Free and Open Source Invoicing, Expenses & Time-Tracking
Free Desktop book-keeping software for small-businesses & freelancers
Accounting & Best Practice Business Administration System
Accounting system for smaller companies written in GnuCobol.
Profesionalna integracja z Krajowym Systemem e-Faktur (KSeF)
Free & Open Source Invoice App for Freelancers & Small Businesses
JEE based Accounting web-application.
FreelancerBooks -Project Management for Freelancers and Agencies
Mutasyon is a script can add customer, products, inventory or invoice
Captures time & expense by project and account; generates invoice
Calculate original price, percentage, sale price, markup
Software platform
Alternative Gnucash implementation