Quad9 deserves all the donations they can get. They offer a free Domain Name Server (DNS) that blocks malicious and phishing domains, botnet domains, stalkerware command & control (c2) servers, and other things that can cause harm to user's devices. Who doesn't love free security?

Donate to help Quad9's mission to improve the security and stability of the internet to allow everyone to be less vulnerable to risks and more effective in their daily online interactions.

Quad9 is a free, recursive, anycast DNS resolver providing end users robust security protections, high performance, and privacy.

Quad9 is a free, recursive, anycast DNS platform that provides end users robust security protections, high performance, and privacy.

Security: Quad9 blocks against known malicious domains, preventing your computers and IoT devices from connecting to malware or phishing sites. Whenever a Quad9 user clicks on a website link or types in an address into a web browser, Quad9 checks the site against a list of domains combined from 20+ different threat intelligence partners. Each threat intelligence partner supplies a list of malicious domains based on their heuristics which examine such factors as scanned malware discovery, network IDS past behaviors, visual object recognition, optical character recognition (OCR), structure and linkages to other sites, and individual reports of suspicious or malicious behavior. Based on the results, Quad9 resolves or denies the lookup attempt, preventing connections to malicious sites when there is a match.

Performance: Quad9 systems are distributed worldwide in over 200 locations in 90 nations, with more coming online daily. These servers are located primarily at Internet Exchange points, meaning that the distance and time required to get answers is lower than almost any other solution. These systems are distributed worldwide, not just in high-population areas, meaning users in less well-served areas can see significant improvements in speed on DNS lookups. The systems are “anycast,” meaning that queries will automatically be routed to the closest operational system.

Quad9

Protecting free expression and enabling secure global communication through open source privacy technology.

Long before we knew that it would be called Signal, we knew what we wanted it to be. Instead of teaching the rest of the world cryptography, we wanted to see if we could develop cryptography that worked for the rest of the world. At the time, the industry consensus was largely that encryption and cryptography would remain unusable, but we started Signal with the idea that private communication could be simple.

Since then, we’ve made some progress. We’ve built a service used by millions, and software used by billions. The stories that make it back to us and keep us going are the stories of people discovering each other in moments where they found they could speak freely over Signal, of people falling in love over Signal, of people organizing ambitious plans over Signal. When we ask friends who at their workplace is on Signal and they respond “every C-level executive, and the kitchen staff.” When we receive a subpoena for user data and have nothing to send back but a blank sheet of paper. When we catch that glimpse of “Signal blue” on a metro commuter’s phone and smile.

However, we’ve always wanted to do much more, and our limitations have often been challenging. Over the lifetime of the project, there have only been an average of 2.3 full-time software developers, and the entire Signal team has never been more than 7 people. With three client platforms to develop, a service to build and run, a growing list of integrations to assist with, and millions of users to support, that has often left us wanting.

Even so, Signal has never taken VC funding or sought investment, because we felt that putting profit first would be incompatible with building a sustainable project that put users first. As a consequence, Signal has sometimes suffered from our lack of resources or capacity in the short term, but we’ve always felt those values would lead to the best possible experience in the long term. The Signal Foundation completes our vision of Signal operating as part of a full 501(c)(3).

Signal Technology Foundation

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We are a nonprofit, so instead of charging fees we rely on the generosity of donors like you.

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I donate to nonprofits that improve the Internet and promote privacy like Signal & Quad9.