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A Sibelius alternative that runs in your browser

Sibelius is Avid’s professional notation application, and it is desktop software: you install it, license it, and edit where the install is. StaffWeaver is a music notation editor built for the other way of working — fully in the browser, touch-first on tablets, scores saved to your account rather than to one machine, AI scanning for the paper library with a side-by-side repair workflow, an AI chat that can write a whole score from a prompt, and printing that paginates properly. If you have ever wanted to pick up a score from a school Chromebook, a rehearsal iPad or a borrowed laptop, this page is for you.

We are not trying to out-engrave Sibelius, and this page isn’t affiliated with Avid — we’d rather make the honest case for where each tool fits.

What a browser-first workflow gets you

Nothing to install, and no licence to move

StaffWeaver runs entirely in a modern browser. There is no download, no installer, and no licence to deactivate on one machine before it will run on another — you sign in and your scores are there. That matters most on the machines you do not control: a school Chromebook, a rehearsal-room desktop, a borrowed laptop.

Editing on a tablet, not just a workstation

Note entry is touch-first: drag and drop from the palette, or tap notes onto a slide-up piano keyboard with octave shift and a chord-building mode. The editor supports tablet-sized screens and larger — iPad, Android tablets, Chromebooks, laptops, and desktops. Phone-sized screens are not supported for editing.

Your existing scores come across as MusicXML

Sibelius exports MusicXML, and MusicXML import is free here on every plan (.xml, .musicxml and compressed .mxl, up to 5 MB a file). Export is free too, so nothing you write here is trapped: send a score back out as MusicXML whenever you want it. We cannot open a .sib file directly — the route in is Sibelius’s own MusicXML export.

Scanning the paper library, with the number stated

Upload a PDF, PNG or JPEG (15 MB and 10 pages a job) and AI scanning produces an editable first draft, not a transcription. On real published lead sheets it scores a mean F1 of 0.34; on our synthetic corpus, 0.825 pooled. That is an assistive starting point you finish in Review Mode, which puts the scan beside the original page for a side-by-side repair loop with one-click fixes and per-measure AI assist.

An AI that writes a score, not just edits one

AI Score Chat can create a whole score from a prompt — instrumentation, key, time signature and notes — and then keep editing it conversationally. AI features run on credits; composing, playback, printing, MusicXML import and export, and the structural Proofread checks cost no credits on any plan.

Parts, transposition and printing that paginates

Start a score from an ensemble — Concert Band, Jazz Band, Orchestra, Marching Band, or an SATB, SSA or SAB choir — and it loads in that ensemble’s own score order, bracketed by section. Every part renders and prints in the pitch the player actually reads, with correctly transposed key signatures and a one-click toggle to concert pitch for the conductor. Single parts view and print on their own pages, with no blank first page and no system split across a page break.

Seats for a section, priced on the page

Premium is priced per seat, so a band, choir or orchestra can share one score library with everyone editing the same scores. Every price is published on the pricing page — there is no sales call and no quote to request.

Where Sibelius still wins

An honest comparison cuts both ways — here is what we don’t do.

Engraving depth and fine control

Sibelius is a mature professional engraving application with decades of typographic control behind it — house styles, detailed spacing and beaming rules, and per-object positioning of a kind we do not offer. If your work is publication engraving and the last five percent of the page is the job, that is Sibelius’s ground, not ours.

Plugins, and a very deep feature surface

Sibelius has a long-established plugin ecosystem and a feature set built up over many versions. StaffWeaver has no plugin API, and there are corners of a large notation application we simply have not built.

Working fully offline

An installed desktop application keeps working with no network at all. StaffWeaver keeps offline drafts that sync when you reconnect, but it is a web application: signing in, saving to your account, and every AI feature need a connection.

We export MusicXML only

Export here is MusicXML (.musicxml, .mxl), client-side and free. There is no MIDI export, no audio export and no PDF export — printing goes through your browser’s print dialog.

Frequently asked questions

Can I open my Sibelius files in StaffWeaver?
Not a .sib file directly — we import MusicXML. Sibelius can export MusicXML, and that file imports here free on every plan (.xml, .musicxml, or compressed .mxl, up to 5 MB). Export back out is MusicXML too, so moving between the two is a round trip rather than a one-way door.
Do I need to install anything?
No. StaffWeaver runs in a modern browser on a tablet, Chromebook, laptop or desktop. There is nothing to download, nothing to license per machine, and nothing an IT policy has to approve for installation.
Does it work on an iPad?
Yes — the editor supports tablet-sized screens and larger, and note entry is touch-first. Phone-sized screens are not supported for editing, because the notation surface and the palettes need the room to be usable rather than merely present.
How good is the sheet-music scanning, really?
Stated plainly: a mean F1 of 0.34 on real published lead sheets, and 0.825 pooled on our synthetic corpus. It produces an editable first draft, not a transcription. The workflow assumes repair — Review Mode shows the scan beside the original page with one-click fixes and per-measure AI assist — so treat it as a head start on retyping, not as a finished score.
Is there a free plan?
Yes, and it is a real plan rather than a trial: no credit card, no time limit, and the whole editor, holding up to 10 saved scores. MusicXML import and export are free on every plan, so your work is never locked in. Premium lifts the score limit and adds monthly AI credits.
Is StaffWeaver affiliated with Avid or Sibelius?
No. StaffWeaver is an independent product. Sibelius is named here only for comparison, and this page makes no claim of affiliation, endorsement or sponsorship.

Try the browser-first way

Export MusicXML from Sibelius, upload it here, and keep editing from any tablet, Chromebook or laptop — then export MusicXML straight back out whenever you want it. Free to start, no credit card required.

Sibelius and Avid are trademarks of their respective owners. StaffWeaver is an independent product and is not affiliated with, endorsed by, or sponsored by Avid Technology, Inc.