The intention of this list is to raise awareness of this technology's usage in popular software, as well as give people informed alternatives that they can reach for when they want to make decisions for themselves. This is not a list created so you can go and give these projects trouble for their decision. If you want to file a complaint about it with them, we consider that acceptable but ask that it be done respectfully and constructively.
> This is a fork of a repo by the same name maintained by the @gen-ai-transparency org on Codeberg. If they make their repo available again, we will contribute back.
| Chromium/Blink engine | [LibreWolf], [Zen], [Servo] | Presence of [.claude](https://github.com/chromium/chromium/tree/aab503953a7f271aad675ef8a38f3108d9c2a0f0/.claude), [.gemini](https://github.com/chromium/chromium/tree/aab503953a7f271aad675ef8a38f3108d9c2a0f0/.gemini) and [.agents](https://github.com/chromium/chromium/tree/aab503953a7f271aad675ef8a38f3108d9c2a0f0/.agents) |
| Firefox | [LibreWolf], [Zen], and several other forks; [Servo] | [Blog post collecting details](https://alextheward.com/blog/mozilla_is_now_an_ai_company/) |
| [Ladybird](https://github.com/LadybirdBrowser/ladybird) | [LibreWolf], [Zen], and several other forks | [President of company/core developer discussing Rust language adaption using AI agents.](https://x.com/awesomekling/status/2025898614631915708) [Associated blog post](https://ladybird.org/posts/adopting-rust/) |
| [`yash`](https://magicant.github.io/yash/) | `dash` shell, but there are no other major shells fully targeting POSIX | [Assigns and auto-reviews MRs with LLMs](https://github.com/magicant/yash/pull/217#issue-3699124790) |
| [RawTherapee](https://github.com/RawTherapee/RawTherapee/) | Stick to version 5.12 | Use Copilot for review [PR7518](https://github.com/RawTherapee/RawTherapee/pull/7518#pullrequestreview-3348449593), [PR 7435](https://github.com/RawTherapee/RawTherapee/pull/7435#pullrequestreview-3059697445), [PR 7378](https://github.com/RawTherapee/RawTherapee/pull/7378#pullrequestreview-2969042638) and code changes [commit c4b0400](https://github.com/RawTherapee/RawTherapee/commit/c4b04007107a426dd7011002e8085aa6f398ab60) |
| [`cargo-nextest`](https://github.com/nextest-rs/nextest) | Just use `cargo test` | [`CLAUDE.md` and `AGENTS.md` in repository](https://github.com/nextest-rs/nextest/commit/3853279b41cc4a81f82e26fd88fac3bf85054af5) |
| [`jujutsu`](https://www.jj-vcs.dev/latest/) | Continue using `git` itself | [A core dev occasionally uses Claude to generate local test cases.](https://codeberg.org/gen-ai-transparency/open-slopware/src/branch/main/img/Screenshot%202026-01-08%20at%2016.13.46.png), [(Discord link)](https://discord.com/channels/968932220549103686/1458877549034864703) |
| [`just`](https://just.systems/) | A Make implementation | Lists an [MCP server in its User Manual](https://just.systems/man/en/model-context-protocol.html). |
| [`oh-my-posh`](https://github.com/JanDeDobbeleer/oh-my-posh/) | | [`AGENTS.md` file in main repository](https://github.com/JanDeDobbeleer/oh-my-posh/commit/0ca76357a608f2e4043e10fe9591709ca554d75d) |
| [`oh-my-bash`](https://github.com/ohmybash/oh-my-bash) | | [All PRs are reviewed with "Qodo"](https://github.com/apps/qodo-free-for-open-source-projects) [Example PR](https://github.com/ohmybash/oh-my-bash/pull/729) |
| [`ohmyzsh`](https://github.com/ohmyzsh/ohmyzsh) | | [Added Claude and Grok as search engines](https://github.com/ohmyzsh/ohmyzsh/pull/13222); [explicitly allows LLMs](https://github.com/ohmyzsh/ohmyzsh/blob/master/CONTRIBUTING.md#a-note-on-ai-assisted-contributions); contains commits from [Claude](https://github.com/ohmyzsh/ohmyzsh/commit/99b243b9a98576037c864ff115b1fe96621fec8a) and [Copilot](https://github.com/ohmyzsh/ohmyzsh/commit/8c5a60644a2a93fb6b7d76ec7a5598f99b426cf0) |
> A lot of Make implementations exist that are very fit to replace other task runners.
