled features.