Open Source Projects using C++

A curated collection of the 62 best open source software using C++. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.

Expensify

Simplify expense management for businesses of all sizes

Stars
4,845
Forks
3,743
Last commit
7 hours ago

Automate expense reporting, reimbursements, and corporate card management with real-time data sync and powerful integrations.

Tuta

Secure email, calendar and contacts with end-to-end encryption

Stars
7,541
Forks
617
Last commit
3 days ago

Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.

Open Source Alternative to:

Microsoft 365

GIMP

Professional image editing without the price tag

Stars
6,127
Forks
862
Last commit
6 hours ago

Free, open-source image editor with professional tools for photo manipulation, digital art creation, and graphic design. Cross-platform support.

Open Source Alternative to:

Photoshop

Grit

Automated technical debt reduction for software teams

Stars
4,488
Forks
123
Last commit
2 days ago

Grit uses machine learning and static analysis to automatically generate pull requests that clean up code and migrate to the latest frameworks.

Kdenlive

Professional video editing without the price tag

Stars
4,983
Forks
409
Last commit
6 hours ago

Cross-platform non-linear video editor offering professional features for free. Edit videos on Linux, Windows, macOS, and BSD with advanced tools and effects.

Open Source Alternative to:

CapCut

Collabora Online

Open-source document editing suite for secure collaboration

Stars
3,198
Forks
1,006
Last commit
3 days ago

Powerful online document editor with Microsoft Office compatibility. Integrate into your infrastructure or use trusted hosting partners for secure team collaboration.

Open Source Alternative to:

Microsoft 365

Memgraph

High-performance graph computing for scalable data analysis

Stars
3,968
Forks
222
Last commit
11 hours ago

Memgraph is a scalable, in-memory graph database solution offering high-performance computing and Neo4j compatibility.

Open Source Alternative to:

MongoDB

LibreOffice

Free office suite with Microsoft compatibility

Stars
3,897
Forks
824
Last commit
16 hours ago

Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.

Open Source Alternative to:

Microsoft 365

RawTherapee

Professional raw photo processing made free and powerful

Stars
3,919
Forks
392
Last commit
14 hours ago

Free, cross-platform raw image processor with 32-bit floating point engine, advanced demosaicing algorithms, and professional-grade editing tools for photographers.

Open Source Alternative to:

Adobe Lightroom

Anthias

Transform any TV into professional digital signage

Stars
3,501
Forks
707
Last commit
6 hours ago

Free open-source digital signage software that turns Raspberry Pi or old PCs into powerful display solutions. Manage images, videos, and web content easily.

Open Source Alternative to:

OptiSigns

Sol

Fast and beautiful launcher for quick access to apps and tools

Stars
2,884
Forks
154
Last commit
13 hours ago

A modern macOS launcher that provides instant access to applications, utilities, and system functions through an elegant and efficient interface.

Open Source Alternative to:

Raycast

Checkmk

Complete IT infrastructure monitoring made simple

Stars
2,259
Forks
533
Last commit
17 hours ago

Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.

Open Source Alternative to:

DataDog

Timeplus

Real-time stream processing made simple and affordable

Stars
2,197
Forks
107
Last commit
3 days ago

Timeplus is a lightweight, powerful, and cost-efficient stream processing platform for real-time analytics, deployed as a single binary.

Icinga

Open source monitoring for complex IT infrastructure

Stars
2,199
Forks
605
Last commit
3 days ago

Monitor networks, servers, and cloud environments with flexible open-source solution. Custom checks, fast alerts, and complete infrastructure control.

Open Source Alternative to:

DataDog

Amical

Type 10x faster with AI-powered voice dictation

Stars
1,193
Forks
98
Last commit
15 days ago

Open source AI dictation app that transforms speech to text with context-aware formatting. Fast, accurate transcription for meetings, notes, and hands-free typing.

Open Source Alternative to:

Wispr Flow

Apache Cloudberry

Unlock Data's Potential with Open Source Power

Stars
1,213
Forks
213
Last commit
3 days ago

Leverage advanced analytics with a modern PostgreSQL kernel. 100% open source for robust data solutions.

Open Source Alternative to:

Snowflake

Jarvis

Dictate 4x faster than typing with natural voice commands

Stars
499
Forks
80
Last commit
9 days ago

Transform your computer interaction with natural voice commands. Dictate 4x faster than typing, control any app hands-free, and boost productivity instantly.