> In fact so many were produced, that one can just look up "GNU Make alternative" and find >10 results to pick the one they like the best. Also see: [wikipedia/Make](https://en.wikipedia.org/wiki/Make_(software))
| [Julia](https://julialang.org/) | An older version of Python (w/ appropriate scientific libraries) | [`AGENTS.md` in main repository](https://github.com/JuliaLang/julia/pull/58561), [PRs "written by Claude"](https://github.com/JuliaLang/julia/pulls?q=is%3Apr+written+by+Claude) | |
> Suggestions for alternative programming languages are necessarily more complex than many other categories considered here, as that's one of the core technical choices to be made when starting a new software development project.
> Depending on your needs and technical concerns, you may find any number of different alternative languages useful. For example, when considering alternatives to .NET, Java or Scala may be interesting candidates from the perspective of being similar VM-based frameworks, while Rust might be an interesting alternative in other ways.
| [Zed](https://zed.dev) | [Lapce](https://lap.dev/lapce/), [Gram](https://codeberg.org/GramEditor/gram) (removes AI integration, codebase may still contain AI code), other popular editors like emacs, etc | They prominently advertise genAI features as a core part of their product. See their website. | There's a killswitch to disable genAI features entirely, but it's likely the code itself is still heavily LLM-authored. |
| [VS Code](https://code.visualstudio.com/) | [VS Codium](https://vscodium.com/)* removes the AI _features_ from VS Code | [It's literally their main advertising tagline](./img/vscode.png), and they publicly use LLMs in [their public repository](https://github.com/microsoft/vscode/pulls). Most AI "features" are enabled by default, and some cannot be disabled. | *VS Codium is still written with LLMs since Microsoft owns it |
| [VIm](https://www.vim.org/) | [emacs](https://www.gnu.org/software/emacs/), [EVi](https://codeberg.org/NerdNextDoor/evi) and other forks of VIm prior to March 20th 2024, build v9.1.0190 or commit [`8950bf7f8b85c1287d4e696965d88091fcc60594`](https://github.com/vim/vim/commit/8950bf7f8b85c1287d4e696965d88091fcc60594). | [Thread on Hachyderm.io where screenshots show that the lead maintainer, chrisbra, uses Claude for VIm](https://hachyderm.io/@AndrewRadev/116175986749599825) including [commits featuring Claude in the VIm repo](https://github.com/search?q=repo%3Avim%2Fvim+claude&type=commits&s=committer-date&o=desc) and [other potential LLM code from a contributor as early as March 2024.](https://github.com/vim/vim/issues/18800#issuecomment-3568099543) | This also affects neovim and many other forks. |
| [espeak-ng](https://github.com/espeak-ng/espeak-ng) | [flite](http://cmuflite.org/) | [Dev uses copilot for review](https://github.com/espeak-ng/espeak-ng/pull/2328#pullrequestreview-3559773058) and [is setting up copilot instructions](https://github.com/espeak-ng/espeak-ng/pull/2302) | espeak still exists, but is heavily outdated and very bad from a modern standpoint, so it cannot be considered as an alternative. `flite` users may also wish to install `speech-dispatcher-flite`. |
| [FastLED](https://fastled.io/) | | [`.claude` and `.cursor` folders in main repository](https://github.com/FastLED/FastLED/commit/d0d3627eded2e83f52a16763950de94e70c35c4e) |
| [`facet`](https://github.com/facet-rs/facet) | Use more specific deserialization libraries and avoid macros that slow things down anyway. [`serde`](https://serde.rs) itself is [tainted by its Palantir-defending author](https://archive.ph/fe9g5). [`nanoserde`](https://github.com/not-fl3/nanoserde) could be suitable for certain use cases. | [Core developer openly uses LLMs for library dev](https://archive.ph/YhcOh) | |
| [`ratatui`](https://github.com/ratatui/ratatui) | [`iocraft`](https://github.com/ccbrown/iocraft) and [`cursive`](https://github.com/gyscos/cursive). [`console`](https://github.com/console-rs/console) and its family of libraries may also be enough for some use cases. | [Core developer has stated their use of AI for rust code](https://github.com/ratatui/ratatui/discussions/2201) | |
Note that Python is itself tainted; see [the Programming Languages section](#programming-languages).
