{"title":"atvari","subtitle":"atvari GmbH is a software and cloud engineering consultancy based in L\u00fcneburg, Germany, specializing in Nix and Rust.","link":[{"@attributes":{"rel":"self","type":"application\/atom+xml","href":"https:\/\/atvari.eu\/atom.xml"}},{"@attributes":{"rel":"alternate","type":"text\/html","href":"https:\/\/atvari.eu"}}],"icon":"https:\/\/atvari.eu\/apple-touch-icon.png","logo":"https:\/\/atvari.eu\/images\/logo.svg","rights":"Copyright \u00a9 atvari GmbH","author":{"name":"atvari GmbH","email":"hi@atvari.eu","uri":"https:\/\/atvari.eu\/"},"generator":"Zola","updated":"2026-10-26T00:00:00+00:00","id":"https:\/\/atvari.eu\/atom.xml","entry":[{"title":"Bringing SpamBlocker to Google Play","published":"2026-10-26T00:00:00+00:00","updated":"2026-10-26T00:00:00+00:00","author":{"name":"Felix Schr\u00f6ter"},"category":[{"@attributes":{"term":"announcement"}},{"@attributes":{"term":"open-source"}}],"link":{"@attributes":{"rel":"alternate","type":"text\/html","href":"https:\/\/atvari.eu\/blog\/spam-blocker-google-play\/"}},"id":"https:\/\/atvari.eu\/blog\/spam-blocker-google-play\/","content":"<p>\ud83d\udcf1 <strong>SpamBlocker is now available on <a rel=\"external\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=spam.blocker.googleplay\">Google Play<\/a>.<\/strong><\/p>\n<p><a rel=\"external\" href=\"https:\/\/github.com\/aj3423\/SpamBlocker\">SpamBlocker<\/a> is an open source call and SMS blocker for Android, developed by <a rel=\"external\" href=\"https:\/\/github.com\/aj3423\">aj3423<\/a>. It filters calls and messages using priority-based rules, offline spam databases, STIR\/SHAKEN attestation, and machine learning, and it can report spam automatically so that the shared database keeps improving for everyone. No tracking, no ads, MIT licensed.<\/p>\n<p>Until now, the app was distributed through <a rel=\"external\" href=\"https:\/\/github.com\/aj3423\/SpamBlocker\/releases\">GitHub releases<\/a> and <a rel=\"external\" href=\"https:\/\/f-droid.org\/packages\/spam.blocker\">F-Droid<\/a>. Both remain first-class ways to install it. Google Play simply adds the place where most Android users look first, which makes it available to a larger audience and easier to recommend to people who have never sideloaded an APK or set up an F-Droid client.<\/p>\n<h3 id=\"why-this-cooperation\">Why this cooperation<\/h3>\n<p>atvari GmbH is the publisher of record for the Google Play listing. We handle the store-side requirements, serve as the legal contact for Google and for users of the Play variant, and make sure updates keep flowing through the store.<\/p>\n<p>That is the whole scope. SpamBlocker remains an independent project: development, roadmap, and release decisions stay with <a rel=\"external\" href=\"https:\/\/github.com\/aj3423\">aj3423<\/a> and the project's contributors. We don't interfere with how the app is built or what it does. The Play build comes from the same open source codebase, under the same MIT license, and the other distribution channels are unaffected.<\/p>\n<p>It also fits a principle we keep coming back to on our <a href=\"https:\/\/atvari.eu\/open-source\/\">Open Source page<\/a>: open source is the ground we stand on. The useful thing to do with a good project is to help it reach more people, not to take it over.<\/p>\n<h3 id=\"same-app-same-privacy\">Same app, same privacy<\/h3>\n<p>The Play variant is free, just like the F-Droid build. It contains no tracking, no advertising, and no telemetry. Every line of code is still public and auditable.<\/p>\n<p>Because Google Play requires a separate application ID, the Play build is published as <code>spam.blocker.googleplay<\/code>. It can be installed alongside the existing <code>spam.blocker<\/code> app, so you can try it without uninstalling your current setup. If you prefer direct, reproducible builds or update through <a rel=\"external\" href=\"https:\/\/github.com\/ImranR98\/Obtainium\">Obtainium<\/a>, nothing changes for you.