Installation Guide

Step-by-step instructions to install Onisin on macOS, Windows, and Linux.

1. Download from Official Sources

Official downloads only

Onisin is free software. Do not pay third parties for installers or “premium” versions. Only download from onisin.com. Unofficial mirrors can distribute modified installers (trojans, malware, backdoored builds).

Always download Onisin only from our official website. Downloads are served directly from official sources.

Download: Onisin_2026.1.13_aarch64.dmg

GPG signature (.gpg.sig): Onisin_2026.1.13_aarch64.dmg.gpg.sig

Always download Onisin only from our official website. Downloads are served directly from official sources.

Download: Onisin_2026.1.13_x64-setup.exe

GPG signature (.gpg.sig): Onisin_2026.1.13_x64-setup.exe.gpg.sig

Always download Onisin only from our official website. Downloads are served directly from official sources.

Download: Onisin_2026.1.13_amd64.deb

GPG signature (.gpg.sig): Onisin_2026.1.13_amd64.deb.gpg.sig

This ensures you are getting the latest and untampered version of our installer.

2. Verify the Download (Optional)

We provide checksums and signatures so you can verify integrity.

Checksum (SHA-256):

shasum -a 256 ~/Downloads/Onisin_2026.1.13_aarch64.dmg

Official SHA-256: c480b985c81b0d6e3973552dfaeb5edc4fc3ce8d949c6a73bd799259a70fe4a5

Verify GPG signature:

gpg --verify ~/Downloads/Onisin_2026.1.13_aarch64.dmg.gpg.sig ~/Downloads/Onisin_2026.1.13_aarch64.dmg

Checksum (SHA-256) via PowerShell:

Get-FileHash -Algorithm SHA256 "$HOME\Downloads\Onisin_2026.1.13_x64-setup.exe" | Format-List

Official SHA-256: 0eb70d42c533d1ceee84ec4f682b4b02cce137a9ebd30b72bb4164b9ad96717d

Verify GPG signature (requires GPG):

gpg --verify "$HOME\Downloads\Onisin_2026.1.13_x64-setup.exe.gpg.sig" "$HOME\Downloads\Onisin_2026.1.13_x64-setup.exe"

Checksum (SHA-256):

shasum -a 256 ~/Downloads/Onisin_2026.1.13_amd64.deb

Official SHA-256: e0dea0826a3531b6e128dca8efe95ac9ff1cf321a89cbcaa8b839de388b1c802

Verify GPG signature:

gpg --verify ~/Downloads/Onisin_2026.1.13_amd64.deb.gpg.sig ~/Downloads/Onisin_2026.1.13_amd64.deb

The corresponding .gpg.sig file is located next to each installer (same path, same filename with .gpg.sig appended).

GPG Signatures

We sign our installers with our own GPG key (no third-party auth services). To verify signatures, GPG must be installed on your system and you must import the Onisin public key first.

Guide: gpg-setup

You should see output similar to:

gpg: Signature made Thu 29 May 20:48:53 2025
gpg:                using RSA key <YOUR_KEY_ID>
gpg: Good signature from "onisin <info@onisin.com>" [ultimate]

3. Install and Launch

macOS Installation

Double-click Onisin_2026.1.13_aarch64.dmg to mount the disk image.
Drag the Onisin app into Applications.
If macOS blocks the app, remove quarantine:

xattr -dr com.apple.quarantine /Applications/Onisin.app

Windows Installation

Double-click Onisin_2026.1.13_x64-setup.exe
If Defender warns: More info → Run anyway.
Follow the setup wizard.

Linux (.deb-based)

Install via terminal:

sudo dpkg -i Onisin_2026.1.13_amd64.deb

Resolve missing dependencies if needed:

sudo apt-get install -f

onisin.com