XPlatform .NET UI framework (For best experience access this chat on Telegram https://t.me/Avalonia)

A cross-platform virtual tabletop for multiplayer card games

Haxe - The Cross-Platform Toolkit

Cross-platform, language-agnostic binary package manager

PySAL is an open source cross-platform library of spatial analysis functions written in Python. It is intended to support the development of high level applications for spatial analysis. https://us02web.zoom.us/j/84105444598

Shell-centric cross-platform MongoDB management tool

A cross-platform native backend for Haxe projects

EiskaltDC++ is a cross-platform program that uses the Direct Connect and ADC protocols

Cross-platform asychronous I/O

An easy to use cross-platform c++ GUI for SFML

A lightweight music player, cross-platform, written with Node.js, Electron and React.js. MENTION ME (@KeitIG) so I can get notifications of you messages)

An Open-Source Cross-Platform Patch Management tool.

An open source, cross-platform application to interface with the FreshRoast SR700

Daemon is a cross-platform frontend for the Pioneers in Engineering robotics control system. It's also the future.

A cross-platform virtual tabletop for multiplayer card games

High Fidelity cross-platform full stack manager.

Embeddable cross-platform chat for communities

Gisto is a Cross-platform snippets management desktop application that allows you and/or your team share code snippets fast and easily. Based on GitHub Gists Infrastructure which means you can use all your existing snippets by connecting your GitHub account! Gisto started as an attempt to fulfill the lack of a syntax highlighted and cloud synchronized code snippet solution. You may thing of Gisto as Evernote for code.

A cross-platform desktop tool to extract selected data from any webpage with predefined filters with one click.

StandAlone Async single-file cross-platform no-dependencies Unicode-ready Python3-ready Minifier for the Web.

Cross-platform C++ framework for developing high-level and fast applications

General cross-platform packages

Helping developers select a framework for cross-platform mobile development.

Web Player Cross-Platform

cross-platform music production software

NAnt2 is a free .NET build tool, updated and enhanced from original NAnt project. Easy to use even by non-programmers to automate their daily tasks.

A simple Eto.Forms cross-platform notes application.

a cross-platform drm-free media center for home theater computers

Cross-platform, Python-agnostic binary package manager