<\/p>\n<h3 id=\"thanks-to-the-testers\">Thanks to the testers<\/h3>\n<p>Before an app can go into production on Google Play, Google requires a closed test with a minimum number of testers over a sustained period. We asked the community for help, and the response was great: testers joined the Google Group, installed the build, and kept it running for the required two weeks. Thank you, this launch would not have happened without you.<\/p>\n<h3 id=\"get-spamblocker\">Get SpamBlocker<\/h3>\n<ul>\n<li><strong><a rel=\"external\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=spam.blocker.googleplay\">Google Play<\/a><\/strong>: convenient installs and automatic updates<\/li>\n<li><strong><a rel=\"external\" href=\"https:\/\/f-droid.org\/packages\/spam.blocker\">F-Droid<\/a><\/strong>: fully free and open source app store<\/li>\n<li><strong><a rel=\"external\" href=\"https:\/\/github.com\/aj3423\/SpamBlocker\/releases\">GitHub releases<\/a><\/strong>: direct APKs and release notes<\/li>\n<li><strong><a rel=\"external\" href=\"https:\/\/github.com\/aj3423\/SpamBlocker\">Source code<\/a><\/strong>: MIT licensed, contributions welcome<\/li>\n<\/ul>\n<p>\ud83d\udc49 <a rel=\"external\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=spam.blocker.googleplay\">Install SpamBlocker from Google Play<\/a><\/p>\n"},{"title":"atvari sponsors NixCon 2026","published":"2026-09-16T00:00:00+00:00","updated":"2026-09-16T00:00:00+00:00","author":{"name":"Felix Schr\u00f6ter"},"category":[{"@attributes":{"term":"announcement"}},{"@attributes":{"term":"nix"}}],"link":{"@attributes":{"rel":"alternate","type":"text\/html","href":"https:\/\/atvari.eu\/blog\/nixcon-2026-bronze-sponsor\/"}},"id":"https:\/\/atvari.eu\/blog\/nixcon-2026-bronze-sponsor\/","content":"<p>\u2744\ufe0f <strong>atvari GmbH is a <a rel=\"external\" href=\"https:\/\/2026.nixcon.org\/#sponsors\">Bronze sponsor of NixCon 2026<\/a><\/strong>.<\/p>\n<p><a rel=\"external\" href=\"https:\/\/2026.nixcon.org\/\">NixCon<\/a> is the annual gathering of the Nix community, where developers, operators, researchers, and enthusiasts share ideas, present new work, and explore the future of reproducible systems. This year's edition takes place from 25 to 28 September 2026 at the Jagiellonian University Auditorium Maximum in Krak\u00f3w, Poland, with 600\u2013700 attendees expected across two program days and two hack\/unconference days, including the very first NixCon CTF.<\/p>\n<p>Sponsoring NixCon is a natural fit for us. We've built our practice around Nix and NixOS specifically: reproducible builds, deployment, CI, and the harder migrations that come with adopting Nix in an existing enterprise. Our founder has been a <a rel=\"external\" href=\"https:\/\/github.com\/NixOS\/nixpkgs\">Nixpkgs<\/a> contributor since 2019, a maintainer since 2020, and a committer since 2024. Supporting the conference that brings this community together is part of giving back to the ecosystem our business is built on.<\/p>\n<p>Are you going to NixCon? We'd love to meet, <a href=\"https:\/\/atvari.eu\/contact\/\">get in touch<\/a> beforehand or just come say hi in Krak\u00f3w.<\/p>\n<p>\ud83d\udc49 <a rel=\"external\" href=\"https:\/\/2026.nixcon.org\/#sponsors\">See the NixCon 2026 sponsors<\/a><\/p>\n"},{"title":"atvari joins the Rust Commercial Network","published":"2026-09-10T00:00:00+00:00","updated":"2026-09-10T00:00:00+00:00","author":{"name":"Felix Schr\u00f6ter"},"category":[{"@attributes":{"term":"announcement"}},{"@attributes":{"term":"rust"}}],"link":{"@attributes":{"rel":"alternate","type":"text\/html","href":"https:\/\/atvari.eu\/blog\/rust-commercial-network\/"}},"id":"https:\/\/atvari.eu\/blog\/rust-commercial-network\/","content":"<p>\ud83e\udd80 <strong>atvari GmbH is now a <a rel=\"external\" href=\"https:\/\/rust-commercial-network.github.io\/rcn\/members.html\">member<\/a> of the <a rel=\"external\" href=\"https:\/\/rustfoundation.org\/rust-commercial-network\/\">Rust Commercial Network<\/a><\/strong> (RCN).