The last version of Ultimaker Cura that supported 32 bit Operation Systems was Cura 2.3.1 of 2016, which of course has a lot of items not yet in it and doesn't fit the demand of offering some update at worst from 2018.
32 bit support is starting to fade from support of projects, as 64 bit makes a lot of things much easier and faster and 32 Bit Windows likewise is pretty much a dead end branch with Windows 7 Support being discontiniued on January 14th 2020. For example the Slicer project says on their documentation of the May 2019 4.10 version: "We do not make 32 bit builds available."
Yet there is rescue with the Slic3r-Family!
Slic3r 1.3.0 is open source, availeable as 32 and 64 bit versions, and was released in November 2018, making it somewhat up to day. You need to customize a lot of settings in it, but it is after all quite a powerful slicer - for which you have to write your own Start Code, define your filament settings and machine.
Repetier Host 2.1.6 is likewise a 32 bit application. It's technically a console with slicing features and uses one of several engines to slice - including the Slic3r and Slic3r Prusa Edition engines, which run on 32 bit. In comparison to Slic3r I find its UI for placing items a little more user friendly. It does pull the settings from Slic3r.
Slic3r Prusa Edition/PrusaSlicer is a derivate of the Slic3r project. 2.2.9 was released December 2019. It too runs on 32 bit systems. It is, UI-wise, even more comfortable than Repetier Host and is somewhat similar to Ultimaker Cura 4.