Search Results for "simple"

Frankfurter is an open-source currency exchange rate API that provides reliable financial data based on reference rates from institutional sources such as the European Central Bank. It is designed to be simple, transparent, and free to use, with no API key requirements or usage limits, making it particularly attractive for developers and small projects. The API offers endpoints for retrieving the latest exchange rates, historical data, and time-series data, enabling both basic conversions and more advanced financial analysis. It allows users to specify base currencies and filter results by selected currencies, making responses efficient and customizable. ...

...It also includes a Money::Currency class that stores metadata such as currency codes, symbols, and formatting rules, enabling consistent handling of international currencies. The library supports arithmetic operations, comparisons, and currency conversion through configurable exchange rate providers, making it suitable for both simple and complex financial systems.

OpenSourceBilling or OSB is a simple, open source web application for creating and sending invoices, receiving payments, managing clients, and tracking and reporting. There’s no need to pay for these services because OSB does it all for free and easily. OSB can produce reports of sales, payments and collected revenues, and simply makes billing and invoicing hassle-free.

A robust internet café administration toolkit. A very simple GUI to manage various systems running different operating systems. The main scripting language is Ruby using GTK for its GUI.

Web based donation collection web-application, shows summary and more detailed donation information. Simple "contest" can be done.

alice_invoice provides a simple ruby interface for downloading invoices and corresponding digital signatures from German ISP Alice.