<\/p>\n<p>The RCN is a collective, hosted by the Rust Foundation, that gives companies building on Rust a direct line to the people building the language, and gives Rust Project developers real insight into the challenges industrial users face. It brings together organizations of very different sizes, from AWS, Google, and Microsoft down to small specialist consultancies, plus individual contributors, all working through topic-specific groups toward the same goal: making Rust easier to adopt and maintain in production.<\/p>\n<p>That mission lines up directly with what we do at atvari. We're a European company offering consulting and contracting, specializing in Rust and Nix \/ NixOS, and our team has hands-on experience running Rust in production. Joining the RCN means we can help push that experience back into the ecosystem, alongside 75+ organizations and 100+ individuals doing the same.<\/p>\n<p>What the network works on:<\/p>\n<ul>\n<li>Direct feedback channels between commercial Rust users and Rust Project maintainers<\/li>\n<li>Working groups tackling shared adoption and maintenance challenges<\/li>\n<li>Funding and support directed toward Rust maintainers<\/li>\n<li>Shared standards and best practices for running Rust in production<\/li>\n<\/ul>\n<p>If you're evaluating Rust for production or already depend on it and want an experienced partner, <a href=\"https:\/\/atvari.eu\/contact\/\">get in touch<\/a>. We'd love to help.<\/p>\n<p>\ud83d\udc49 <a rel=\"external\" href=\"https:\/\/rust-commercial-network.github.io\/rcn\/members.html\">See the full RCN member list<\/a><\/p>\n"},{"title":"atvari listed on the NixOS commercial support page","published":"2026-09-07T00:00:00+00:00","updated":"2026-09-07T00:00:00+00:00","author":{"name":"Felix Schr\u00f6ter"},"category":[{"@attributes":{"term":"announcement"}},{"@attributes":{"term":"nix"}}],"link":{"@attributes":{"rel":"alternate","type":"text\/html","href":"https:\/\/atvari.eu\/blog\/nixos-commercial-support\/"}},"id":"https:\/\/atvari.eu\/blog\/nixos-commercial-support\/","content":"<p>\u2744\ufe0f <strong>atvari GmbH is now listed on the <a rel=\"external\" href=\"https:\/\/nixos.org\/community\/commercial-support\/\">official NixOS commercial support page<\/a><\/strong>.<\/p>\n<p>That page is where the NixOS project points companies and teams who are evaluating Nix or NixOS for production and want a partner to help them get there or keep it running. Being listed means the project itself is pointing people our way.<\/p>\n<p>We've built our practice around Nix and NixOS specifically: reproducible builds, deployment, CI, and the harder migrations that come with adopting Nix in an existing enterprise. Alongside our Rust consulting, this is one of the two things we specialize in, and it's what we spend most of our time doing.<\/p>\n<p>That's not just a service we sell, it's a community we're part of. Our founder has been a <a rel=\"external\" href=\"https:\/\/github.com\/NixOS\/nixpkgs\">Nixpkgs<\/a> contributor since 2019, a maintainer since 2020, and a committer since 2024: maintaining popular packages and modules, reviewing PRs, and keeping security-sensitive packages like Tor Browser and Mullvad Browser patched and up to date. For clients, that means direct access to people who work upstream every day: fixes land at the source instead of as local patches, and we know what's actually coming in the next release instead of reading about it after the fact. We're also listed as Nix \/ NixOS consultants in the community-maintained <a rel=\"external\" href=\"https:\/\/github.com\/ad-si\/nix-companies#consultants\">nix-companies<\/a> directory.<\/p>\n<p>What we help teams with:<\/p>\n<ul>\n<li>Adopting Nix or NixOS in an existing infrastructure or codebase<\/li>\n<li>Reproducible builds and dev environments with flakes<\/li>\n<li>CI\/CD pipelines built on Nix<\/li>\n<li>Troubleshooting and ongoing production support<\/li>\n<\/ul>\n<p>If you're evaluating Nix or NixOS for production, or already depend on it and want an experienced partner, <a href=\"https:\/\/atvari.eu\/contact\/\">get in touch<\/a>. We'd love to help.