The best free alternative to CrossOver is Wine, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to CrossOver and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to CrossOver are WinBoat, Lutris, Proton and PlayOnLinux - PlayOnMac.
Compatibility layer enabling Windows games on Linux via Steam Play, featuring advanced video playback, FSR integration, Nvidia CUDA support, raw input, per-game fixes automation, upstream Wine patches, frequent updates, wine-staging patches, and open-source maintenance.
WineBottler is an App to manage and wrap your Windows apps into convenient OS X apps. WineBottler helps you with running Windows programs on OS X.
A wrapper that does winetricks things for Proton enabled games, requires Winetricks.
Phoenicis is a graphical front-end for Wine, a tool to help Linux and Mac users run games and programs for Windows. The future of PlayOnLinux and PlayOnMac.
Pegasus is a graphical frontend for browsing your game library (especially retro games) and launching them from one place. It's focusing on customizability, cross platform support (including embedded devices) and high performance.
Q4Wine is a qt4 GUI for wine that will help you manage wine prefixes and installed applications
Install and manage GE-Proton, Luxtorpeda & more for Steam and Wine-GE & more for Lutris with this graphical user interface.
Steam emulator that emulates steam online features. Lets you play games that use the steam multiplayer APIs on a LAN without steam or an internet connection.
Using Wineskin technology, Porting Kit is a PaulTheTall.com app that can install games and apps compiled for Microsoft Windows® in Mac OS X. It has access to a server where we store WSI files for more than 300 games, which can be installed by any Porting Kit user.
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It's much more complicated than Crossover. CrossOver is simple to use and WineBottler is much more complicated