| Name | Alternative(s) | Evidence | Notes |
|---|---|---|---|
| [Requests](https://github.com/psf/requests) | [`urllib.request` in Python Standard Library](https://docs.python.org/3/library/urllib.request.html) | Contains [commits from Claude](https://github.com/psf/requests/commit/b2a1d33f571518ca9a6148e7da787cc5827f897a) | |
| [Chardet](https://github.com/chardet/chardet) | An older version | [Core developer used Claude to launder LGPL-licensed code to Expat/MIT license](https://github.com/chardet/chardet/issues/327) | |
| [`tailwindcss`](https://github.com/tailwindlabs/tailwindcss) | [`twind`](https://github.com/tw-in-js/twind) | [Sponsorship page states explicitly that the founder uses AI to write code and even sells access to his "Cursor/Claude/AGENTS.md rules"](https://tailwindcss.com/sponsor) | |
| [UPBGE 0.5](https://upbge.org) | UPBGE 0.36.1 seems to be slop-free, [Godot](https://github.com/godotengine/godot) | [0.5 release notes state the use of AI in plain language](https://github.com/UPBGE/upbge/wiki/Release-notes-version-0.50#b-implementation-technique-and-limitations) |
| [Calibre 8.16.2](https://calibre-ebook.com) | [BookLore](https://booklore.org/)<br /> [Clbre](https://github.com/grimthorpe/clbre), a Calibre fork without AI<br /> [Arcalibre](https://codeberg.org/rereading/arcalibre), a Calibre hard-fork from before AI features | [Added "Discuss selected book(s) with AI" feature](https://github.com/kovidgoyal/calibre/blob/master/Changelog.txt)
| [Ghost](https://ghost.org/) | [WriteFreely] | Include configurations for [Claude](https://github.com/TryGhost/Ghost/tree/main/.claude) and [cursor](https://github.com/TryGhost/Ghost/blob/main/.cursor/rules/yarn.mdc); images on website seem generated |
| [Bludit CMS](https://www.bludit.com/) | [Jekyll](https://jekyllrb.com/) maybe? No signs of AI in the repo but also [no clear statement](https://talk.jekyllrb.com/t/ai-usage-in-the-jekyll-project/10269) provided | [Coding with Claude and reviewing by Code Rabbit](https://github.com/bludit/bludit/pull/1642) |
| [Nextcloud](https://nextcloud.com/) | [seafile](https://github.com/haiwen/seafile) for file storage and syncing only (not a complete worksuite replacement) | [✨ Nextcloud Assistant](https://nextcloud.com/assistant/) (can be disabled)<br />Nextcloud Desktop has [AGENTS.md](https://github.com/nextcloud/desktop/blob/master/AGENTS.md) |
| [SeaweedFS](https://seaweedfs.com/) | [Garage] for S3 api + [JuiceFS](https://juicefs.com/en/) for the NFS mounts and K8s CSI driver<br />[Rook/Ceph](https://rook.io/) | Using [Gemini and coderabbitai in PRs](https://github.com/seaweedfs/seaweedfs/pull/7996). |
| [KeepassXC](https://keepassxc.org/) | Use official [KeePass 2](https://keepass.info/download.html). It is a .NET application, but [Mono](https://keepass.info/help/v2/setup.html#mono) or [Wine](https://keepass.info/help/v2/setup.html#wine) can be used for Linux, MacOS, BSD, ...