Open Source Projects using CircleCI

A curated collection of the 19 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.

LiteLLM

Unified gateway for 100+ LLMs with spend tracking

Stars
45,751
Forks
7,780
Last commit
8 hours ago

Manage authentication, load balancing, and cost tracking across 100+ LLMs through a single OpenAI-compatible gateway. Trusted by Netflix and enterprise teams.

Open Source Alternative to:

LangChain

Penpot

Design freedom meets open-source collaboration

Stars
47,267
Forks
2,889
Last commit
9 hours ago

Versatile design and prototyping platform for teams. Create, collaborate, and bring your ideas to life with powerful vector editing tools.

Open Source Alternative to:

Canva

Chatwoot

Elevate customer conversations with open-source excellence

Stars
29,033
Forks
7,155
Last commit
8 hours ago

An open-source customer engagement platform that unifies multiple channels, enabling businesses to provide seamless support and build lasting relationships.

Open Source Alternative to:

Manychat

Dragonfly

Blazing-fast in-memory data store for modern applications

Stars
30,444
Forks
1,175
Last commit
10 hours ago

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:

Redis

InfluxDB

Purpose-built database for time series data management

Stars
31,485
Forks
3,704
Last commit
4 days ago

High-performance database optimized for collecting, storing, and analyzing time-stamped data in real-time across cloud, on-premises, or edge environments.

Open Source Alternative to:

MongoDB

Dokku

Self-hosted mini-PaaS for deploying applications easily

Stars
31,852
Forks
2,029
Last commit
12 hours ago

A Docker-powered platform that lets you deploy Heroku-compatible applications via Git, with buildpack support and container isolation.

Open Source Alternative to:

Vercel

Kap

Effortless screen recording for macOS

Stars
19,209
Forks
875
Last commit
1 year ago

Capture, edit, and share your screen with ease. Create stunning GIFs and videos for tutorials, demos, and bug reports.

Open Source Alternative to:

Loom

SuperTokens

Secure, customizable authentication for your applications

Stars
15,030
Forks
661
Last commit
12 hours ago

Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.

Open Source Alternative to:

Clerk

LanguageTool

AI-powered grammar checker for 30+ languages

Stars
14,437
Forks
1,508
Last commit
10 hours ago

Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.

Open Source Alternative to:

Grammarly

Blinko

AI-Powered Note Taking App

Stars
10,248
Forks
724
Last commit
21 days ago

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:

Notion

Cosmos Server

Self-hosted cloud platform with automated security

Stars
5,889
Forks
220
Last commit
13 days ago

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:

Umbrel

Grit

Automated technical debt reduction for software teams

Stars
4,490
Forks
121
Last commit
5 days ago

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

Ever Gauzy

Comprehensive open-source business management platform

Stars
3,674
Forks
764
Last commit
12 hours ago

All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations

Open Source Alternative to:

HubSpot

Chartbrew

Create stunning data visualizations with ease

Stars
3,912
Forks
438
Last commit
12 hours ago

A powerful, open-source platform for building interactive dashboards and charts from multiple data sources without coding.

Open Source Alternative to:

Power BI

Opengrep

Open-source code security engine for developers

Stars
2,490
Forks
200
Last commit
10 hours ago

Opengrep is a community-driven fork of SemgrepCE, providing accessible static code analysis and security scanning for developers.

Icinga

Open source monitoring for complex IT infrastructure

Stars
2,201
Forks
605
Last commit
11 hours 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

Ever Teams

Real-time work and project management platform

Stars
501
Forks
97
Last commit
11 days ago

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:

Jira

Gravitee

Unified API, event, and AI agent management platform

Stars
411
Forks
111
Last commit
8 hours ago

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:

Postman

Midori Browser

Fast, secure, and privacy-focused web browsing

Stars
297
Forks
19
Last commit
22 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

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Browse tools using CircleCI by category

