BigData for Windows Beta Pro only
The full viewer as a desktop app. Double-click a log to open it, work with no connection, and get updates automatically. It is a beta: stable enough for daily use, still changing quickly.
An AllDataLogs Pro membership is required
BigData for Windows is part of AllDataLogs Pro. Anyone can download the installer, but it needs an active Pro membership to open a log. You sign in the first time you run it, and it checks your membership once online; after that it works offline for up to 30 days at a stretch.
Signing in with an account that has no membership shows a screen with Start Pro and Manage subscription rather than a dead end, so nothing is wasted if you download it first and decide later.
Download the installer What's new Installation help
Latest version 0.1.44, published 2026-09-10. Download BigData-Setup-0.1.44.exe from that page. Windows 10 or 11, 64-bit, and an AllDataLogs Pro account to open logs.
Windows will ask you to approve it by hand
The installer is not code-signed yet, so Windows SmartScreen shows “Windows protected your PC” the first time you run it. That is expected, and it is not a virus warning.
Click More info, then Run anyway. Your browser may also hold the download with a Keep or Keep anyway button, for the same reason.
Code signing is in progress. Once it is live, the publisher name appears instead of “Unknown publisher” and the warning goes away.
What Pro gets you here
- Logs open by double-click: .hpl, .ld and .dl are registered to BigData.
- Everything works offline once activated, for up to 30 days between checks.
- History of the logs you have opened, on this PC and across your devices.
- Layouts, dashboards and histogram tables that sync to your account.
- The whole manual built in, on F1.
Plus everything Pro adds in the browser: histogram tables, math channels, custom dashboards, comparing runs and logs up to 250 MB. The full list
Installing
- Installs for your Windows user only, so it never asks for an administrator password.
- Sign in once with your alldatalogs.com account to activate.
- Updates download in the background and ask before restarting.
- Uninstalling leaves your layouts and settings in place.
In version 0.1.44
- Fixed The cursor line now has its own layer over each graph, so moving it no longer redraws the traces. On a big log with four graphs that alone was about forty milliseconds a frame; the line itself is now under a fifth of a millisecond and keeps up with the pointer, and it stays welded to the data while you drag a graph.
- Fixed The live values in the channel list are only refreshed for the rows on screen, and on a log with hundreds of channels they refresh about eighteen times a second instead of fighting the cursor for every frame. They always settle on the exact value once the pointer stops, and a normal-sized log still updates them every frame.
No membership yet? The same viewer runs free in your browser at alldatalogs.com/app for logs up to 15 MB, with 10 things a membership adds.