Centralized signing and verification
Personal Finance and Accounting
BestBooks Accounting Application Framework (BAAF)
Accounting Journal and Ledger and Balance Sheet
Web based Cost Estimation, Material Takeoff and Reconciliation Tool
A full ERP system - moved to GitHub. See full description for details.
Bovespa Analytics
jGnash Personal Finance
JEE based Accounting web-application.
Financial Calculator
Feature rich insurance quote & buy system for underwriters and brokers
Mathematics, linear algebra and optimisation
Create and print simple invoices
Microservice Architecture with Spring Boot, Spring Cloud and Docker
Expense reporting system for business
Interactive Brokers TWS / IB Gateway Host Tool
A free alternative to MS Money