Open Source Alternative to:

Wispr Flow

Browser Operator

Open-source AI browser for intelligent web automation

Stars
476
Forks
76
Last commit
1 month ago

Privacy-focused AI browser with intelligent agents for research, analysis, and workflow automation. Features unified memory, compliance guardrails, and seamless integrations.

Open Source Alternative to:

Browserbase

Midori Browser

Fast, secure, and privacy-focused web browsing

Stars
295
Forks
18
Last commit
14 hours ago

Midori Browser is a lightweight, fast, and secure browser that protects users' privacy, available for Windows, Linux, and Android.

Open Source Alternative to:

Firefox

Cody

AI-powered coding assistant for enterprise development teams

Stars
82
Forks
29
Last commit
2 days ago

Advanced AI coding assistant that helps enterprise teams write, fix, and maintain code with enhanced accuracy and consistency across large codebases

Open Source Alternative to:

Claude Code

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

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Forks
Last commit

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Forks
Last commit

Browse tools using C++ by category

Accounting Software using C++

AI Assisted Coding Tools using C++

AI Coding Agents using C++

AI Coding Assistants using C++

AI Development Platforms using C++

AI Personal Assistants using C++

AI-Powered Editors using C++

API Clients using C++

Audio Editors using C++

Browser Automation for AI Tools using C++

Business Software using C++

Cloud Data Warehouses using C++

Cloud File Sync & Share Tools using C++

Cloud Storage Tools using C++

Code Transformation Tools using C++

Collaboration & Communication Tools using C++

Collaborative Notes & Wikis using C++

Data Engineering & Integration Tools using C++

Data Platforms for AI using C++

Design & Prototyping Tools using C++

Digital Signage Solutions using C++

Distributed Storage Tools using C++

Document Management Systems using C++

Encrypted Communication Tools using C++

Encrypted Storage Tools using C++

Event Streaming Platforms using C++

Expense Management Tools using C++

Fintech Infrastructure Tools using C++

Frontend Development Tools using C++

Game Development Platforms using C++

Graph Databases using C++

In-Memory Databases using C++

Infrastructure Monitoring Tools using C++

Launchers & Quick Access Tools using C++

Log Management Tools using C++

Low-Code/No-Code Platforms using C++

Media & Streaming Tools using C++

NoSQL & Document Databases using C++

Note-Taking Tools using C++

Password Managers using C++

Performance Monitoring (APM) Tools using C++

Personal Knowledge Management (PKM) Tools using C++

Photo & Video Management Tools using C++

Photo Editing Software using C++

Product Analytics using C++

Productivity & Utilities using C++

Relational Databases (SQL) using C++

Remote Desktop Software using C++

Screen Recording Tools using C++

Search Engines using C++

Secure & Encrypted Notes using C++

Secure Document Sharing Tools using C++

Secure Email Providers using C++

Security & Privacy Tools using C++

Static Analysis Tools using C++

Storage Tools using C++

Stream Processing Tools using C++

Task Management Tools using C++

Terminal Emulators using C++

Trading Bots using C++

UI/UX Design Tools using C++

Vector Databases using C++

Video Editing Software using C++

Web Browsers using C++

Expensify

Simplify expense management for businesses of all sizes

Stars
4,845
Forks
3,743
Last commit
7 hours ago

Automate expense reporting, reimbursements, and corporate card management with real-time data sync and powerful integrations.

Tuta

Secure email, calendar and contacts with end-to-end encryption

Stars
7,541
Forks
617
Last commit
3 days ago

Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.

Open Source Alternative to:

Microsoft 365

GIMP

Professional image editing without the price tag

Stars
6,127
Forks
862
Last commit
6 hours ago

Free, open-source image editor with professional tools for photo manipulation, digital art creation, and graphic design. Cross-platform support.

Open Source Alternative to:

Photoshop

Grit

Automated technical debt reduction for software teams

Stars
4,488
Forks
123
Last commit
2 days ago

Grit uses machine learning and static analysis to automatically generate pull requests that clean up code and migrate to the latest frameworks.

Kdenlive

Professional video editing without the price tag

Stars
4,983
Forks
409
Last commit
6 hours ago

Cross-platform non-linear video editor offering professional features for free. Edit videos on Linux, Windows, macOS, and BSD with advanced tools and effects.

