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Croc: Easily and securely send things from one computer to another

Screenshot of github.com captured 2026-07-20
Page preview · captured 2026-07-20

Resurfaced independently across 6 calendar years, with breakout response in 2 of them.

submissions
10
submitters
9
observed span
2017–2023
peak thread · 141 comments
300 pts
latest 20+ return · 2023-09-22
300 pts

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

First comments on top threads

HN comment order

A more popular and, I think, carefully analyzed alternative, from which croc was inspired, is Magic Wormhole; a good Golang implementation that compiles down to a single binary is wormhole-william: https://github.com/psanford/wormhole-william/releases I believe croc has some features wormhole doesn't (and some anti-features, like being able to pick curves and hashes). But also just that it's worth knowing that Magic Wormhole is kind of the "default" tool that does this.

tptacek·300-point thread·

The author has a blog post at https://schollz.com/blog/croc6/ with more information. I would like to see a security analysis. The code phrases seem ludicrously short to me …

rauhl·150-point thread·

Love croc. It’s my go to tool for moving files between machines.

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

Breakout years
2

100+ points or 50+ comments

Total points
475

reference only — not used in Hall rules or ranking

Total comments
210

reference only — not used in Hall rules or ranking

Every submission