Showing 590 open source projects for "c source code"

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    Open Tax Solver

    Open Tax Solver

    Calculates income tax form entries, helps do your taxes.

    OTS is a safe, secure, easy-to-use program for calculating Tax Return Form entries, and determining your tax-owed or refund-due, for Federal or State personal income taxes. Includes updated versions for US 1040, Schedules A, B, C, D, and for several states. OTS provides both graphical and textual interfaces for quickly filing out your tax forms. --- Best way to download the correct version for your platform -- go to the OTS WEBSITE: =====> ...
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    Downloads: 102 This Week
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  • 2
    A quantitative finance C++ library for modeling, pricing, trading, and risk management in real-life. A cross-platform free/open-source tool for derivatives and financial engineering.
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    Downloads: 17 This Week
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  • 3
    webERP Accounting & Business Management

    webERP Accounting & Business Management

    Accounting & Best Practice Business Administration System

    Entirely web-based. It is coded in efficient PHP to present a very low overhead on hardware presenting screens fast & capable of working over low bandwidth connections. Now with HTML 5 & javascript form validation & table sorting. Mature codebase with a wealth of features: - Multi-currency - Multi-inventory location - Serial and Lot tracking inventory - Full double entry general ledger - Weighted Average or Standard Costing - Manufacturing works orders - Material Requirements...
    Downloads: 26 This Week
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  • 4
    Rapid ERP Development

    Rapid ERP Development

    Great Open Source Plugins For iDempiere ERP Project

    I created a set of simple plugins to use iDempiere ERP with Unicenta POS, Android Scanner, Budgeting, Warehousing, Manufacturing, on-the-fly generators for App Dictionary, CRM Board and Charts, Kanban Board, Translation and more. Always complete with full technical documentation, blogs and movie tutorials. No information hiding. Its the open source sharing passion and i wanted to give it all back. Much of my present work is sponsored by SYSNOVA, the largest iDempiere conglomerate user and...
    Downloads: 61 This Week
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  • 5
    This is a C library to check the validity of German and Austrian Bank Account Numbers. All currently defined test methods by Deutsche Bundesbank (Dec 2017: 00 to E4) are implemented. Modules for AWK, Perl, PHP, Python, Ruby, C#.net and VB.net are included too. The package includes also an IBAN converter to generate (german) IBANs and BICs from account data. All currently defined IBAN rules by Deutsche Bundesbank are implemented (Dec 2017: 57 rules) and tested against independent solutions.
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    Downloads: 25 This Week
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  • 6
    NeuralProphet

    NeuralProphet

    A simple forecasting package

    NeuralProphet bridges the gap between traditional time-series models and deep learning methods. It's based on PyTorch and can be installed using pip. A Neural Network based Time-Series model, inspired by Facebook Prophet and AR-Net, built on PyTorch. You can find the datasets used in the tutorials, including data preprocessing examples, in our neuralprophet-data repository. The documentation page may not we entirely up to date. Docstrings should be reliable, please refer to those when in...
    Downloads: 0 This Week
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  • 7
    OpenClinic GA

    OpenClinic GA

    Open Source Integrated Hospital Information Management System

    OpenClinic GA is an open source integrated hospital information management system covering management of administrative, financial, clinical, lab, x-ray, pharmacy, meals distribution and other data. Extensive statistical and reporting capabilities. OpenClinic GA and OpenClinic GMAO are owned by Frank Verbeke, MD, PhD at Post-Factum BV (https://www.post-factum.be)
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    Downloads: 200 This Week
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  • 8
    Free Invoicing Software for 2025

    Free Invoicing Software for 2025

    Simple Invoicing program for Desktop written in vba and Access

    This is a learning/sample/functional Invoicing program written in vba and MS-Access. It is for a small, or personal, business. It should give you practice in learning/use of Invoicing, and installing on the desktop, and programming in vba and MS-Access. Note that the free MS-Access Runtime is with the download . You need MS-Access if you want to work with the program code or print reports (part of Office 365). The program processes Invoicing and Quotes, and produces reports for A/R,...
    Downloads: 8 This Week
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  • 9
    HomeBank

    HomeBank

    Free, easy, personal accounting for everyone

    «HomeBank» is the software you have always wanted to manage your personal accounts. It brings you many features to analyze your finances in a detailed way instantly and dynamically with powerfull report tools based on filtering and graphical charts.
    Downloads: 26 This Week
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  • 10
    Openbravopos

