Rector is an open-source tool that instantly upgrades and refactors any PHP code. It automates framework migrations, version bumps, and type coverage-saving teams countless hours. Your sponsorship keeps Rector free, maintained and free.

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I'm an open source R developer from Brazil. My specialty is in making financial and economic data available for everyone. You can find more details about my work at my [personal website](https://www.msperlin.com/blog/),

Hello, my name is Daniel and I am a software developer at Itau-Unibanco. I contribute to some Open Source projects focusing on Java/Jakarta EE.

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polyglot software engineer | rustlang enthusiast | co-organizer at @rust-meetup-munich | maintainer of @cargo-generate | creator of t-rec-rs and @steganogram 🦀

The Python Packaging Authority (PyPA) is a working group that maintains a core set of software projects used in Python packaging. The PyPA is also a fiscal sponsoree of the Python Software Foundation (PSF).

We maintain flutter_map, Flutter's №1 non-commercially aimed map client! Simple and easy to learn, yet completely customizable and configurable, it's the best choice for mapping in your Flutter app.

Managing developers at @slevomat by day, working on open source by night.

Open Sheet Music Display is a TypeScript based open source library that enables developers to build musicXML sheet apps. We need your support to keep making state of the art open source software for displaying digital sheet music.

F3D is open source and needs your support

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Daniel is an analyst who loves to code. Nights-and-weekends developing open source provided experience to transition to a professional software engineering position.

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Support AvaloniaUI in creating the best cross-platform UI framework for .NET.

Sponsor Linux Upskill Challenge

I'm a game dev who previously created Dead Cells, and I'm now going full-time solo :) I maintain various public tools for the game dev community, including LEd level editor, GameBase for Haxe and various libs.

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Support SquirrelJME, an open-source implementation of Java ME 8 that is capable of running mobile Java ME applications and older J2ME applications.