ontime

ontime 4.15.0

Free, open-source time keeping for live events

  • By Carlos Valente
  • Open Source
  • Updated Oct 18, 2026
Download for Windows

About ontime

Ontime is a browser-based application that manages event rundowns, scheduling, and cueing.

What's new in 4.15.0

This release is full of server improvements and some rounding up of features as groundwork for what is coming up. We are excited to put it all together in a sequence of great features and a new v5 release.

Whats new

  • Both the timeline and the studio clock views can now show a user chosen secondary text field
  • The logging system was reviewed with new features to help debugging connections and issues in Ontime
  • The desktop app can now warn users when new versions are released

Whats better

  • The countdown view can now handle skipped events consistently, otherwise we have also reviewed this interface and flows for best user experience
  • Several performance improvements were made to the server and UIs, so we have plenty performance budget to a create new flows

We have also included several minor bug fixes and style tweaks

What's Changed

  • [ontime-server] Isolate test data from the user's Ontime folder by @cpvalente in https://github.com/cpvalente/ontime/pull/2235
  • [ontime-ui] Strengthen client unit and e2e tests by @cpvalente in https://github.com/cpvalente/ontime/pull/2238
  • [ontime-ui] Unit test cloud prefix URLs and view presentation utils by @cpvalente in https://github.com/cpvalente/ontime/pull/2240
  • separate server lifecycle from process handling by @cpvalente in https://github.com/cpvalente/ontime/pull/2236
  • feat(client):redesign pin page by @cpvalente in https://github.com/cpvalente/ontime/pull/2239
  • [ontime-server] Add in-process integration test harness by @cpvalente in https://github.com/cpvalente/ontime/pull/2237
  • small ui tweaks by @cpvalente in https://github.com/cpvalente/ontime/pull/2242
  • review render performance by @cpvalente in https://github.com/cpvalente/ontime/pull/2243
  • client test improvements by @cpvalente in https://github.com/cpvalente/ontime/pull/2241
  • improve flushing of changes to project file by @cpvalente in https://github.com/cpvalente/ontime/pull/2233
  • runtime state receives epoch by @cpvalente in https://github.com/cpvalente/ontime/pull/2231
  • replace EventTimer with a ticking timer by @cpvalente in https://github.com/cpvalente/ontime/pull/2246
  • consolidate license claim by @cpvalente in https://github.com/cpvalente/ontime/pull/2251
  • add tests for rundown editing and Google Sheets by @cpvalente in https://github.com/cpvalente/ontime/pull/2248
  • performance(server):add compression in data endpoints by @cpvalente in https://github.com/cpvalente/ontime/pull/2254 …

Full release notes »

Technical details

PublisherCarlos Valente
Authorcpvalente
Version4.15.0
Release date2026-10-18
LicenseGPL-3.0
Installer typenullsoft
Architecturex64
Package IDcpvalente.ontime

Install ontime from the command line

Install with Windows Package Manager
winget install --id=cpvalente.ontime -e
Update to the latest version
winget upgrade --id=cpvalente.ontime -e
Uninstall
winget uninstall --id=cpvalente.ontime -e
Silent install with the offline installer
"ontime-win64.exe" /S

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ontime version history

  • 4.14.1
  • 4.14.0
  • 4.13.0
  • 4.12.0
  • 4.7.0
  • 4.6.0
  • 4.5.0
  • 3.16.1

Frequently asked questions

Is ontime free?

Yes. ontime is free and open-source software released under the GPL-3.0 license.

What is the latest version of ontime?

The latest version is 4.15.0, released on Oct 18, 2026.

Is it safe to download ontime?

The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 1ef73c5028add3b20ae5fa13be45f6e30ae9e3f9a9c89acdc4680f6e398f1fdd.

Which Windows versions does ontime support?

ontime runs on Windows and is available for 64-bit (x64) systems.

How do I install ontime silently?

Run the offline installer with "ontime-win64.exe" /S, or install it with Windows Package Manager: winget install --id=cpvalente.ontime -e --silent.

How do I uninstall ontime?

Open Settings › Apps › Installed apps, find ontime and select Uninstall. From the command line, run winget uninstall --id=cpvalente.ontime -e.