<br />[KeePassXC 2.7.9](https://github.com/keepassxreboot/keepassxc/releases/tag/2.7.9) was released before the statement, and was awarded 3 year security Visa by the French National Cybersecurity Agency ([ANSSI](https://cyber.gouv.fr/)) for a First-level Security Certification (CSPN), valid in France and Germany, under report No. ANSSI-CSPN-2025/16 ([archive.org](https://web.archive.org/web/20251128131437/https://cyber.gouv.fr/produits-certifies/keepassxc-version-279), [certificate](https://messervices.cyber.gouv.fr/visas/ANSSI-CSPN-2025-16-certificat.pdf)). | Explicitly stated in [official blog post](https://keepassxc.org/blog/2025-11-09-about-keepassxcs-code-quality-control/).<br />Use Copilot to generate PRs: [Example 1](https://github.com/keepassxreboot/keepassxc/pull/12588), [Example 2](https://github.com/keepassxreboot/keepassxc/pull/12314), [Example 3](https://github.com/keepassxreboot/keepassxc/pull/12199). |
| [Bluesky](https://bsky.app) | [Mastodon](https://joinmastodon.org/), [GoToSocial](https://codeberg.org/superseriousbusiness/gotosocial) | [CTO discusses using Claude in development](https://bsky.app/profile/pfrazee.com/post/3luyb3jcbv52d) |
| [Actual](https://actualbudget.org/) | | Include [AGENTS.md](https://github.com/actualbudget/actual/blob/master/AGENTS.md); [Used Open Collective funds for Cursor subscription](https://opencollective.com/actual/expenses/277324) |
| [Firefly III](https://firefly-iii.org) | | Include [agents.md](https://github.com/firefly-iii/firefly-iii/blob/main/agents.md) |
| [Headscale](https://github.com/juanfont/headscale) | netbird, nebula | [AGENTS.md](https://github.com/juanfont/headscale/blob/main/AGENTS.md) and [.claude/agents](https://github.com/juanfont/headscale/tree/main/.claude/agents) added to repo, commits/PRs include "assisted by claude" notes ([example](https://github.com/juanfont/headscale/pull/3050), there are plenty more) |
| [Linux Kernel](https://kernel.org/) | BSD? Honestly this one's tough | [Maintainers are explicitly trying out the technology and considering LLM-based reviews](https://lwn.net/Articles/1041694/) |
LLMs are often trained on, and thus prone to, regurgitate either completely, or in-part, chunks of code that are licensed under terms which have specific legal requirements that a sloperator may not understand or even be aware of when making a contribution. Regardless of this ignorance, it falls to the repo's owner to comply with the terms of any and all licensed code integrated into their project.
Legal, copyright and ethic problems arise especially with copyleft licenses such as (A/L)GPL. With the "help" of AI the copyleft code may be "license-washed" very easily.
There are ongoing problems with AI "license-washing" in the FOSS world:
*`chardet` --- switched from LGPL to MIT license without asking all
AI companies use data from across the web for training their models, most often without the website owners' and users' consent. Big tech companies like Google and Meta are scraping data from the users of major FOSS projects, such as Mastodon, WordPress, and other AcitivityPub-powered and self-hosted software.
* In 2023, [the Washington Post published a list of sources in Google's C4 data set](https://archive.ph/eehKq). A multitude of fediverse instances and personal sites were included. The fediverse is known for its userbase being major proponents of privacy and opt-in consent, making this especially jarring for those who have chosen to use decentralized social media for control over their data.
