Download OpenChronology

Version v0.5.0 · released October 24, 2026 · Release notes

Use OpenChronology in your browser

The desktop app runs on Windows, macOS and Linux. On this device, open the website, or download the offline file to use without a network.

Open OpenChronology Offline browser file (.html)

Desktop

Any browser

The whole editor in one HTML file. It never uses the network; timelines stay on your device.

Offline browser file (.html)530 KB

CFAM edition

For causal factor analysis: the Causal factor analysis plugins enabled, Gregorian dates, and new timelines starting at today.

Open at openchronology.github.io/cfam/CFAM offline file (.html)530 KB

Server

Run your own OpenChronology server for your organization or community. The package installs PostgreSQL, sets up the database and starts the service on port 5173; put an HTTPS proxy in front of it and set your address in /etc/openchronology/openchronology.env.

Windows

Download and run the installer, in PowerShell (it asks for administrator rights):

Invoke-WebRequest https://github.com/openchronology/timeline-app/releases/download/v0.5.0/openchronology-server-windows-amd64-setup.exe -OutFile "$env:TEMP\openchronology-server-windows-amd64-setup.exe"; Start-Process -Wait -Verb RunAs "$env:TEMP\openchronology-server-windows-amd64-setup.exe"

Installer (.exe), 64-bit, with PostgreSQL 1775.5 MB Setup guide

macOS (Homebrew)

Install with Homebrew, Apple silicon or Intel:

brew install openchronology/tap/openchronology-server && openchronology-setup

Setup guide

Debian 13 (trixie)

Download and install in one line:

curl -fLO https://github.com/openchronology/timeline-app/releases/download/v0.5.0/openchronology-server-debian13-amd64.deb && sudo apt install ./openchronology-server-debian13-amd64.deb

Server package (.deb), amd6473.9 MB Setup guide

Ubuntu 24.04 LTS

Download and install in one line:

curl -fLO https://github.com/openchronology/timeline-app/releases/download/v0.5.0/openchronology-server-ubuntu24.04-amd64.deb && sudo apt install ./openchronology-server-ubuntu24.04-amd64.deb

Server package (.deb), amd6473.9 MB Setup guide

Rocky Linux and RHEL 10

Download and install in one line:

curl -fLO https://github.com/openchronology/timeline-app/releases/download/v0.5.0/openchronology-server-rocky10-amd64.rpm && sudo dnf install ./openchronology-server-rocky10-amd64.rpm

Server package (.rpm), amd6478.0 MB Setup guide

Fedora 44

Download and install in one line:

curl -fLO https://github.com/openchronology/timeline-app/releases/download/v0.5.0/openchronology-server-fedora44-amd64.rpm && sudo dnf install ./openchronology-server-fedora44-amd64.rpm

Server package (.rpm), amd6477.8 MB Setup guide

FreeBSD 15

Download and install in one line, as root:

fetch https://github.com/openchronology/timeline-app/releases/download/v0.5.0/openchronology-server-freebsd15-amd64.pkg && pkg install -y ./openchronology-server-freebsd15-amd64.pkg && openchronology-setup

Server package (.pkg), amd6439.4 MB Setup guide

FreeBSD 14

Download and install in one line, as root:

fetch https://github.com/openchronology/timeline-app/releases/download/v0.5.0/openchronology-server-freebsd14-amd64.pkg && pkg install -y ./openchronology-server-freebsd14-amd64.pkg && openchronology-setup

Server package (.pkg), amd6439.4 MB Setup guide

Docker

On any system with Docker Engine and Compose: build and run the server and its database from the source.

git clone https://github.com/openchronology/timeline-app.git && cd timeline-app && cp .env.example .env && docker compose up --build --wait

Docker deployment guide

More server platforms will be added here as they are supported.

Verify and build

SHA-256 checksums of every file in the release.
Source code: web and server, desktop, and the repository. OpenChronology is free software under the GNU GPL version 3.
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