Flume for Windows
Two architectures and two installer formats. The builds are not code-signed, so Windows will have something to say about that.
Windows 10 or 11
Version 1.4.1, released 19 October 2026. Free and open source under Apache-2.0.
Downloads for Windows
SmartScreen will interrupt you
The Windows builds carry no code-signing certificate, so SmartScreen shows an “unrecognised app” panel with the Run button hidden behind More info. That is what an unsigned installer looks like on Windows — it is not a sign the download is damaged or that anything detected a problem. A certificate costs a few hundred pounds a year and this project does not have one yet.
EXE or MSI?
Take the .exe unless you have a reason not to — it is the ordinary installer, and it is what the update path assumes. The .msi exists for managed deployment, where something else is installing Flume on your behalf and wants a package it can script.
x64 or ARM64?
Almost every Windows PC is x64. Take ARM64 only if you know you have a Snapdragon or other ARM machine — a Surface Pro on ARM, for instance. The x64 build will run there under emulation, but the native one is meaningfully faster.