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Downloads
New here? Follow the step-by-step setup guide — install, activate your license, get your USB token recognised and make your first signature.
Download the latest OneSigner tools and utilities.
OneSignerBridge (free)
Free for everyone, no license or account needed: lets your browser sign PDFs with your own USB token. Try it at onesign.sg/sign.
OneSignerBridge (browser + USB token helper)
Small helper that lets your browser sign with your own USB token / smart card (needs .NET 8 Desktop Runtime). Version 1.1.0: when you enter the token PIN on the signing page, it signs through the token's own PKCS#11 module, so Viettel-CA, VNPT-CA, FastCA and similar tokens no longer pop up their PIN window. Works in Chrome 141+ (own TLS certificate, HTTPS command channel). Signed by One Sign Pte. Ltd.
Small helper that lets your browser sign with your own USB token / smart card (needs .NET 8 Desktop Runtime). Version 1.1.0: when you enter the token PIN on the signing page, it signs through the token's own PKCS#11 module, so Viettel-CA, VNPT-CA, FastCA and similar tokens no longer pop up their PIN window. Works in Chrome 141+ (own TLS certificate, HTTPS command channel). Signed by One Sign Pte. Ltd.
2026.10.10 · windows · 0.8 MB
OneSigner Service + GUI
Automated PDF & Code Signing Windows Service
OneSigner Setup (Free Trial)
OneSigner Service + Config GUI installer with the eSign portal. New in 2026.10.12: (1) Security: the portal now requires a new password (8+ characters) on the first login with the default admin/admin, and the Azure Key Vault proxy accepts only an exact admin token or partner code. (2) Browser signing plugin (Sign visually, eSign with your own token) is available in 15 languages: English plus Asian languages, with the install guide translated. Includes everything from 2026.10.11 (in-app free trial, PDF timestamp + LTV, Acrobat-valid browser signatures). 30-day free trial. Signed by One Sign Pte. Ltd. Installer shows the End User License Agreement and requires acceptance; existing appsettings.json is never overwritten on upgrade.
OneSigner Service + Config GUI installer with the eSign portal. New in 2026.10.12: (1) Security: the portal now requires a new password (8+ characters) on the first login with the default admin/admin, and the Azure Key Vault proxy accepts only an exact admin token or partner code. (2) Browser signing plugin (Sign visually, eSign with your own token) is available in 15 languages: English plus Asian languages, with the install guide translated. Includes everything from 2026.10.11 (in-app free trial, PDF timestamp + LTV, Acrobat-valid browser signatures). 30-day free trial. Signed by One Sign Pte. Ltd. Installer shows the End User License Agreement and requires acceptance; existing appsettings.json is never overwritten on upgrade.
2026.10.12 · windows · 143.1 MB
OneSignTool CLI
Remote Code Signing Tool (AzureSignTool compatible)
OneSignTool CLI
Remote code-signing CLI (AzureSignTool-compatible). Signed by One Sign Pte. Ltd.
Remote code-signing CLI (AzureSignTool-compatible). Signed by One Sign Pte. Ltd.
2.1.0 · windows · 67.5 MB