Compare · Zettar vs Aspera

The Aspera alternative — open, turnkey, no lock-in.

Commercial movers like Aspera and Signiant are fast over the WAN — but proprietary, metered by throughput, and software-only, so you still size, tune, and own the hardware. Zettar delivers line rate as a co-designed appliance, on open hardware, with no protocol or data lock-in.

The problem

Where proprietary movers cost you.

FASP-based commercial movers work, but the price is paid in lock-in and TCO: a proprietary protocol and format that tie up your data, licensing metered by throughput or volume, and a closed, proprietary stack you don't control. And because they are software only, hitting line rate is still your project — you select, integrate, and tune the servers, storage, and network yourself.

Side by side

Commercial movers vs the Zettar zx Appliance.

 Aspera / SigniantZettar zx
LicensingProprietary, metered by throughput / volumeOne appliance — no per-GB license
Lock-inProprietary protocol & formatOpen hardware, native formats, no lock-in
HardwareSoftware only — you size and tune itCo-designed appliance, pretuned
TransparencyClosed, proprietaryOpen, measurable, line rate (~90%+)
SupportSoftware vendor onlyOne accountable solution (hardware + software)
Petascale proof1 PB in 29 hours with SLAC & the U.S. DOE
SecurityProprietaryTLS + end-to-end checksums, on-prem, in-country

Zettar is not a faster proprietary stack — it is an open, co-designed system. You get line rate and you keep your data, your formats, and your choice of hardware.

Why Zettar

Co-designed for line rate, owned by you.

The Zettar zx Appliance co-engineers hardware and software to run at line rate — roughly 10× typical movers, with no software ceiling — and ships pretuned on the enterprise platform you standardize on. No proprietary lock-in, no per-GB meter, one accountable solution. Built on U.S. DOE Office of Science–funded R&D; winner of the Supercomputing Asia 2019 Data Mover Challenge.

Compare Zettar with: rsync · Globus · Aspera / Signiant

FAQ

Common questions

FAQ

How is Zettar different from Aspera or Signiant?

Those are proprietary, software-only movers metered by throughput or volume. Zettar is a co-designed appliance on open hardware: line rate, native formats, no protocol or data lock-in, no per-GB license, and supported as one solution.

FAQ

Does switching from Aspera mean re-architecting?

No. zx moves data in native formats with no proprietary repository, so there is nothing to convert or re-architect. It is racked and moving data in days, on the hardware you choose.

FAQ

Is Zettar faster than Aspera?

Both move data quickly; the difference is that zx is open and co-designed for line rate (about 90%+) end to end, and you can measure it — versus a closed, proprietary stack — while avoiding lock-in and per-GB licensing. Compare on your own data with our transfer calculator.

Get started

Line rate — without the lock-in.

See the appliance move your data as fast as the wire allows, on hardware you own, with no proprietary tax.