Deploy in 115+ regions with the modern database for every enterprise.
MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
Start Free
$300 in Free Credit Towards Top Cloud Services
Build VMs, containers, AI, databases, storage—all in one place.
Start your project in minutes. After credits run out, 20+ products include free monthly usage. Only pay when you're ready to scale.
IronCalc is a new, modern, work-in-progress spreadsheet engine and set of tools to work with spreadsheets in diverse settings. IronCalc is a lightweight, open-source computational engine designed for performing mathematical operations, formula calculations, and data-driven tasks.
C++ library for creating XLSX files for MS Excel 2007 and above.
...The main feature of this library is that it uses C++ standard file streams. On the one hand it results in almost unnoticeable memory and CPU resources consumption while processing (that may be very useful at saving a large data arrays), but on the other hand it makes unfeasible to edit data that were written.
Hence, if using this library the structure of the future report should be known enough.
The library is written in C++ with using STL functionality and based on the ZIP library (included), which has a free license:
http://www.codeproject.com/Articles/7530/Zip-Utils-clean-elegant-simple-C-Win32
This library is distributed under the terms of the zlib license:
http://www.zlib.net/zlib_license.html