A more optimistic homage to the slopware catalog https://alternativeto.net/lists/44427/slopware/, this list is designed to showcase projects, both FOSS and proprietary, which reject contributions from Generative AI LLM slop machines. The most pessimistic thing about this list is how short it is and how so many commonly used software solutions and websites are not included.
I have to give it up to the following sites for providing references:
There are a lot more projects on this list which I didn't include because they aren't on AlternativeTo (yet). I'll be adding more entries to this site (and removing those who fold to the AI overlords) on a regular basis. I'm including references, which are all first-hand declarations from the development teams for each entry to ensure items aren't included based on hearsay or conjecture.
Updated 10-2-2026
A free Git source code hosting service with the objective to give the open-source code that is running our world a safe and friendly home, and to ensure that code remains free and secure forever.
Apache CouchDB is a distributed, fault-tolerant and schema-free document-oriented database accessible via a RESTful HTTP / JSON API. It includes incremental map / reduce mechanics for queries and keeps data safe with an append-only datastore.
PouchDB is an open-source JavaScript database inspired by Apache CouchDB that is designed to run well within the browser.
Flask is a lightweight web application framework written in Python and based on the Werkzeug WSGI toolkit and Jinja2 template engine. There is no database abstraction layer, form validation, or any other components where third-party libraries already exist to provide common...
Beyond coding. We forge. Forgejo is a self-hosted lightweight software forge. Easy to install and low maintenance, it just does the job.
Gram is a powerful and modern source code editor. It features solid performance and is highly configurable, yet comes with batteries included out of the box. Gram supports many popular programming languages and file formats, and can use Zed extensions to support additional...
Jinja is a fast, expressive, extensible templating engine. Special placeholders in the template allow writing code similar to Python syntax. Then the template is passed data to render the final document.
Twisted is an event-driven network programming framework written in Python and licensed under the MIT License. Twisted projects variously support TCP, UDP, SSL/TLS, IP Multicast, Unix domain sockets, a large number of protocols (including HTTP, XMPP, NNTP, IMAP, SSH, IRC, FTP...
Avoyd Voxel Editor and Renderer Create, import, export and render large voxel worlds 3D art and rendering tool for voxel artists, map builders and game developers.
A refreshingly simple data-driven game engine built in Rust. Free and Open Source Forever!
Cataclysm: Dark Days Ahead is a roguelike set in a post-apocalyptic world. Surviving is difficult: you have been thrown, ill-equipped, into a landscape now riddled with monstrosities of which flesh eating zombies are neither the strangest nor the deadliest.
Experimental open-source emulator for Nintendo Switch, multi-platform, supporting AArch64/x86_64, advanced userspace emulation, and controller compatibility.
Explore other star systems. Earn money by trading, carrying passengers, or completing missions. Use your earnings to buy a better ship or to upgrade the weapons and engines on your current one. Blow up pirates. Take sides in a civil war.
Hi there! LÖVE is an awesome framework you can use to make 2D games in Lua. It's free, open-source, and works on Windows, Mac OS X, Linux, Android and iOS.
An open-source clone of the classic game 
Transport Tycoon Deluxe. It attempts to mimic the original game as closely as possible while extending it with new features.
Veloren is a multiplayer voxel RPG written in Rust. It is inspired by games such as Cube World, Legend of Zelda: Breath of the Wild, Dwarf Fortress and Minecraft.
»Decker is a multimedia platform for creating and sharing interactive documents, with sound, images, hypertext, and scripted behavior.
Open-source diagram editor with cross-platform support offering entity relationship, UML, flowchart, and network diagram creation with editable objects.
Dune 3D operates as a parametric 3D Computer-Aided Design (CAD) software. It provides users with the capability to sketch and constrain both in 2D and 3D dimensions. Furthermore, it allows for the addition of chamfers and fillets to designs.
Free open-source suite with advanced photo retouching, composition, batch processing, plugin extensibility, custom scripting, and wide file format compatibility.
Inochi creator is a framework for realtime 2D puppet animation. On this site you can find the reference implementation as well as the official tooling for creating and using Inochi2D puppets for VTubing.
A free, open-source painting program for professional artists offering customizable UI, 9 brush engines, layer support, and color management.
The GNU Health project provides the tools for individuals, health professionals, institutions and governments to proactively assess and improve the underlying determinants of health, from the socioeconomic agents to the molecular basis of disease.
Migraine Log lets you easily log your migraine attacks (or other headaches). It is built to make it as easy as possible, only requiring a date and the strength of the attack, while allowing you to optionally add details like what medications you took and notes about the attack.
Dillo is a multi-platform graphical web browser, known for its speed and small footprint, that is developed with a focus on personal security and privacy.
Multi-platform encrypted messenger supporting one-to-one and group chats, file and image sharing, decentralized open-source design, and ad-free nonprofit operation.
Fractal is a Matrix messaging app for GNOME written in Rust. Its interface is optimized for collaboration in large groups, such as free software projects.
Halloy is an open-source IRC client written in Rust, with the Iced GUI library. It aims to provide a simple and fast client for Mac, Windows, and Linux platforms.
Iceshrimp is a derivative of Misskey that has been offering practical solutions, enhancements, and improvements since 2023. It is designed to address user needs directly, focusing on delivering straightforward fixes and features that users find valuable.
Lobsters is a technology-focused link-aggregation site. The site is driven by 
Ruby on Rails with the source code being freely available for those seeking to create a site similar to Reddit or Hackernews.
Share, discover, and create short videos across the social web. An open-source alternative that puts creators and communities first, built on federated technology for true ownership and privacy.
Federated image sharing platform prioritizing privacy, safety, and user control, ad-free operation, no algorithms, open-source, and supports self-hosting.
PowerDNS is a DNS Server that runs on most Unix derivatives. PowerDNS features a large number of different backends ranging from simple BIND style zonefiles to relational databases and load balancing/failover algorithms. A DNS recursor is also included as a separate program.
selfoss is a multipurpose RSS reader and feed aggregation web application. It allows you to easily follow updates from different websites, social networks and other platforms, all in a single place. It is written in PHP, allowing you to run it basically anywhere.
Lightweight Android client for decentralized social networking, featuring material design, support for photo, video, emoji, lists, drafts, notifications, multiple themes and timelines.
Command line program that's a 
youtube-dl fork that downloads videos from YouTube and over 1000 sites. The main focus of this project is adding new features and patches while also keeping up to date with the original project.
Clojure is a dynamic programming language that targets the Java Virtual Machine (and the CLR ). It is designed to be a general-purpose language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for...
Open-source language emphasizing robustness, optimality, and clarity, integrates direct C library support, build system, modern error handling, and cross-compiling.
Overall, it's hard to restrict LLM contributions, since nothing stops a vibecoder from copying and pasting LLM generated nonsense into a pull request, but this list shows those who are making an effort to discourage the practise.
Feel free to add suggestions in the comments!
Comments
FluffyChat (a [matrix] client) can be added. From Contributing Guidelines:
Usage of LLMs to generate code or documentation is strictly prohibited.
Added!
Hi,
Nice work on the list!
I have one nit-pick – I would argue that Forgejo belongs more to the section “Code and App Repositories”, the difference being that Forgejo is self-hosted (Codeberg runs on Forgejo). Of course, one app can be added to multiple sections as well.
Thanks for the comment!
The list returned an error when I attempted to post forgejo into both categories so I left it in Development since it is a tool you can use to build a code repo around whereas codeberg is a repo built with it.
I saw your updates too: seeing nextcloud, tor-browser, and simplex in your updated list hit hard. :(