Two downloads: Free to check documents, the Suite for every plan. Then add the plugin for your tools. Every file here ships with its own .vrfy seal — check it before you run it.
Pre-built bundles — drop in, configure, run. No build toolchain required.
By downloading, you agree to the Software Licence Agreement. Checking documents is free and always will be; a paid plan unlocks sealing, encryption and key management.
setup.exe installer; macOS: open the signed .pkg installer; Linux: extract the bundle and run install.sh as administratortrustdid-setup --managed YOUR_TOKEN YOUR_ID — that one command generates keys, publishes your DID, and pulls your license from the API automatically. Full walkthrough in the Software Bundle install guidetrustdid-service statustrustdid-check — one pass validates your keys, DID publication, DNS records, and every configured trust registrytrustdid-setup --add-trusted-registry REGISTRY_DID, so verification can tell you who vouches for the signers you deal with (trustdid-check re-validates configured registries)Step-by-step instructions for every download are in the Install Guides section.
Seal Gmail messages and check TrustDID seals on any website.
Sign emails in Gmail and verify TrustDID seals on any website. Progressive trust verification with a color-coded browser icon.
Sign emails in Gmail and verify TrustDID seals on any website. Same features as Chrome/Edge, built natively for Firefox with Manifest V3.
By downloading, you agree to the Software Licence Agreement. Checking documents is free and always will be; a paid plan unlocks sealing, encryption and key management.
Seal on send and check on open, directly inside your mail client.
Sign and verify emails in Outlook desktop and Outlook on the web. Auto-sign on send, verification task pane, and footer signature.
Full email signing and verification directly in Thunderbird. Auto-sign on send, auto-verify on open, footer signature, and full bilingual interface.
By downloading, you agree to the Software Licence Agreement. Checking documents is free and always will be; a paid plan unlocks sealing, encryption and key management.
Every plan installs the same Suite; your licence decides which tools run, so changing plans
is trustdid-setup --pull, not a new download. Free holds the verifier only. The
local TrustDID service is registered automatically as a Windows service (by the
setup.exe installer) or a systemd unit (by install.sh on Linux).