OnionShare 2 adds anonymous dropboxes, supports new Tor addresses, and is translated into a dozen new languages
Authenticator – Add-ons for Firefox
Authenticator generates 2-Step Verification codes in your browser.
Privacy Tools - Encryption Against Global Mass Surveillance
You are being watched! Knowledge, encryption and privacy tools to protect you against global mass surveillance.
Cryptomator: Free Cloud Encryption for Dropbox & Others
FINALLY, exactly what I'd wanted!
nada - Temporary Email
WoSign: Free 2y multi-domain SSL certificate (SAN/UCC)