Searching for a version of the Unity Editor? While modern Unity versions (2017 and later) are strictly 64-bit, you can still download compatible older versions for free through the official archive. Where to Find the 32-Bit Download
If you are using a 32-bit machine, you can still access legacy versions for free through the official archive: : Visit the Unity Download Archive . Select Unity 5 : Navigate to the Unity 5.x tab. Unity 3d 32 Bit Download Free
Running the editor on a netbook or old Atom processor? Try these tweaks: Searching for a version of the Unity Editor
The 32-bit editor cannot address more than 4GB of RAM. Complex 3D scenes with high-res textures will cause crashes. Select Unity 5 : Navigate to the Unity 5
: This plan is completely free for individuals or small companies with less than $200,000 in annual revenue or funding No Expiration : You can use the Unity Personal plan