Apps similar to Clams include GnuCash, which is free and open source. Other options are ERPNext, Frappe Books, Dolibarr and Invoice Ninja. There's no shortage of Invoicing Software like Clams, with more than 50 alternatives for the web, Mac, Windows, Android and iPhone.
MyMoney is a personal finance management & budgeting app that helps you track your money use. This powerful spending tracker saves your money as you can see where your money goes. It has daily expense tracker, free budget planner, intuitive analysis and many powerful...
Your all-in-one business web app. Master your freelance admin, one habit at a time.
Germany
EU
Free accounting software for small businesses and accountants - Unlimited invoicing, client management, smart tagging, and payroll integration - Free QuickBooks alternative.
United States
This is a continuation of Manta App, I'm taking care about the maintenance and new features as I need it.
BILLmanager automates hosting & cloud sales, billing (pay-as-you-go, prepaid/postpaid), and client self-service. Includes BI dashboards, 30+ payment gateways, multi-branding, and API-first integration with virtualization platforms, registrars, and SSL authorities.
CyprusEU
Accurate employee time tracking software for reporting, invoicing and payroll.
Belarus
OpenMoneyBox is an application designed to manage small personal money budgets in the easiest way.
A small business bookkeeping platform that handles HMRC MTD and payment processing. Options of API plugins to enhance functionality. Very responsive customer service.
United Kingdom
Simple Invoices is a free, open source, web based invoicing system that you can install on your server/pc or have hosted by one of our services providers.
Moxie is a single digital workspace with all the tools needed to start, manage and grow a freelancing business, with a built-in personalized community to help freelancers connect with others, develop and refine their craft and get help from experts.