<\/p>\n<p>\ud83d\udc49 <a rel=\"external\" href=\"https:\/\/nixos.org\/community\/commercial-support\/\">See the full NixOS commercial support list<\/a><\/p>\n"},{"title":"We've signed The European Social Stack declaration","published":"2026-08-14T00:00:00+00:00","updated":"2026-08-14T00:00:00+00:00","author":{"name":"Felix Schr\u00f6ter"},"category":[{"@attributes":{"term":"announcement"}},{"@attributes":{"term":"digital-sovereignty"}}],"link":{"@attributes":{"rel":"alternate","type":"text\/html","href":"https:\/\/atvari.eu\/blog\/european-social-stack\/"}},"id":"https:\/\/atvari.eu\/blog\/european-social-stack\/","content":"<p>\ud83c\uddea\ud83c\uddfa <strong>atvari GmbH has signed <a rel=\"external\" href=\"https:\/\/european.social\">The European Social Stack<\/a> declaration.<\/strong><\/p>\n<p>This is an open commitment to building a federated, interoperable, European-owned social ecosystem. As a software and cloud engineering consultancy focused on Rust, Nix \/ NixOS, and open source, this philosophy aligns deeply with how we operate.<\/p>\n<p>Key commitments include:<\/p>\n<ul>\n<li><strong>Eurobridge<\/strong>: bridging the Fediverse (ActivityPub) and the Atmosphere (AT Protocol)<\/li>\n<li>Privacy-first distributed identity aligned with the EU Digital ID Wallet<\/li>\n<li>Shared DSA\/DMA-compliant content moderation infrastructure<\/li>\n<li>An ecosystem where small builders can ship and users move freely<\/li>\n<\/ul>\n<p>Trillion-dollar incumbents dominate today. The answer isn't another walled garden. It's an ecosystem. Europe has both the technical talent and the regulatory framework to lead.<\/p>\n<p>We join roughly 100 organizations and 600 individuals in this effort.<\/p>\n<p>\ud83d\udc49 <a rel=\"external\" href=\"https:\/\/european.social\/#signatories\">See the full list of signatories<\/a><\/p>\n"},{"title":"Hello World!","published":"2026-08-14T00:00:00+00:00","updated":"2026-08-14T00:00:00+00:00","author":{"name":"Felix Schr\u00f6ter"},"category":{"@attributes":{"term":"announcement"}},"link":{"@attributes":{"rel":"alternate","type":"text\/html","href":"https:\/\/atvari.eu\/blog\/hello-world\/"}},"id":"https:\/\/atvari.eu\/blog\/hello-world\/","content":"<p><strong>atvari GmbH is alive!<\/strong> \ud83e\udd73 We officially opened for business earlier this month, and today we're launching our new website.<\/p>\n<p>atvari is a software and cloud engineering consultancy based in L\u00fcneburg, Germany, working with clients worldwide. We help teams design, build, and operate secure, scalable, and easy-to-maintain systems, offering software &amp; cloud architecture, custom software engineering, cloud engineering, and DevOps consulting, with particular depth in Rust and the Nix ecosystem.<\/p>\n<p>After 11+ years building cloud-native systems for startups and larger businesses, I wanted to offer that experience directly to teams who need it, without the overhead of a big consultancy.<\/p>\n<p>I'm also an active <a rel=\"external\" href=\"https:\/\/github.com\/NixOS\/nixpkgs\">Nixpkgs<\/a> contributor, maintainer, and committer, and I care deeply about digital sovereignty: building on open, auditable foundations instead of black boxes, so the systems we ship are secure and reproducible by design.<\/p>\n<p>This is only the beginning. Follow along here or on <a rel=\"external\" href=\"https:\/\/www.linkedin.com\/company\/atvari\">LinkedIn<\/a>, <a rel=\"external\" href=\"https:\/\/bsky.app\/profile\/atvari.eu\">Bluesky<\/a>, or <a rel=\"external\" href=\"https:\/\/fosstodon.org\/@atvari\">Mastodon<\/a> for updates. We already have an interesting partnership in the works, more on that soon.<\/p>\n<p>If you need help with Rust, Nix, or software &amp; cloud engineering more generally, <a href=\"https:\/\/atvari.eu\/contact\/\">get in touch<\/a>, we'd love to hear from you.<\/p>\n<p>\u2014 Felix Schr\u00f6ter, Founder<\/p>\n"}]}