Open Source C++ Software
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C++ Software
Browse free open source C++ Software and projects below. Use the toggles on the left to filter open source C++ Software by OS, license, language, programming language, and project status.
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Host LLMs in Production With On-Demand GPUsDeploy your model, get an endpoint, pay only for compute time. No GPU provisioning or infrastructure management required.
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Gemini 3 and 200+ AI Models on One PlatformBuild generative AI apps with Vertex AI Studio. Switch between models without switching platforms.
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Windows MBox Viewer
Windows eml and mbox viewer.
Free Windows Mbox Viewer. Gain access to mbox archives, single eml or single Outlook messages. View attachments and export single mails in eml format. Access large mbox files such as Google Takeout or Mozilla Thunderbird Archives. Development of mbox viewer continues now at github: https://github.com/eneam/mboxviewer **NOTE**: Windows Defender may sometimes report incorrectly that mbox-viewer contains malware. Please report the case to the development. Development will ask Windows Security to update Windows Defender rules to resolve the issue. Last time the incorrect detection was corrected by Microsoft Security within few hours. User will need to run Windows Update to install the latest updated detection rules. -
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Nikkho
Javier Gutiérrez Chamorro (Guti) Open source projects
Javier Gutiérrez Chamorro (Guti) Open source projects Author's website: https://www.javiergutierrezchamorro.com -
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AviTab
X-Plane plugin that displays a tablet to aid VR usage
AviTab is a plugin for the X-Plane flight simulator. It displays a tablet-like computer with a few apps in the cockpit. It is mainly used for flying in virtual reality. When flying in a simulator, one often needs to look up details in PDF charts, plane manuals, checklists or other documents. Using a PDF reader breaks the immersion because the virtual aviator either has to take off of their HMD or use other tools that can move windows into VR. AviTab tries to solve this problem by offering a PDF reader inside a native plugin for X-Plane. Using a plugin also opens possibilities for more apps inside the tablet, for example, to display information about the plane status or aid in navigation. When hovering over the edges of the tablet from a short distance, X-Plane will display green bars around the tablet. The upper bar can be used to grab the window and move it around inside the cockpit. -
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PokerTH is a poker game written in C++/Qt. You can play the popular Texas Hold'em poker variant against up to nine computer-opponents or play internet games with people all over the world. This poker engine is available for Linux, Windows and Mac
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Enterprise-grade ITSM, for every businessFreshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
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BrowserOS
Agentic browser; privacy-first alternative to ChatGPT Atlas
BrowserOS is an open-source, agentic web browser built on a Chromium base that integrates AI agents directly into the browsing experience. Rather than just doing standard browsing, it places AI intelligence at the core: you can connect your own API keys (for e.g., OpenAI, Anthropic, Google Gemini) or run local models (via e.g., Ollama) so that your browsing data and automation stay on your machine — privacy and control are emphasized throughout. The interface remains familiar to users of Chrome (including support for Chrome extensions), but adds new capabilities: the browser can automate tasks for you, help you research by extracting and summarizing content, and enable agent-based workflows (e.g., “go fetch this info,” “fill this form,” “monitor this site”). The project is community-driven and entirely open source under the AGPL-3.0 license, which means you can inspect, fork, and contribute to the codebase. -
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FET is free timetabling software for schools, high-schools and universities. Scheduling is done automatically. Please visit the project web site https://lalescu.ro/liviu/fet/ to be sure you always have the latest version
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Waifu2x-Extension-GUI
Photo/Video/GIF enlargement using machine learning
Image & GIF & Video Super-Resolution using Deep Convolutional Neural Networks. Built-in image processing algorithm: Waifu2x / SRMD / RealSR / Anime4K / ACNet Built-in image processing engine: Waifu2x-caffe / Waifu2x-converter / Waifu2x-ncnn-vulkan / SRMD-ncnn-vulkan / RealSR-ncnn-vulkan / Anime4KCPP Github: https://github.com/AaronFeng753/Waifu2x-Extension-GUI -
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Natural Docs
Multi-language source code documentation tool
Natural Docs is an open-source documentation generator for multiple programming languages. You document your code in a natural syntax that reads like plain English. Natural Docs then scans your code and builds high-quality HTML documentation from it. SourceForge houses the source code and issue database for the old Perl version of Natural Docs, version 1.52. It is still available but no longer being updated. Please see NaturalDocs.org for the 2.x source code and issue database. However, you can still download the both the old and the new 2.x releases of Natural Docs here. -