AI API Key Protection Tools using CircleCI

AI Gateways using CircleCI

AI Integration Platforms using CircleCI

API Infrastructure Tools using CircleCI

Application Security Tools using CircleCI

Authentication & SSO Providers using CircleCI

BI Platforms using CircleCI

Browser Extensions using CircleCI

Code Transformation Tools using CircleCI

Collaborative Workspaces using CircleCI

CRM Systems using CircleCI

Customer Communication Platforms using CircleCI

Data Visualization Tools using CircleCI

ERP Systems using CircleCI

Helpdesk Software using CircleCI

HR Management Systems (HRMS) using CircleCI

In-Memory Databases using CircleCI

Infrastructure Monitoring Tools using CircleCI

Live Chat & Messaging Tools using CircleCI

Low-Code/No-Code Platforms using CircleCI

Note-Taking Tools using CircleCI

Online Design Tools using CircleCI

PaaS & Deployment Tools using CircleCI

Personal Knowledge Management (PKM) Tools using CircleCI

Productivity & Utilities using CircleCI

Project Management Suites using CircleCI

Screen Recording Tools using CircleCI

Server & VM Management Tools using CircleCI

Static Analysis Tools using CircleCI

Time Tracking Tools using CircleCI

UI/UX Design Tools using CircleCI

Vulnerability Scanning Tools using CircleCI

Web Browsers using CircleCI

LiteLLM

Unified gateway for 100+ LLMs with spend tracking

Stars
45,751
Forks
7,780
Last commit
8 hours ago

Manage authentication, load balancing, and cost tracking across 100+ LLMs through a single OpenAI-compatible gateway. Trusted by Netflix and enterprise teams.

Open Source Alternative to:

LangChain

Penpot

Design freedom meets open-source collaboration

Stars
47,267
Forks
2,889
Last commit
9 hours ago

Versatile design and prototyping platform for teams. Create, collaborate, and bring your ideas to life with powerful vector editing tools.

Open Source Alternative to:

Canva

Chatwoot

Elevate customer conversations with open-source excellence

Stars
29,033
Forks
7,155
Last commit
8 hours ago

An open-source customer engagement platform that unifies multiple channels, enabling businesses to provide seamless support and build lasting relationships.

Open Source Alternative to:

Manychat

Dragonfly

Blazing-fast in-memory data store for modern applications

Stars
30,444
Forks
1,175
Last commit
10 hours ago

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:

Redis

InfluxDB

Purpose-built database for time series data management

Stars
31,485
Forks
3,704
Last commit
4 days ago

High-performance database optimized for collecting, storing, and analyzing time-stamped data in real-time across cloud, on-premises, or edge environments.

Open Source Alternative to:

MongoDB

Dokku

Self-hosted mini-PaaS for deploying applications easily

Stars
31,852
Forks
2,029
Last commit
12 hours ago

A Docker-powered platform that lets you deploy Heroku-compatible applications via Git, with buildpack support and container isolation.

Open Source Alternative to:

Vercel

Kap

Effortless screen recording for macOS

Stars
19,209
Forks
875
Last commit
1 year ago

Capture, edit, and share your screen with ease. Create stunning GIFs and videos for tutorials, demos, and bug reports.

Open Source Alternative to:

Loom

SuperTokens

Secure, customizable authentication for your applications

Stars
15,030
Forks
661
Last commit
12 hours ago

Open-source authentication solution offering flexible, self-hosted user management with advanced features and easy integration.

Open Source Alternative to:

Clerk

LanguageTool

AI-powered grammar checker for 30+ languages

Stars
14,437
Forks
1,508
Last commit
10 hours ago

Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.

Open Source Alternative to:

Grammarly

Blinko

AI-Powered Note Taking App

Stars
10,248
Forks
724
Last commit
21 days ago

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:

Notion

Cosmos Server

Self-hosted cloud platform with automated security

Stars
5,889
Forks
220
Last commit
13 days ago

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:

Umbrel

Grit

Automated technical debt reduction for software teams

Stars
4,490
Forks
121
Last commit
5 days ago

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

Ever Gauzy

Comprehensive open-source business management platform

Stars
3,674
Forks
764
Last commit
12 hours ago

All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations

Open Source Alternative to:

HubSpot

Chartbrew

Create stunning data visualizations with ease

Stars
3,912
Forks
438
Last commit
12 hours ago

A powerful, open-source platform for building interactive dashboards and charts from multiple data sources without coding.

Open Source Alternative to:

Power BI

Opengrep

Open-source code security engine for developers

Stars
2,490
Forks
200
Last commit
10 hours ago

Opengrep is a community-driven fork of SemgrepCE, providing accessible static code analysis and security scanning for developers.

Icinga

Open source monitoring for complex IT infrastructure

Stars
2,201
Forks
605
Last commit
11 hours 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

Ever Teams

Real-time work and project management platform

Stars
501
Forks
97
Last commit
11 days ago

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:

Jira

Gravitee

Unified API, event, and AI agent management platform

Stars
411
Forks
111
Last commit
8 hours ago

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:

Postman

Midori Browser

Fast, secure, and privacy-focused web browsing

Stars
297
Forks
19
Last commit
22 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