Free to list, always.No paid rankings. Every recommendation explains its trade-offs.
OpenSourceChoice
Submit a project
OpenSourceChoice

Open-source projects built with C.

Inspect repositories, licenses, activity, and alternatives across the C tech stack.

12 projects connectedStack matches come from catalog tech_stack metadata.
TensorFlow
United StatesApache-2.0

An Open Source Machine Learning Framework for Everyone

AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.2 projects#C++Projects tagged with this topic in the verified catalog.8 projectsdeep-learningProjects tagged with this topic in the verified catalog.2 projectsdeep-neural-networksProjects tagged with this topic in the verified catalog.1 projectAI-nativeThis project includes AI-native capability signals in the catalog metadata.3 AI-native projectsAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 15 recorded momentum↗ 15 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 12, 2026.Browse trending →
FreePricingFree and open sourceFree199.7K76.3K5 hours ago
Alternatives toAndroid StudioAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+2
scrcpy
FranceApache-2.0

Display and control your Android device

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.6 projects#CProjects tagged with this topic in the verified catalog.4 projectsandroidProjects tagged with this topic in the verified catalog.2 projectsffmpegProjects tagged with this topic in the verified catalog.2 projectsTeamViewerProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 73 recorded momentum↗ 73 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 12, 2026.Browse trending →
FreePricingFree and open sourceFree149.4K13.7K15 hours ago
Alternatives toTeamViewerTeamViewerProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
PowerToys
United StatesMIT

Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows

ProductivityOpen-source projects grouped in this category for discovery and comparison.1 project#CProjects tagged with this topic in the verified catalog.4 projectsadvanced-pasteProjects tagged with this topic in the verified catalog.1 projectcolor-pickerProjects tagged with this topic in the verified catalog.1 projectAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 16 recorded momentum↗ 16 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 12, 2026.Browse trending →
FreePricingFree and open sourceFree138.6K8.6K3 hours ago
Alternatives toAndroid StudioAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+2
llama.cpp
BulgariaMIT

LLM inference in C/C++

AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.2 projects#C++Projects tagged with this topic in the verified catalog.8 projectsggmlProjects tagged with this topic in the verified catalog.1 projectAI-nativeThis project includes AI-native capability signals in the catalog metadata.3 AI-native projectsAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 131 recorded momentum↗ 131 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 12, 2026.Browse trending →
FreePricingFree and open sourceFree127.9K23.1K34 minutes ago
Alternatives toAndroid StudioAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+2
React Native
United StatesMIT

A framework for building native applications using React

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.6 projects#C++Projects tagged with this topic in the verified catalog.8 projectsandroidProjects tagged with this topic in the verified catalog.2 projectsapp-frameworkProjects tagged with this topic in the verified catalog.1 projectXcodeProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 11 recorded momentum↗ 11 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 12, 2026.Browse trending →
FreePricingFree and open sourceFree126.6K25.3K15 hours ago
Alternatives toXcodeXcodeProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+1
Electron
United StatesMIT

:electron: Build cross-platform desktop apps with JavaScript, HTML, and CSS

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.6 projects#C++Projects tagged with this topic in the verified catalog.8 projectsc-plus-plusProjects tagged with this topic in the verified catalog.4 projectschromeProjects tagged with this topic in the verified catalog.1 projectAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 12 recorded momentum↗ 12 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 12, 2026.Browse trending →
FreePricingFree and open sourceFree123K17.5K12 minutes ago
Alternatives toAndroid StudioAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+2
Godot
ArgentinaMIT

Godot Engine – Multi-platform 2D and 3D game engine

Content & CollaborationOpen-source projects grouped in this category for discovery and comparison.2 projects#C++Projects tagged with this topic in the verified catalog.8 projectsGithub ActionsProjects tagged with this topic in the verified catalog.2 projectsJavaScriptProjects tagged with this topic in the verified catalog.1 projectUnreal EngineProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 35 recorded momentum↗ 35 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 12, 2026.Browse trending →
FreePricingFree and open sourceFree117K26.7K9 hours ago
Alternatives toUnreal EngineUnreal EngineProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+1
Windows Terminal
MIT

The new Windows Terminal and the original Windows console host, all in the same place!

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.6 projects#C++Projects tagged with this topic in the verified catalog.8 projectscmdProjects tagged with this topic in the verified catalog.1 projectcommand-lineProjects tagged with this topic in the verified catalog.1 projectAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 4 recorded momentum↗ 4 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 12, 2026.Browse trending →
FreePricingFree and open sourceFree104.9K9.6K5 hours ago
Alternatives toAndroid StudioAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+2
OpenCV
Apache-2.0

Open Source Computer Vision Library

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.6 projects#C++Projects tagged with this topic in the verified catalog.8 projectsc-plus-plusProjects tagged with this topic in the verified catalog.4 projectscomputer-visionProjects tagged with this topic in the verified catalog.1 projectAI-nativeThis project includes AI-native capability signals in the catalog metadata.3 AI-native projectsAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 10 recorded momentum↗ 10 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 12, 2026.Browse trending →
FreePricingFree and open sourceFree90.8K57K14 hours ago
Alternatives toAndroid StudioAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+2
Bitcoin Core
MIT

Bitcoin Core integration/staging tree

Developer ToolsOpen-source projects grouped in this category for discovery and comparison.6 projects#C++Projects tagged with this topic in the verified catalog.8 projectsbitcoinProjects tagged with this topic in the verified catalog.1 projectc-plus-plusProjects tagged with this topic in the verified catalog.4 projectsAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 12 recorded momentum↗ 12 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 6, 2026.Browse trending →
FreePricingFree and open sourceFree90.1K39.4K17 hours ago
Alternatives toAndroid StudioAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+2
Redis
United StatesLicense not declared

For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.

Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.1 project#CProjects tagged with this topic in the verified catalog.4 projectscacheProjects tagged with this topic in the verified catalog.1 projectcachingProjects tagged with this topic in the verified catalog.1 projectAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
↗ 759 recorded momentum↗ 759 recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 7, 2026.Browse trending →
Free–CustomPricingOpen-source Redis available; Redis Cloud / Enterprise commercialFree–Custom76.3K24.8K3 days ago
Alternatives toAndroid StudioAndroid StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+2
OBS Studio
United StatesGPL-2.0

OBS Studio - Free and open source software for live streaming and screen recording

Content & CollaborationOpen-source projects grouped in this category for discovery and comparison.2 projects#CProjects tagged with this topic in the verified catalog.4 projectsGithub ActionsProjects tagged with this topic in the verified catalog.2 projectsNodeJSProjects tagged with this topic in the verified catalog.2 projectsScreen StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative
★ 4.8 (4)↗ 2K recorded momentum↗ 2K recorded momentumRecorded star momentum from the latest GitHub metrics sync · snapshot Sep 7, 2026.Browse trending →
FreePricingFree and open sourceFree75.9K10.1K2 days ago
Alternatives toScreen StudioScreen StudioProprietary product with documented open-source alternatives cataloged on OpenSourceChoice. Compare licenses, reposit…1 alternative+4
Showing 12 of 12