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openalpr
Automatic license plate recognition library
Deploy license plate and vehicle recognition with Rekor’s OpenALPR suite of solutions designed to provide invaluable vehicle intelligence which enhances business capabilities, automates tasks, and increases overall community safety! Rekor’s OpenALPR suite of solutions utilizes artificial intelligence and machine learning to greatly surpass legacy OCR solutions. Now, in real-time, users can receive a vehicle's plate number, make, model, color, and direction of travel. Rekor’s OpenALPR suite of solutions allows law enforcement and homeowners to protect their communities, while businesses can boost customer loyalty by receiving alerts the moment a plate of interest is detected. Rekor’s OpenALPR suite of solutions is a force multiplier. Rekor Scout™ upgrades nearly any IP, traffic, or security camera to give you an immediate edge, while Rekor CarCheck analyzes vehicle images and returns valuable data for countless business use-cases. -
Custom VMs From 1 to 96 vCPUs With 99.95% UptimeLive migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
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AI File Sorter
Local AI file organization with categorization and rename suggestions
AI File Sorter is a cross-platform desktop application that uses AI to organize files and suggest meaningful file names based on real content, not just filenames or extensions. The app can analyze image files locally and propose human-readable rename suggestions (for example, IMG_2048.jpg → clouds_over_lake.jpg). It can also analyze the text content of documents to improve categorization and renaming. Supported formats include PDF, DOCX, XLSX, PPTX, ODT, ODS, ODP, and common text files. All suggestions are optional and must be reviewed before being applied. AI File Sorter helps clean up cluttered folders such as Downloads, external drives, or NAS storage. It can run fully offline using local AI models like Mistral 7B or LLaMA 3B. No files, images, document contents, or metadata are uploaded, and no telemetry is sent unless a remote AI endpoint is explicitly configured. -
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KoboldCpp
Run GGUF models easily with a UI or API. One File. Zero Install.
KoboldCpp is an easy-to-use AI text-generation software for GGML and GGUF models, inspired by the original KoboldAI. It's a single self-contained distributable that builds off llama.cpp and adds many additional powerful features. -
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WordTsar
WordTsar is a Wordstar 7.0D clone
Wordstar for the 21st Century. WordTsar is a Wordstar 7.0D document mode clone. It loads Wordstar 4, Wordstar 7, RTF (partial) files, and DOCX (partial) files, and saves in Wordstar 7 and RTF format. Wordstar files MUST have a .ws extension to load properly. -
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GnoppixNG
Gnoppix Linux
Gnoppix is a Linux distribution based on Debian Linux available in for amd64 and ARM architectures. Gnoppix is a great choice for users who want a lightweight and easy-to-use with security in mind. Gnoppix was first announced in June 2003. Currently we're working on a Gnoppix version for WSL, Mobile devices like smartphones and tablets as well. -
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Msc-generator
Draws signalling charts, block diagrams and graphs from text input.
NOTE! We have moved to https://gitlab.com/msc-generator/msc-generator All development happens there. Also, download new releases & submit issues there. A tool to draw various charts from textual descriptions. Currently, three types of charts are supported: Message Sequence Charts, generic Graphs, and Block Diagrams, with more to be added in the future. There is a command-line version for Linux and Mac (replacing mscgen), which now sports a GUI, as well. Msc-generator allows fine control over the appearance and has a rich feature set complete with detailed documentation. On Windows, you can embed the charts in a document or presentation and simply double-click it in Office to edit them. On Linux and the Mac, a command-line version is available, and a GUI, as well. A .deb package is available starting from Debian Bookworm (currently testing) and Ubuntu Jammy Jellyfish (22.04) from the official repositories. For older releases see the Wiki. A Mac homebrew package is available. -
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ESP32-CAM_MJPEG2SD
ESP32 Camera motion capture application to record JPEGs to SD card
Application for ESP32 / ESP32S3 with OV2640 / OV5640 camera to record JPEGs to SD card as AVI files and playback to the browser as an MJPEG stream. The AVI format allows recordings to replay at the correct frame rate on media players. If a microphone is installed then a WAV file is also created and stored in the AVI file. The ESP32 cannot support all of the features as it will run out of heap space. For better functionality and performance, use one of the new ESP32S3 camera boards, eg Freenove ESP32S3 Cam, and ESP32S3 XIAO Sense, but avoid no-name boards marked ESPS3 RE:1.0. -
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X's Recommendation Algorithm
Source code for the X Recommendation Algorithm