    Openbravopos

    Open Source Openbravo POS convert to Commercial Retail ERP and POS

    Complete and user-friendly retail POS functionality A comprehensive, flexible, and user-friendly cloud-based retail POS software. 1. Sales, quotations, reservations, and returns, including cross-store and cross-channel scenarios. 2. Automatic validation of customer personal data. 3. Configuration of keymaps for quick access to options and featured products. https://www.youtube.com/watch?v=Aai3iYLP2TQ&pp=ygUNb3BlbmJyYXZvIGtkcw%3D%3D Contact: both version of Openbravo POS...
    Downloads: 41 This Week
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  • 11
    Fireworkz (Colton Software)

    Fireworkz (Colton Software)

    An integrated word processor and spreadsheet for RISC OS and Windows

    Fireworkz combines the features of Wordz (a word processor that you can use to write letters, reports, books, invitations, shopping lists, schedules and other documents) and Resultz (a spreadsheet that you can use to perform calculations, analyse figures, and produce colourful charts) enabling you to do even more; incorporate live results in your reports, or perform an automatic mail-merge to your friends or customers. If you are using Microsoft® Windows®, Linux or macOS, and don't know...
    Downloads: 10 This Week
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  • 12
    QChartist

    QChartist

    Free and Open Source Technical Analysis Charting Software

    QChartist is a free and open source technical analysis charting software. Its purpose is to provide a complete set of tools to perform technical analysis on charts and data. It helps to make forecasts mainly for markets but can also be used for weather or any quantifiable data. The program is flexible and its functionalities can be easily extended. You can draw geometrical shapes on your charts or plot programmable indicators from your data.
    Downloads: 8 This Week
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  • 13
    bitResurrector

    bitResurrector

    Bitcoin private key recovery tool with Bloom Filter & CUDA

    ...The engine exploits specific entropy vulnerabilities (CVE-2013-7372) and uses a 9-echelon statistical filter to segregate mathematical "corpses" from potentially valid keys. Technological Stack: - Zero-Latency Bloom Filter: Real-time matching against 58M+ active addresses (Loyce Club data). - Turbo Core: C++/AVX-512 optimization with processor affinity. - GPU Mode: Massive parallel computation via NVIDIA CUDA. - Memory Management: Zero disk I/O lag using mmap (Memory-Mapped Files). BitResurrector is a closed-source, proprietary tool for researchers and professionals.
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    Downloads: 23 This Week
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  • 14
    OptionMatrix

    OptionMatrix

    Financial Derivatives Calculator with 171+ Models (Options Calculator)

    A real-time financial derivatives calculator supporting 171+ models from QuantLib, Financial Numerical Recipes in C++ and MetaOptions. Matrices of prices are created with iterating strikes and/or months. A strike control system can produce any strike. A generalized date engine can calculate re-occuring distances to any industry used expiration into the future. Spread engine with spread views. Models Supported: Black-Scholes, Merton-73, Black-76, Roll Geske Whaley, Garman KohlHagen, Jump...
    Downloads: 4 This Week
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  • 15
    Free Invoicing Software for Auto Shops

    Free Invoicing Software for Auto Shops

    An Invoicing program for Auto Shops written in vba and MS-Access.

    This is an sample/learning/functional Invoicing program written in vba and MS-Access. It is for a small, or personal, Auto Repair type business. It should give you practice in learning/use of Invoicing, and installing on the desktop, and programming in vba and MS-Access. Note that the free MS-Access Runtime is with the download . You need MS-Access if you want to work with the program code, or print reports (part of Office 365). The program processes Invoicing, Appointments, and Quotes, and...
    Downloads: 5 This Week
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  • 16
    Spreadsheets

    Spreadsheets

    Spreadsheets with Smart Fill, styling, scripting and more!

    Spreadsheets is a lightweight, extensible spreadsheet application designed for efficient data management, editing, and automation. It provides a familiar spreadsheet workflow while introducing programmable functionality through integration with LumenLang, allowing users to automate tasks and create custom spreadsheet logic using scripts. The project focuses on performance, simplicity, and extensibility, featuring a custom scripting environment, formula support, and a flexible architecture...
    Downloads: 3 This Week
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  • 17
    Qt Bitcoin Trader

    Qt Bitcoin Trader

    Secure Trading Client for most popular Bitcoin exchanges

    his software helps you open and cancel orders very fast. Real time data monitoring. Automated trading using JavaScript powered scripts. And now it supports JL Script, advanced strategy script language. More info https://forum.centrabit.com/viewforum.php?f=3 Next ToDo: 1 ) Advanced Charts 2 ) Add support to monitor many exchanges and currencies at the same time 3 ) Develop server to collect all ticker and depth data to provide single WebSocket connection for realtime data updates 4...
    Downloads: 7 This Week
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  • 18
    OpenMoneyBox

