A standalone, portable Ada package for producing Excel spreadsheets
Javascript plugin to create web-based tables & spreadsheets
C++ library for creating XLSX files for MS Excel 2007 and above.
Tool to manage canteen, nursery and events registrations of a school.
Feature rich insurance quote & buy system for underwriters and brokers
Open Source Microfinance Suite
Python spreadsheet application
FreelancerBooks -Project Management for Freelancers and Agencies
Personal finance app to keep track of cash, income, expense and budget
Lays out dependencies (links) between Excel files in a visual graph
Compares two Excel files on a cell-by-cell basis and dumps differences
C++/C library to construct Excel .xls files in code.
OTC Trading Network
cost estimation and management accounting, using neural networks
Simulate a loan from its rate, amount and duration
an embeddable spreadsheet for your web application
Software platform
Small, fast Java library for reading and writing CSV files