The Algorithm is Twitter’s open source release of the core ranking system that powers the platform’s home timeline. It provides transparency into how tweets are selected, prioritized, and surfaced to users, reflecting Twitter’s move toward openness in recommendation algorithms. The repository contains the recommendation pipeline, which incorporates signals such as engagement, relevance, and content features, and demonstrates how they combine to form ranked outputs. Written primarily in Scala, it shows the architecture of large-scale recommendation systems, including candidate sourcing, ranking, and heuristics. While certain components (such as safety layers, spam detection, or private data) are excluded, the release provides valuable insights into the design of real-world machine learning–driven ranking systems. The project is intended as a reference for researchers, developers, and the public to study, experiment with, and better understand the mechanisms behind social media content. -
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Open Source ERP
ERP Server
The Open Source ERP is a web based. The ERP server software runs on Linux. The ERP need no plugins in the browser on the client computer. The ERP can be accessed from any where with out effort. Be it at home with your home computer (Windows, Linux, MAC OS X), or traveling with your smart phone (iPhone, iPad, Android), or in the office, the data is always at hand. Webdav interface and Active Sync for synchronizing contacts and time management. In addition to customer, order, invoice management, etc... the ERP has a complete warehouse management including a order management for material in the warehouse. -
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Envy
Refined P2P Filesharing + BitTorrent
Envy is a powerful multi-network p2p filesharing and torrent client for Windows or Wine. A mature mainstream fork of Shareaza. Highly skinnable, with BitTorrent/DHT, G2/Gnutella², Gnutella, ED2K/eMule, DC++, http/ftp protocols -and blacklist support baked in. Let others browse your public files. -
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Ryzom Core is a toolkit for the development of massively online universes. It provides the base technologies and a set of development methodologies for the development of both client and server code.
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OpenPapyrus
Sophisticated ERP, CRM, Point-Of-Sale (POS), etc. Open source now.
Mature system with rich functionality of ERP, CRM, Point-of-Sale (POS). This system has been developed since 1996. -
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UrBackup
Open Source Client/Server Network Backup System
Efficient Client-Server Backup system for Linux, macOS and Windows. A client for Windows, FreeBSD and Linux lets you backup open files and complete partition images (Windows). Backups are stored to disks in a efficient way (deduplication) on either Windows or Linux servers. -
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GLSMAC
Open-source OpenGL/SDL2 reimplementation of Sid Meier's Alpha Centauri
glsmac is a compact C99 library designed to simplify OpenGL development on macOS by creating a minimal, no-dependency window and OpenGL context setup. It uses only macOS's native APIs (Cocoa and Core OpenGL) without relying on third-party frameworks like GLFW or SDL. This makes it ideal for developers who want tight control over their OpenGL projects, need a lightweight setup for demos or testing, or are writing small graphical utilities without overhead. The code is short, self-contained, and easy to understand, serving as both a useful tool and educational resource. -
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PeerProject
Diverse P2P Filesharing
PeerProject is a versatile peer-to-peer filesharing client and file manager. Intuitive and aesthetic while supporting many networks and features. BitTorrent, G2, Gnutella, eDonkey, DC++, IRC, http/ftp & more. Mainstream fork of Shareaza p2p, for Windows & WINE. Note: This project is idle, see Envy fork for further development. -
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Funambol is the leading mobile cloud sync solution . The software in this repository is the open source version which consists of a sync server, clients/apps/sdks for mobile devices and computers, and connector software to interface with other systems. The open source version syncs PIM data such as contacts (address books), calendars (agendas), tasks and notes. The commercial version (unavailable on sourceforge) syncs additional data and media.
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ONLYOFFICE Desktop Editors
Free office suite for working with text, spreadsheets and presentation
ONLYOFFICE Desktop Editors is an open source and 100% free office suite, combining text, spreadsheet and presentation editors for working on documents offline. The application features all types of formatting options and allows users to edit complex documents. Collaboration features such as reviewing and real-time co-editing are available as well. The editors offer 100% compatibility with MS Office and support other popular document formats including OpenDocument. The application also allows connecting third-party plugins, making it easy for developers to write their own extensions and add new features to the editors. The application works across all popular platforms, including Windows (both 32-bit and 64-bit systems), Debian, Ubuntu and derivatives, Red Hat and derivatives, Mac OS 10.10 or higher.
