







We’re excited to announce our first partner in our Ethical Advertising campaign: Sentry. Sentry was a natural first partner, both because they have a long history supporting and contributing to the open source community, and because they also strive to support open source while building a sustain...
Building an Open Source Service
What does Open Source mean at Sentry? We're refreshing our commitment to open source and how we build Sentry.

Uniregistry sponsors Read the Docs and Open Source
Today we’re excited to announce an important sponsorship partner in our Ethical Advertising campaign: Uniregistry. Our goal with our ethical advertising program is to provide important funding for open source, and show that it can be done ethically – without tracking our users and only offering a...

Introducing the Functional Source License: Freedom without Free-riding
Sentry started life in 2008 as an unlicensed, 71-line Django plugin. The next year we began publishing it under BSD-3, and ten years later we switched to the Business Source License (BSL or BUSL). Last year we purchased Codecov, and a few months ago we published it under BSL/BUSL as well. That led to some vigorous debate because of our use of the term “Open Source” to describe Codecov, from which emerged this helpful suggestion from Adam Jacob, co-founder of Chef:

Scam Ads Are Flooding Social Media. These Former Meta Staffers Have a Plan
Rob Leathern and Rob Goldman, who both worked at Meta, are launching a new nonprofit that aims to bring transparency to an increasingly opaque, scam-filled social media ecosystem.

Campaign — Free Our Feeds
Launched in January 2025, the campaign set an ambitious target to raise enough funds to back the development of an ecosystem of applications and users for open social media, focused initially on the AT Protocol, which underpins Bluesky. Our funding targets include:
Reflections: The ecosystem is moving
At Open Whisper Systems, we’ve been developing open source “consumer-facing” software for the past four years. We want to share some of the things we’ve learned while doing it. As a software developer, I envy writers, musicians, and filmmakers. Unlike software, when they create something, it is...

Reflections: The ecosystem is moving
At Open Whisper Systems, we’ve been developing open source “consumer-facing” software for the past four years. We want to share some of the things we’ve learned while doing it. As a software developer, I envy writers, musicians, and filmmakers. Unlike software, when they create something, it is...

Open Social Awards | New_ Public
The awards aim to recognize and celebrate the breakthrough products of developers building on the Open Web.

Using Ads to Sustain Open Source
Why someone who loves Privacy Badger, uses a non-tracking browser, and never cared for ads, is advocating their ethical use for open…

Donate to #FreeOurFeeds - help secure the future of social media, organized by Free Our Feeds
Free Our Feeds | A campaign to keep social media open, people-po… Free Our Feeds needs your support for #FreeOurFeeds - help secure the future of social media

Can We Ever Know If Online Advertising Really Works?
In the summer of 2003, Viacom executive Mel Karmazin managed to sum up old media’s horror of the Internet with one of business lore’s greatest vulgar...

We’re pleased to announce that we’ll be working with @eurosky.social to help to define and develop open social web infrastructure for the AT Protocol! igalia.com/2026/03/18/Advancing-the-AT-P…
Advancing the AT Protocol in Partnership with Eurosky | Igalia
www.igalia.comPlease welcome @railway.com as the newest member of @opensourcepledge.com 🎉 They rely on OSS projects like @vite.dev, @tanstack.com, @drizzle.team and @tailwindcss.com, and they're doing their part to sustain the ecosystem, from which we all benefit. Read all about it:
Railway Runs Open Source, Now We're Funding It
blog.railway.com