    OpenMoneyBox

    Budget management

    OpenMoneyBox is an application designed to manage small personal budgets in the easiest way. Check the homepage to download apps/packages for additional Operating Systems.
    Downloads: 2 This Week
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  • 19
    Forex Assistant

    Forex Assistant

    Manage accounts, analyze trades, track strategies & stats , News & Cal

    Forex Assistant is a comprehensive Windows desktop application designed to support forex traders in every aspect of their trading journey. From essential trading calculators and market insights to powerful account and trade management, it brings everything you need into one intuitive platform. 🔑 Main Features 🧮 Calculator Tools Profit/Loss Calculator Currency Converter Position Size Calculator Pips Calculator Margin Calculator 🌍 Market Insights Live Market News Economic...
    Downloads: 3 This Week
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  • 20
    KherveSheet

    KherveSheet

    Excel for scientists: high-quality plots, Python in cells, AI side bar

    KherveSheet is a desktop spreadsheet application for scientists, built in Python and running on Windows. Plotting Charts are generated using matplotlib and embedded directly in the sheet as movable, resizable objects. You have full control over axes, scales, ticks, titles and grids. Curve fitting and peak fitting are supported, with goodness-of-fit reporting overlaid on the plot. Every cell can also run a full Python program, not just a formula. An integrated AI assistant can generate...
    Downloads: 1 This Week
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  • 21
    billing-animal-hospital

    billing-animal-hospital

    Demo Invoicing APP for Veterinarian Medical Office

    This is an sample Invoicing program written in vba and MS-Access. It is for a small, or personal, Vets Medical Office. It should give you practice in learning/use of Invoicing, and installing on the desktop, and programming in vba and MS-Access. Note that the free MS-Access Runtime is with the download . You need MS-Access if you want to work with the program code or print reports (part of Office 365). The program processes Invoicing, Appointments, and Quotes, and produces reports for A/R,...
    Downloads: 0 This Week
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  • 22
    GeneralLedgerFinancials

    GeneralLedgerFinancials

    Accountant's Friend - General Ledger Ver 7b Beta

    Accountant's Friend is a General Ledger accounting system that provides the basic G/L and related accounting procedures for a small business. Typical businesses might be Accounting, Law, Product Resale, Computer Programming, Website Design, Repair, Training, or others. You do the G/L Transaction Entry with the system, and at the end of the month prepare your Financial Statements. The G/L system prints reports on all aspects of the G/L accounting. You might also be interested in a...
    Downloads: 0 This Week
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  • 23
    Reactorcore's Revshare System

    Reactorcore's Revshare System

    Ultimate Zero-Budget Revshare Solution for Indie Teams

    ...KEY FEATURES: • Smart Payout Calculator - Automated tier-based revenue splits with self-balancing fairness algorithms • Team Management - Track contributors, assign tiers, manage payment info, export credits lists • History & Reports - Complete payout timeline with statistics, export reports as Markdown or CSV • 15 Comprehensive Guides - Covering team infrastructure, recruiting, marketing, business models, IP law, and collaboration culture Web App: https://rc-revshare-system.reactorcoregames.workers.dev/ Source Code: https://github.com/ReactorcoreGames/Reactorcores-Revshare-System
    Downloads: 0 This Week
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  • 24
    Cryptofolio
    Cryptofolio is an open-source, and self-hosted solution for tracking your cryptocurrency holdings. It features a web interface, an Android mobile app, and a cross-platform desktop application for Windows, macOS, and Linux. These three platforms all work using a RESTful API, which you'd have to host yourself. It can provide you with a quick glance at the market, while also keeping track of your assets and their value.
    Downloads: 1 This Week
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  • 25
    Open Crypto Tracker

    Open Crypto Tracker

    Bitcoin Alts portfolio tracker, email / text / alexa / telegram alerts

    100% FREE / open source / PRIVATE cryptocurrency portfolio tracker. Email / text / alexa / telegram price alerts, price charts, mining calcs, leverage / gain / loss / balance stats, news feeds +more. Privately track Bitcoin / Ethereum / unlimited cryptocurrencies. Customize as many assets / markets / alerts / charts as you want. Over 50 Exchanges / 40 Trading Pairs Supported (exchanges / pairings list at bottom of README.txt): https://tinyurl.com/ct-readme Nearly Unlimited Assets...
    Downloads: 7 This Week
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