Signal

Working

A MIDI sequencer that opens in a tab and needs no install

2.4k GitHub starsPushed 22 days agoRuns in the browser2 checksMusic and audio Vercel

Open Signal SourceChecked 3 days ago

What stands out

Taken from the page and the access facts we recorded. Nothing here is guessed.

sketch a MIDI idea without opening a DAW
edit a multi-track piano roll on a machine with nothing installed
write out a melody you need to send to someone else
arrange parts for several instruments in a browser tab
No account required
Free
Source is public

What we checked

A missing tick means we have not measured it. A red mark is a check that failed.

App accessible
The last check reached a working page.
Page rendered
The last browser pass found a page that rendered.

Looked: 0
Opened: 1
Checks: 2
Watching: 0

Looked and opened count distinct browsers on this site, not verified people. Checks are requests we made. None of these come from the app itself.

Screenshot of Signal — Screenshot from our last capture

Development

3 snapshots kept

Active

Commits landed in the last 90 days.

Evidence

Each bar is one request we made

Checks: 2
Working: 100%
Median response: 1643ms
Watching since: 3 days ago

Browser render check

Checked 11 hours ago in a real browser

4 pages rendered

/rendered1301ms
/editrendered1169ms
/privacyrendered1028ms
/supportrendered932ms

Pages loaded in a real browser, not just an HTTP request. Route discovery is best-effort — nav links not in the initial DOM are not followed. How we check

Activity

Watching since 3 days ago

Last content change: None seen yet
Unchanged for: 3 days
Certificate expires: in 76 days

How it looked

2 days ago
11 hours ago

Now redirects to https://signalmidi.app/3 days ago
Its embedding policy changed3 days ago

We hash the visible text on every check, so a redesign registers and a rotating advert does not. An app that has not changed in a long time is not necessarily abandoned — but it is a fact worth knowing before you depend on it.

What it does

An open-source MIDI editor with a piano roll, arrangement view and instrument tracks, running in the browser. Useful for sketching an arrangement, or opening a MIDI file when the machine in front of you has no sequencer on it.

What people say

No reviews yet.

We would rather show none than invent them.

Embed this status

Put it in your README. It updates itself every time we check, and links to your verification record — evidence a stranger can read, not a page selling them something.

[![Signal — still works](https://itstillworks.cruscible.com/api/badge/signal-midi)](https://itstillworks.cruscible.com/verify/signal-midi)

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