UNVELLEvolving operations
through technology
UNVELL Inc. supports your business with high-quality software components and enterprise systems, anchored by our flagship ReoGrid product.
Across Industries
Our software components and engineering capability solve challenges across a broad range of industries.
Finance & Insurance
Streamlined reporting and calculation workflows powered by our spreadsheet components.
Manufacturing
Data visualization components for production control and quality management systems.
Public Sector
Building and operating planning and budgeting systems for local governments.
IT & Development
Developer-focused components and APIs that accelerate application development.
Products & Services
The software products UNVELL delivers
ReoGrid™
.NET Spreadsheet Component
A lightweight, high-performance Excel-like spreadsheet component for WinForms, WPF and Avalonia, running on Windows, macOS and Linux. Deployed widely in enterprise systems including financial institutions.
- Trusted in business systems for finance, manufacturing, and the public sector
- Used in 12+ countries; 180,000+ NuGet downloads
- Highly customizable to fit any business application
ReoGrid Web™
Canvas-based High Performance Spreadsheet
A high-performance spreadsheet component that runs in the browser. Canvas-based rendering delivers smooth, native-like spreadsheet capabilities for your web applications.
- Canvas rendering for fast, smooth interaction
- Framework-agnostic — works with React, Vue, Angular and more
- Excel-compatible formula engine, cell formatting, and charts
- Flexible licensing from a free Lite edition through Enterprise
Lite
Free
Pro
Business / 3 domains
Enterprise
Business / 30 domains
F-2 MISSIONS
An iOS flight simulation with a real aircraft's feel
No checklists, no switch panels — put a finger down and you are flying. Real-world terrain at true 1:1 scale, flown at real speeds and altitudes, across 15 missions.
Visit Official Site
Balloon Journey Japan
A gentle hot air balloon flight simulator for iOS, set in the real Japan
Burn to rise, vent to sink — that is the whole of it, and the wind at the height you pick does the rest. Japan from a wicker basket at 800 metres: snow ridges, cloud seas, river valleys and town lights, all at full size. Free on the App Store.
Visit Official Site
Esugoi
A drawing app that turns sketches into art with AI
Draw with a finger or Apple Pencil, tap once, and your doodle becomes a colorful illustration. The transformation can be saved and shared as a video.
Visit Official Site
VideoTagger™
Efficient Video Tagging & Management
Efficient tagging and management for video collections. Search and extract videos by theme with ease — free to use, with no account required.
Visit Official Site
Kyorimemo
An iOS app for tracking vehicle mileage with ease
Just enter your odometer reading — mileage is calculated and recorded automatically. Ready for daily reports, fleet management, expenses, and tax filings.
Visit Official Site
J-Plan Pro™
Project Planning System for Local Governments
Centralized management of multi-year project budgets and outcomes. Visualization and analytics support optimal project planning.
Visit Official SiteNews
The latest from UNVELL
Balloon Journey Japan, a Hot Air Balloon Flight Simulator for iOS, Now Released
UNVELL Inc. has released Balloon Journey Japan, a hot air balloon flight simulator for iOS, on the App Store. Burn to rise, vent to sink — two controls, and the wind at the height you choose decides your course. The stage is Japan at full size, and the balloon keeps flying while the app is closed.
ReoGrid V5 for Avalonia Released — A High-Performance Spreadsheet Component That Runs on Mac and Linux
UNVELL Inc. has released ReoGrid V5 for Avalonia, bringing its .NET spreadsheet component to Windows, macOS and Linux. The same code and the same project run on all three desktops. Built by using the ReoGrid V5 core engine as it stands, it inherits V5's memory design (16.4 bytes per cell, an 18.2x difference against the previous generation), its full-virtualization performance and its Excel-compatible formatting, and supports IME text entry.
ReoGrid V5 Released — Full Virtualization on Line One, and a Million-Row Sheet That Paints in Under a Millisecond
UNVELL Inc. released ReoGrid V5, the next generation of its spreadsheet component for .NET, on August 25, 2026. Rather than an extension of V4, it is a next generation rebuilt from the core, with full virtualization placed on line one of the design: a frame costs the same ~6.5 ms at a hundred thousand rows and at a million, and the viewport read takes 30.4 µs while allocating zero bytes.
UNVELL Inc.
UNVELL Inc. develops software guided by the philosophy "Keep Simple, Keep Smart" — solving problems simply and effectively.
From our flagship ReoGrid spreadsheet component, strong in large-scale data visualization, to enterprise systems for finance and production management, and on to consumer applications, we deliver valuable software across a wide range of domains.
- .NET Component Development
- Enterprise & SaaS Systems
- Algorithm Development
- CG & 3D Rendering
Articles
Technical articles and product updates
Balloon Journey Japan Released — Own a Balloon and Ride the Wind Across the Real Japan
UNVELL Inc. has released Balloon Journey Japan, an iOS game, on the App Store. You own a balloon and fly it over a Japan built from real elevation data. There are only two controls — burn and vent — and because the wind blows a different way at every height, choosing the right altitude is how you choose your destination. The balloon keeps flying while the app is closed. Free to play, with no ads.
A High-Performance Spreadsheet Component That Runs on Mac and Linux — ReoGrid V5 for Avalonia
ReoGrid V5 now supports Avalonia. The same code and the same .NET project run on Windows, macOS and Linux. This is a sibling rather than a port — it shares one core engine with the WinForms and WPF builds, so the million-row performance and the Excel-compatible formatting come across intact on all three operating systems. Japanese and CJK input via IME is supported.
ReoGrid V5 Released — Full Virtualization on Line One, Making a Million Rows Ordinary
ReoGrid V5 is here — a next generation rebuilt from the core rather than an extension of V4. Full virtualization sits on line one of the design instead of arriving as a late optimization, so a sheet takes the same ~6.5 ms to paint a frame whether it holds a hundred thousand rows or a million. What sets the workload is the range you can see, not the volume of data behind it.
Contact Us
Questions, feedback, or partnership inquiries — please get in touch.
By contacting us you agree to our Privacy Policy.