XCubes

Multidimensional spreadsheet for financial simulation, planning, reporting, marketing analysis etc.
Miramath

Miramath is an open source project inspired by the MathCad mathematical application.
MailShogun

MailShogun is an e-mail forwarding service as well as a domain address producer.
Calligra Sheets

Calligra Sheets (formerly KSpread) is a fully-featured calculation and spreadsheet tool.
Alkanet

Visual builder for neural nets, drag and drop for deep learning.
GoldSim

GoldSim is the premier Monte Carlo simulation software solution for dynamically modeling complex systems in business, engineering and science.
Stackby

API first collaborative databases to build your own tools, the way you want. Sign up for free. .
NLTK

NLTK is a platform for building Python programs to work with human language data.
DataNitro

DataNitro enables users to automate Excel with Python and also to turn a spreadsheet into a database GUI – or a web server backend.
StatusTicker

StatusTicker monitors 890+ apps and services for incidents and outages, and reports them to you in real-time. You choose the services to watch and setup notifications, and StatusTicker does the rest. .