Get a grip on your finances
Firefly III: a personal finances manager
A nimble options backtesting library for Python
Javascript plugin to create web-based tables & spreadsheets
Personal finance transaction tracker similar to the obsolete MS Money
Free, easy, personal accounting for everyone
A standalone, portable Ada package for producing Excel spreadsheets
Bitcoin Alts portfolio tracker, email / text / alexa / telegram alerts
JEE based Accounting web-application.
Simple budget manager for your needs.
Small, fast Java library for reading and writing CSV files