Personal Finance and Accounting
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
Financial Calculator
Mathematics, linear algebra and optimisation
Create and print simple invoices
Python spreadsheet application
Interactive Brokers TWS / IB Gateway Host Tool
A pub management application, with stock management and user accounts
Aplicación que permite filtrar hojas de cálculo de google
Compares two Excel files on a cell-by-cell basis and dumps differences
Personal budgeting software with projections based on past trends.
Equation of stock trading simplified to game of moving resizing balls
Simple personal finance tracker using Spring Boot and AngularJS
jBilling is a web-based enterprise billing system.
OTC Trading Network
Facturación para autónomos
JavaPOS implementation and more, for Brazilian Retail applications