We contributed to the development of the open source VPN protocol WireGuard (new window), and we maintain two of the largest cryptographic libraries on the Internet, OpenPGPjs (new window) and GopenPGP (new window).īecause Proton is rooted in scientific rigor, transparency, and peer review, we believe in the open source ethos of showing your work.

We have long been an active member and supporter of the open source community. Open sourcing all our apps is the culmination of our development approach. A better Internet is possible with open source By leveraging the entire IT security community, we are making it more likely that potential vulnerabilities are quickly discovered and fixed. Security experts can now examine the Bridge code and submit any findings via our bug bounty program (new window).

Open sourcing the code lets anyone verify how the encryption process takes place through Bridge as the emails are transferred between your Proton Mail account and your desktop email app. Proton Mail Bridge is a desktop application that allows you to fully integrate your Proton Mail account with any IMAP and SMTP email client, including Outlook, Thunderbird, or Apple Mail. And most recently, we published the code for our Android app (new window), which means all Proton apps that are out of beta are open source. Earlier this year, we open sourced all of the Proton VPN apps (new window). Our effort to open source all Proton apps began in 2015 with our Proton Mail web app (new window), followed by our iOS app (new window). You can view the code (new window) for Proton Mail Bridge for macOS, Windows, and Linux on our GitHub page.ĭownload Proton Mail Bridge Why open source matters That’s why we have prioritized making all our apps open source. Similarly, we want you to be able to see the code that makes up our apps and keeps your data safe. We want you to know who is on our team (new window) and how we protect your privacy (new window). Trust and transparency are core values of Proton Mail. Proton Mail Bridge joins iOS and the web app as open source software, and it has also passed an independent security audit. We are one step closer to fully open sourcing all our apps. Last update on NovemPublished on April 15, 2020

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