Open-source alternatives to BoilR

The most feature-rich free astronomy software

Memory training application

DOSBox Staging is a modern continuation of DOSBox — your existing configurations will continue to work, and you will have access to many advanced features.

DOSBox-X is an open-source DOS emulator for running DOS games and applications.

A Fresh Way to Do Statistics

Digital logic design tool and simulator

Open source re-implementation of RollerCoaster Tycoon 2

OpenTTD is a transport simulation game based upon the popular game Transport Tycoon Deluxe, written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it with new features.

Easy to learn, funny to play! With PokerTH you can play the popular texas holdem poker game. Try your skills against the computer opponents, and find many friends to play with in the online games.

An Open Source Minecraft launcher with the ability to manage multiple instances, accounts and mods.

Minecraft launcher

PlayStation 4 emulator for Windows, Linux and macOS written in C++

A free open source planetarium for your computer.

A multi-platform launcher for your anime games

Multi functional app to find duplicates, empty folders, similar images etc.

A free open-source voxel game engine with easy modding and game creation.

Graphical program used to map keyboard buttons and mouse controls to a gamepad. Useful for playing games with no gamepad support.

ares is a cross-platform, open source, multi-system emulator, focusing on accuracy and preservation.

A sandbox-style space exploration game.

Create book from markdown files. Like Gitbook but implemented in Rust.

JOSM is an extensible editor for OpenStreetMap (OSM) for Java 17+

Single-player roguelike videogame.

A Super Nintendo (SNES) emulator focused on performance, features, and ease of use.

Interactive whiteboard for schools and universities

SuperTux is a open-source classic 2D jump'n run sidescroller game in a style similar to the original Super Mario games.

Warzone 2100, released in 1999 and developed by Pumpkin Studios, was a ground-breaking and innovative 3D real-time strategy game.

XIVLauncher (abbreviated as XL) is a faster launcher for Final Fantasy XIV, with various available addons and enhancements to the game!

Dungeon Crawl Stone Soup is a free and open source roguelike computer game, which is the actively community-developed successor of the 1997 roguelike game Linley's Dungeon Crawl, originally programmed by Linley Henzell.

OpenRA modernizes the classic Command & Conquer real time strategy games.

RuneLite is a free, open source OldSchool RuneScape client.