Open Source Projects using CircleCI
A curated collection of the 20 best open source software using CircleCI. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
LLM gateway for auth, load balancing, and spend tracking
Stars
58,047Last commit
5 hours agoLicense
Unknown
Acts as a unified proxy across 100+ LLMs, normalizing them to the OpenAI format while handling virtual keys, budgets, rate limits, fallbacks, and cost tracking.
Open Source Alternative to:
Run open-source AI models privately on your own device
Stars
77,385Last commit
1 year agoLicense
MIT
GPT4All runs open-source language models locally on Windows, macOS, and Linux with no cloud dependency, keeping your data on your machine.
Open Source Alternative to:
Open-source UI design and prototyping for product teams
Stars
59,577Last commit
13 hours agoLicense
MPL-2.0
Design, prototype, and hand off to developers in one platform. Supports design systems, tokens, flexible layouts, and AI workflows with real CSS/HTML output.
Open Source Alternative to:
Omnichannel customer support with a built-in AI assistant
Stars
36,497Last commit
14 hours agoLicense
MIT
Manage customer conversations across live chat, email, WhatsApp, Instagram, and more from one inbox, with an AI assistant that suggests replies and automates common questions.
Open Source Alternative to:
Blazing-fast in-memory data store for modern applications
Stars
31,397Last commit
6 hours agoLicense
Unknown
Dragonfly is a high-performance, Redis-compatible in-memory data store that delivers up to 25x more throughput and 80% lower costs than legacy solutions.
Open Source Alternative to:
Purpose-built time series database for real-time systems
Stars
31,731Last commit
8 hours agoLicense
Apache-2.0
InfluxDB handles high-velocity, high-resolution time series data at scale, built for telemetry, edge devices, IoT, and physical AI workloads.
Open Source Alternative to:
Self-hosted mini-PaaS for deploying applications easily
Stars
32,123Last commit
8 hours agoLicense
MIT
A Docker-powered platform that lets you deploy Heroku-compatible applications via Git, with buildpack support and container isolation.
Open Source Alternative to:
Create 2D and 3D games without coding, powered by AI assistance
Stars
26,201Last commit
8 hours agoLicense
Unknown
Free, open-source game engine with visual event system, AI tutor, and one-click publishing to Steam, iOS, Android, and web platforms.
Open Source Alternative to:
Secure, customizable authentication for your applications
Stars
15,294Last commit
11 hours agoLicense
Unknown
Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.
Open Source Alternative to:
AI-Powered Note Taking App
Stars
10,987Last commit
9 days agoLicense
GPL-3.0
The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.
Open Source Alternative to:
AI-powered grammar checker for 30+ languages
Stars
14,965Last commit
18 hours agoLicense
LGPL-2.1
Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.
Open Source Alternative to:
Effortless screen recording for macOS
Stars
19,349Last commit
2 years agoLicense
MIT
Capture, edit, and share your screen with ease. Create stunning GIFs and videos for tutorials, demos, and bug reports.
Open Source Alternative to:
Self-hosted cloud platform with automated security
Stars
6,141Last commit
5 days agoLicense
Unknown
Complete self-hosting solution with automated maintenance, Smart-Shield protection, anti-DDoS, SSO authentication, and VPN access for secure private cloud management.
Open Source Alternative to:
Comprehensive open-source business management platform
Stars
4,368Last commit
6 hours agoLicense
AGPL-3.0
All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations
Open Source Alternative to:
Create stunning data visualizations with ease
Stars
4,053Last commit
2 days agoLicense
MIT
A powerful, open-source platform for building interactive dashboards and charts from multiple data sources without coding.
Open Source Alternative to:
Open-source code security engine for developers
Stars
3,040Last commit
8 hours agoLicense
LGPL-2.1
Opengrep is a community-driven fork of SemgrepCE, providing accessible static code analysis and security scanning for developers.
Open source monitoring for complex IT infrastructure
Stars
2,236Last commit
9 hours agoLicense
GPL-3.0
Monitor networks, servers, and cloud environments with flexible open-source solution. Custom checks, fast alerts, and complete infrastructure control.
Open Source Alternative to:
Real-time work and project management platform
Stars
545Last commit
2 days agoLicense
AGPL-3.0
Ever Teams offers an all-in-one solution for work management, time tracking, and team collaboration with integrations for popular tools.
Open Source Alternative to:
Unified API, event, and AI agent management platform
Stars
449Last commit
5 hours agoLicense
Apache-2.0
Full-lifecycle API management platform that unifies synchronous and asynchronous ecosystems. Manage APIs, event streams, and AI agents with enterprise security and 4x faster gateway performance.
Open Source Alternative to:
Fast, secure, and privacy-focused web browsing
Stars
386Last commit
20 hours agoLicense
MPL-2.0
Midori Browser is a lightweight, fast, and secure browser that protects users' privacy, available for Windows, Linux, and Android.
Open Source Alternative to:
Sent – Messaging Infrastructure for Developers. One API for SMS, WhatsApp, and RCS across 190+ countries.
Sent
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