* In 2025, [a similar leak of Meta's sources was published](https://archive.ph/NZlf3). Meta's list demonstrates how their integration of ActivityPub into their Threads software has enhanced their ability to mine content without authorization. Threads is widely blocked in some parts of the fediverse, but their scraping of server CDNs has allowed them to get around that. Notably, both the CDN domains of the managed hosting services masto.host and fedi.monster are included in the list; large servers like mastodon.art, which is hosted by the former and has many artists who've left sites like DeviantArt and others due to their AI scraping of user content, had [media unknowingly scraped](https://mastodon.art/@Curator/115022115346692178).
FOSS projects listed in this repo are using tooling that blatantly disregards licensing and violates even the most basic of Code of Conducts, making said tools antithetical to FOSS' purpose.
* [copilot litigations](https://githubcopilotlitigation.com/), [IEEE article explaining how we go here](https://spectrum.ieee.org/ai-code-generation-ownership)
* [broader lawsuits against AI companies tracker ](https://chatgptiseatingtheworld.com/2025/11/02/tracker-of-tort-lawsuits-v-ai-companies/)
To start learning a bit more, you can checkout the wikipedia page on [Environmental impact of artificial intelligence](https://en.wikipedia.org/wiki/Environmental_impact_of_artificial_intelligence#Individual_level). We're very open to people contributing other explanations, links, and resources to learn more about this.
Vibe coding / agentic workflows result in poorer code quality, and relaxed oversight practices. These effects may be compounded by the common practice of using additional LLM-based tooling to provide code-reviews.
* [How I Dropped Our Production Database and Now Pay 10% More for AWS](http://archive.today/2026.03.06-144058/https://alexeyondata.substack.com/p/how-i-dropped-our-production-database)
* [Claude Tested Everything Except the One Thing That Mattered (Ai agent refuses to follow explicit instructions to test `createPost()` in increasingly erratic ways)](http://archive.today/2026.03.09-201135/https://christophermeiklejohn.com/ai/claude/2026/03/08/claude-tested-everything-except-the-one-thing-that-mattered.html)
* [Amazon calls engineers for a “deep dive” internal meeting to discuss “GenAI”-related outages](https://ghostarchive.org/archive/3TfgF)
* [Meta Security Researcher's AI Agent Accidentally Deleted Her Emails](http://archive.today/2026.02.26-153034/https://www.pcmag.com/news/meta-security-researchers-openclaw-ai-agent-accidentally-deleted-her-emails)
* [Moltbook’s ‘vibe-coded’ breach is the future of security failures](https://thehill.com/opinion/cybersecurity/5744310-ai-powered-security-risks/)
* [Wikipedia: Deaths linked to chatbots](https://en.wikipedia.org/wiki/Deaths_linked_to_chatbots)
* [AI chatbot pushed a teen to kill himself, a lawsuit against its creator alleges](https://apnews.com/article/chatbot-ai-lawsuit-suicide-teen-artificial-intelligence-9d48adc572100822fdbc3c90d1456bd0)
Having to deal with the onslaught of many LLM written pull requests and issues, causes real maintainer burnout that stagnates projects as maintainers become overwhelmed with half baked, poorly written, insecure code. Here's some examples:
* [Overrun with AI slop, cURL scraps bug bounties to ensure “intact mental health”](https://arstechnica.com/security/2026/01/overrun-with-ai-slop-curl-scraps-bug-bounties-to-ensure-intact-mental-health/)
* [Godot maintainers struggle with 'draining and demoralizing' AI slop submissions](https://www.theregister.com/2026/02/18/godot_maintainers_struggle_with_draining/)
* [An AI Agent Published a Hit Piece on Me (matplotlib)](http://archive.today/2026.02.19-045842/https://theshamblog.com/an-ai-agent-published-a-hit-piece-on-me/)
