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Browse free open source C Internet Software and projects below. Use the toggles on the left to filter open source C Internet Software by OS, license, language, programming language, and project status.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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  • Accounting Software Built for Owners, and Their Clients Icon
    Accounting Software Built for Owners, and Their Clients

    Make invoicing and billing painless for your small business with FreshBooks.

    Balancing your books, client relationships, and business isn’t easy. FreshBooks gives you the info and time you need to focus on your big picture—your business, team, and clients.
    Learn More
  • 1
    uGet - Download Manager
    uGet, the Best Download Manager for Linux. uGet is a lightweight yet powerful Open Source download manager for GNU/Linux developed with GTK+, which also comes packaged as a portable Windows app. - Quick Links - Features: https://ugetdm.com/features Screenshots: https://ugetdm.com/screenshots Blog: https://ugetdm.com/blog Support: https://ugetdm.com/qa Frequently Asked Questions (FAQs): https://ugetdm.com/qa/faq RSS Feed: https://ugetdm.com/rss GitHub: https://github.com/ugetdm
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    Downloads: 718 This Week
    Last Update:
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  • 2
    IPCop Firewall

    IPCop Firewall

    Linux firewall distribution geared towards home and SOHO users.

    The IPCop Firewall is a Linux firewall distribution. It is geared towards home and SOHO users. The IPCop web-interface is very user-friendly and makes usage easy.
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    Downloads: 99 This Week
    Last Update:
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  • 3
    Endian Firewall Community
    Endian Firewall Community (EFW) is a "turn-key" linux security distribution that makes your system a full featured security appliance with Unified Threat Management (UTM) functionalities. The software has been designed for the best usability: very easy to install, use and manage and still greatly flexible. The feature suite includes stateful packet inspection firewall, application-level proxies for various protocols (HTTP, FTP, POP3, SMTP) with antivirus support, virus and spam-filtering for email traffic (POP and SMTP), content filtering of Web traffic and a "hassle free" VPN solution (based on both OpenVPN and IPsec).
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    Downloads: 398 This Week
    Last Update:
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  • 4
    OpenCA

    OpenCA

    Open Source PKI solutions

    The OpenCA PKI Development Project is a collaborative effort to develop a robust, full-featured and Open Source out-of-the-box Certification Authority implementing the most used protocols with full-strength cryptography world-wide.
    Downloads: 12 This Week
    Last Update:
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  • Curtain LogTrace File Activity Monitoring Icon
    Curtain LogTrace File Activity Monitoring

    For any organizations (up to 10,000 PCs)

    Curtain LogTrace File Activity Monitoring is an enterprise file activity monitoring solution. It tracks user actions: create, copy, move, delete, rename, print, open, close, save. Includes source/destination paths and disk type. Perfect for monitoring user file activities.
    Learn More
  • 5
    Patches xmms for on the fly recoding id3 tags, m3u playlists, and file names from one encoding to another. Support ID3 tag editing, playlist sorting, encoding autodetection. Configuration available under encodings page of standard xmms preferences.
    Downloads: 18 This Week
    Last Update:
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  • 6
    Samba Commander is a text mode SMB network commander. In SMBC, you can browse the local network or you can use the search function to find the files. You can also download/upload files and directories or create them both locally and remotely.
    Downloads: 11 This Week
    Last Update:
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  • 7
    Provide secure and stable OS, based on highly modified Linux Kernel, own package system, like "BSD Ports". Compatible with x86, Power PC. Easy to use of any level users. Complete Documentantion in many languages. 99% compatible with Windows.
    Downloads: 5 This Week
    Last Update:
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  • 8

    Darkbot

    The IRC's Talking Robot

    [ Please read https://sourceforge.net/p/darkbot/news/2014/01/darkbots-revitalization/ ] Darkbot is a portable IRC chat robot written in the C language that can be taught responses to user inquiries, and even have conversations with them. Darkbot was originally created by Jason Hamilton as an aid for help channels on Intenet Relay Chat.
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    Downloads: 8 This Week
    Last Update:
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  • 9
    SMBD(Samba) Audit is a set of VFS audit module for Samba 3 and web frontend to view and search samba audit logs. Module stores logs directly into MySQL or PostgreSQL database. See README and INSTALL for more information
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    Downloads: 3 This Week
    Last Update:
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  • Secure User Management, Made Simple | Frontegg Icon
    Secure User Management, Made Simple | Frontegg

    Get 7,500 MAUs, 50 tenants, and 5 SSOs free – integrated into your app with just a few lines of code.

