Syq – copy files between machines fast (better than rsync)

I got frustrated with the slowness of rsync and made an alternative that works faster by using multiple parallel connections, direct encrypted TCP when available, and other optimizations. I also added cool features like the ability to maintain a persistent ssh connection to the server for fast one-offs, the ability to download to your laptop while working in an ssh shell on a server, and the ability to do direct remote-remote transfers without forwarding your ssh agent (by using restricted ssh keys on the receiver that will only execute a specific request signed with the key on your laptop). It is also designed to be more robustly/flexibly scriptable than alternatives.

Hacker NewsToolAISource
0Sign in to voteCopy link

FL score

42

out of 100

Verdict

SKIP

medium confidence

Competition

No competitor data yet

Trend

No signal yet

A faster file transfer tool for developers that replaces rsync with parallel connections and better UX, but faces adoption barriers in a mature market.

The pain

Developers waste time waiting for rsync transfers between machines, especially over high-latency connections or when moving large datasets. The tool is also clunky to script and doesn't handle common workflows like downloading files while SSH'd into a server.

The gap

Rsync dominates despite being slow because it's ubiquitous, battle-tested, and already installed everywhere. Most developers accept the slowness rather than learn a new tool. The market has tried to replace rsync many times (scp, sftp, rclone, magic-wormhole) without displacing it.

Build angle

Start by validating that the speed gains are real and measurable for the specific use cases that hurt most (large ML datasets, remote development workflows). Build a free tier that makes switching cost-free. Focus on the SSH persistence and remote-remote transfer features as differentiation, not just speed. Target teams already frustrated enough to change (data science, ML ops, infrastructure teams moving large files regularly).

Strengths

  • Solves a real friction point with concrete technical improvements (parallel connections, persistent SSH, restricted key signing)
  • Creator has hands-on frustration and built a working prototype
  • Several genuinely useful features beyond speed (remote-remote transfers, scriptability)
  • Low barrier to trial since it's a standalone binary

Risks

  • Rsync is already installed on every Unix system; switching cost is real even if tool is faster
  • Speed improvements may not matter enough to justify learning curve for most users
  • Market has rejected rsync replacements repeatedly; no evidence this one breaks through
  • No clear monetization path for a developer tool in a crowded space
  • Requires critical mass adoption to become 'the standard' or remains a niche utility
  • Maintenance burden of supporting multiple platforms and SSH variants is high

Questions about this idea?

FlyBot reads the scoring and gives you a second opinion on “Syq – copy files between machines fast (better than rsync)”.

Open FlyBot