Open Huge CSV Files Instantly 100GB+ CSV Viewer
Data.olllo is the fastest local tool to open, explore, and analyze huge CSV files or large datasets—100% offline, with no coding and no cloud. A perfect Excel alternative for big data files.
- Best way to open huge or large CSV files on your desktop
- Open 100GB+ CSVs instantly—no RAM bottleneck
- Visualize & filter millions of rows in real time
- Convert CSV to HDF5 for blazing-fast analytics
- No coding, no cloud, no data limits
- 100% local: your data stays private
Lightning-Fast Loading
Open huge or large CSV files (100GB+) in seconds. No freezing, no crashing—just pure speed.
Instant Visual Analytics
Filter, chart, and explore millions of rows with a click. No code, no formulas—just insight.
100% Private & Offline
Your data never leaves your device. No uploads, no leaks—enterprise-grade privacy by default.
Break Excel’s Limits
No 1M row cap. Analyze datasets Excel can’t touch—right on your desktop.
No Cloud, Keep Updating
Upgrade anytime. No forced cloud, no hidden fees. You’re in control.
Why Choose Data.olllo?
- No more Excel crashes: Open files Excel can’t handle—100GB, 200GB, or more.
- No cloud, no risk: All processing is local. Your data is never uploaded or shared.
- No code required: Point-and-click interface. Instantly filter, split, and chart.
- Simple subscription: Affordable monthly or yearly plans. Cancel anytime—your data always stays private.
Ready to Break Free from Excel’s Limits?
Join thousands of data professionals who trust Data.olllo for their biggest CSV challenges. Try it risk-free and experience the future of offline data analytics.
Get Data.olllo NowFAQ: How do I open a 100GB CSV without crashing?
Q: How can I open a 100GB CSV file offline without crashing my computer?
A: Data.olllo uses memory-mapped, multi-threaded I/O and HDF5 conversion to load huge CSVs with minimal RAM. No 1M row limit, no cloud, no risk—just pure speed and privacy.