    Frontegg powers modern businesses with a user management platform that’s fast to deploy and built to scale. Embed SSO, multi-tenancy, and a customer-facing admin portal using robust SDKs and APIs – no complex setup required. Designed for the Product-Led Growth era, it simplifies setup, secures your users, and frees your team to innovate. From startups to enterprises, Frontegg delivers enterprise-grade tools at zero cost to start. Kick off today.
    Start for Free
  • 10

    Free-SA

    Free-SA is report generating tool for web, proxy and mail log files

    Free-SA is logs processor and report generating tool. It can be used to control traffic usage, to evaluate conformance to the Internet access security policies, to investigate security incidents, to evaluate web server efficiency and to detect troubles with server configuration.
    Downloads: 1 This Week
    Last Update:
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  • 11
    P3Scan is a fully transparent scanning proxy-server for email clients. It provides scanning of incoming/outgoing email messages for Virus''s, Worms, Trojans, Spam, and harmfull attachments. It can also parse messages for web-bugs.
    Downloads: 4 This Week
    Last Update:
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  • 12
    Textual data processing solution for system administrators and Web programmers. The C library allows to manipulate string lists, CGI forms, MIME data, configuration files, logs parsing, regular expressions, date/time parsing, templates rewriting etc.
    Downloads: 4 This Week
    Last Update:
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  • 13
    OpenFTS (Open Source Full Text Search engine) is an advanced PostgreSQL-based search engine that provides online indexing of data and relevance ranking for database searching. Close integration with database allows use of metadata to restrict search re
    Downloads: 2 This Week
    Last Update:
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  • 14
    IP accounting tools package based on Berkeley Packet Filer mechanism. Continue from BPFT by V.Vorobyev, TRAFD by V.Belekhov & S.Svirid. Use the PCAP library to implement connection to bpf kernel pseudo-device.
    Downloads: 1 This Week
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  • 15
    Open Far Plugins
    Open source plugins for Far Manager - windows file manager which is now available under revised BSD license from www.farmanager.com
    Downloads: 1 This Week
    Last Update:
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  • 16
    Count traffic from users with dynamic ip addresses. Uses information from application level (Samba, pppd, etc.) to operate on network level (modify ipfw or another firewall rules for traffic counting).
    Downloads: 1 This Week
    Last Update:
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  • 17
    Blitz templates is a fast template engine written in C and compiled as a PHP module. It started as a php_templates replacement, but developed into much more. It is based on extensible template controllers (PHP) and weakly-active templates (HTML).
    Downloads: 0 This Week
    Last Update:
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  • 18
    Bruteblock allows system administrators to block various bruteforce attacks on UNIX services. The program analyzes system logs and adds attacker's IP into IPFW table effectively blocking them. Addresses are removed from the table after expiration period
    Downloads: 0 This Week
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  • 19
    Provide secure, quality, user-friendly and fail-proof access to internet manager for IPTABLES-DENY-ALL-based Linux configuration of firewall, including traffic and time accounting, logging, auto-disconnection. Software for i-net clubs and caffee admins
    Downloads: 0 This Week
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  • 20
    Charts Library and Visual Environment. Free software for scientific and business charts generation. Converts data flows into well-designed images. Suitable for web, reports, presentations and applications development. Based on its own CHD format.
    Downloads: 0 This Week
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  • 21
    Intergated communication server with multiple services and interfaces based on exists projects. PgMCK and PgLinkPoint was removed (Export Control issues)
    Downloads: 0 This Week
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  • 22
    WELCOME , Easy11 and Service11 provide a open source platform fo p2p wireless networks for linux and windows platforms. Easy11 is a wireless p2p software for free wireless community. Service11 provide support and service for wireless networks
    Downloads: 0 This Week
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  • 23
    Project is related to EHNT: Extreme Happy Neflow Tool and will provide multiple aggregating clients for ehntserv with different aggregating features together with auxilliary tools for summarizing/filtering the output.
    Downloads: 0 This Week
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  • 24
    Far Manager

    Far Manager

    Text mode file and archive manager for Windows

    Far Manager is a program for managing files and archives in Windows operating systems. Far Manager works in text mode and provides a simple and intuitive interface for performing most of the necessary actions: viewing files and directories; editing, copying and renaming files; and many other actions. Far Manager has a multi-language, easily configurable interface. File system navigation is made easier through the use of color highlighting and sort groups. The functionality of Far Manager is greatly extended by external DLL modules — plugins (made possible by a special set of interfaces — the Plugins API). For example: archive support, FTP client, temporary panel and network browser are all implemented as plugins included in the standard distribution of Far.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    GTCop Professional Security Appliance aims to provide a powerful tool for satellite communications, with enhanced QoS and bandwidth controls. As derived from IPCop Firewall, it is a stable, secure, easy to configure and maintain GNU/Linux firewall box.
    Downloads: 0 This Week
    Last Update:
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