Open Source Alternative to:

CapCut

Collabora Online

Open-source document editing suite for secure collaboration

Stars
3,198
Forks
1,006
Last commit
3 days ago

Powerful online document editor with Microsoft Office compatibility. Integrate into your infrastructure or use trusted hosting partners for secure team collaboration.

Open Source Alternative to:

Microsoft 365

Memgraph

High-performance graph computing for scalable data analysis

Stars
3,968
Forks
222
Last commit
11 hours ago

Memgraph is a scalable, in-memory graph database solution offering high-performance computing and Neo4j compatibility.

Open Source Alternative to:

MongoDB

LibreOffice

Free office suite with Microsoft compatibility

Stars
3,897
Forks
824
Last commit
16 hours ago

Complete free office suite compatible with Microsoft formats (.doc, .docx, .xls, .xlsx, .ppt, .pptx). Open source alternative with regular updates.

Open Source Alternative to:

Microsoft 365

RawTherapee

Professional raw photo processing made free and powerful

Stars
3,919
Forks
392
Last commit
14 hours ago

Free, cross-platform raw image processor with 32-bit floating point engine, advanced demosaicing algorithms, and professional-grade editing tools for photographers.

Open Source Alternative to:

Adobe Lightroom

Anthias

Transform any TV into professional digital signage

Stars
3,501
Forks
707
Last commit
6 hours ago

Free open-source digital signage software that turns Raspberry Pi or old PCs into powerful display solutions. Manage images, videos, and web content easily.

Open Source Alternative to:

OptiSigns

Sol

Fast and beautiful launcher for quick access to apps and tools

Stars
2,884
Forks
154
Last commit
13 hours ago

A modern macOS launcher that provides instant access to applications, utilities, and system functions through an elegant and efficient interface.

Open Source Alternative to:

Raycast

Checkmk

Complete IT infrastructure monitoring made simple

Stars
2,259
Forks
533
Last commit
17 hours ago

Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.

Open Source Alternative to:

DataDog

Timeplus

Real-time stream processing made simple and affordable

Stars
2,197
Forks
107
Last commit
3 days ago

Timeplus is a lightweight, powerful, and cost-efficient stream processing platform for real-time analytics, deployed as a single binary.

Icinga

Open source monitoring for complex IT infrastructure

Stars
2,199
Forks
605
Last commit
3 days ago

Monitor networks, servers, and cloud environments with flexible open-source solution. Custom checks, fast alerts, and complete infrastructure control.

Open Source Alternative to:

DataDog

Amical

Type 10x faster with AI-powered voice dictation

Stars
1,193
Forks
98
Last commit
15 days ago

Open source AI dictation app that transforms speech to text with context-aware formatting. Fast, accurate transcription for meetings, notes, and hands-free typing.

Open Source Alternative to:

Wispr Flow

Apache Cloudberry

Unlock Data's Potential with Open Source Power

Stars
1,213
Forks
213
Last commit
3 days ago

Leverage advanced analytics with a modern PostgreSQL kernel. 100% open source for robust data solutions.

Open Source Alternative to:

Snowflake

Jarvis

Dictate 4x faster than typing with natural voice commands

Stars
499
Forks
80
Last commit
9 days ago

Transform your computer interaction with natural voice commands. Dictate 4x faster than typing, control any app hands-free, and boost productivity instantly.

Open Source Alternative to:

Wispr Flow

Browser Operator

Open-source AI browser for intelligent web automation

Stars
476
Forks
76
Last commit
1 month ago

Privacy-focused AI browser with intelligent agents for research, analysis, and workflow automation. Features unified memory, compliance guardrails, and seamless integrations.

Open Source Alternative to:

Browserbase

Midori Browser

Fast, secure, and privacy-focused web browsing

Stars
295
Forks
18
Last commit
14 hours ago

Midori Browser is a lightweight, fast, and secure browser that protects users' privacy, available for Windows, Linux, and Android.

Open Source Alternative to:

Firefox

Cody

AI-powered coding assistant for enterprise development teams

Stars
82
Forks
29
Last commit
2 days ago

Advanced AI coding assistant that helps enterprise teams write, fix, and maintain code with enhanced accuracy and consistency across large codebases

Open Source Alternative to:

Claude Code