Open Source Projects using CSS
A curated collection of the 580 best open source software using CSS. Find the most popular and trending open source projects to learn from, contribute to, or use in your own projects.
Secure access management for modern IT infrastructure
Stars
31,415Last commit
14 hours agoLicense
GPL-3.0
Open-source privileged access management solution offering secure, browser-based access to SSH, RDP, Kubernetes, databases and remote applications.
Open Source Alternative to:
Transform natural language into SQL queries with AI
Stars
27,994Last commit
13 hours agoLicense
Apache-2.0
AI-powered SQL client that converts natural language to SQL queries. Supports MySQL, Redis, MongoDB with Text2SQL, BI dashboards, and secure database management.
Open Source Alternative to:
Multi-model AI workspace with org-wide skill sharing
Stars
22,791Last commit
10 hours agoLicense
MIT
Desktop app for teams to run AI agents across 50+ LLMs, share skills and MCP servers org-wide, and automate browser tasks with your own keys.
Open Source Alternative to:
Full-stack Python platform for web apps and internal tools
Stars
28,836Last commit
9 hours agoLicense
Apache-2.0
Build, iterate, and deploy full-stack web apps entirely in Python. Reflex combines an AI app builder, a full-stack framework, and one-click deployment in one platform.
Open Source Alternative to:
Private, secure video calls with no account needed
Stars
29,778Last commit
9 hours agoLicense
Apache-2.0
Host encrypted video conferences directly in your browser, deploy on your own servers, or integrate into applications - all with this powerful open source platform.
Open Source Alternative to:
Secure, private photo storage and sharing solution
Stars
28,434Last commit
10 hours agoLicense
AGPL-3.0
End-to-end encrypted cloud storage for photos and videos, offering privacy, security, and seamless cross-device syncing.
Open Source Alternative to:
GPU-accelerated terminal built for power users
Stars
34,507Last commit
17 hours agoLicense
GPL-3.0
High-performance terminal emulator with GPU acceleration, graphics support, and advanced scripting capabilities for developers and system administrators.
Open Source Alternative to:
AI-powered coding made simple and efficient
Stars
19,723Last commit
16 hours agoLicense
MIT
Advanced AI coding assistant that enhances development workflow with intelligent code suggestions, automated debugging, and seamless integration.
Open Source Alternative to:
Secure secret management for modern development teams
Stars
28,866Last commit
10 hours agoLicense
MIT
End-to-end encrypted secret management platform for seamless integration and enhanced security in development workflows.
Open Source Alternative to:
Organized team chat for distributed teams
Stars
25,738Last commit
11 hours agoLicense
Apache-2.0
Zulip is an open-source team chat app that uses threaded conversations to keep communication organized and efficient for teams of all sizes.
Open Source Alternative to:
Branded short links with analytics and conversion tracking
Stars
24,540Last commit
9 hours agoLicense
AGPL-3.0
Link management platform for marketing teams with custom domains, UTM builder, A/B testing, geo-targeting, QR codes, and real-time conversion analytics.
Open Source Alternative to:
Visual React editor with real-time code updates
Stars
26,526Last commit
1 month agoLicense
Apache-2.0
Onlook is an open-source desktop app that allows you to visually edit React applications and automatically write changes back to your code in real-time.
Open Source Alternative to:
Build and deploy AI agents with advanced memory
Stars
24,319Last commit
5 days agoLicense
Apache-2.0
Letta is an open-source platform for creating AI agents with built-in memory, reasoning, and support for thousands of tools.
Open Source Alternative to:
Private messaging with end-to-end encryption
Stars
29,227Last commit
1 day agoLicense
AGPL-3.0
Secure messaging app with state-of-the-art encryption, voice/video calls, group chats, and file sharing. No ads, trackers, or data collection.
Open Source Alternative to:
Automate workflows with no-code integration platform
Stars
23,931Last commit
10 hours agoLicense
MIT
Open-source integration platform for seamless workflow automation. Connect apps, automate tasks, and boost productivity effortlessly.
Open Source Alternative to:
Zero Trust networking with WireGuard-based secure connectivity
Stars
28,543Last commit
9 hours agoLicense
Unknown
Open source platform combining WireGuard overlay networks with Zero Trust access controls. Features SSO, MFA, device posture checks, and granular policies for secure remote connectivity.
Open Source Alternative to:
Open source Laravel eCommerce platform for modern businesses
Stars
27,987Last commit
12 hours agoLicense
MIT
A flexible eCommerce platform built on Laravel that enables businesses to create marketplaces, mobile apps, and headless commerce solutions
Open Source Alternative to:
Decentralized social networking for the Web3 era
Stars
29,384Last commit
3 months agoLicense
GPL-3.0
A blockchain-powered social platform offering censorship-resistant content sharing, user-owned data, and innovative monetization options.
Open Source Alternative to:
Build unlimited AI apps locally with zero vendor lock-in
Stars
21,292Last commit
9 hours agoLicense
Apache-2.0
Create full-stack AI applications using any model or tool. Run entirely on your machine with complete privacy, flexibility, and control over your code.
Open Source Alternative to:
Self-hosted mini-PaaS for deploying applications easily
Stars
32,107Last commit
11 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, customize, and manage your website with ease
Stars
21,350Last commit
1 day agoLicense
Unknown
A versatile, user-friendly platform for building and managing websites, from simple blogs to complex e-commerce stores.
Open Source Alternative to:
Connect, query, visualize, and share your data
Stars
28,759Last commit
2 days agoLicense
BSD-2-Clause
Redash is an open-source data visualization and analytics platform that helps teams make sense of their data through SQL queries and interactive dashboards.
Open Source Alternative to:
Privacy-focused, lightweight web analytics
Stars
28,681Last commit
13 hours agoLicense
AGPL-3.0
Simple, open-source web analytics tool that respects user privacy and provides valuable insights without compromising data protection.
Open Source Alternative to:
AI agent that autonomously handles real-world tasks
Stars
20,124Last commit
9 hours agoLicense
Apache-2.0
Open source AI assistant that executes complex tasks from market research to travel planning through natural conversation, with full transparency and community-driven development.
Open Source Alternative to:
Build powerful web apps without complex coding
Stars
28,227Last commit
10 hours agoLicense
Unknown
Low-code platform for creating custom business applications quickly. Design, automate, and deploy with ease.
Open Source Alternative to:
Time-series database and historian for industrial data
Stars
25,068Last commit
5 days agoLicense
AGPL-3.0
High-performance time-series database with industrial data management, built-in stream analytics, and AI-driven anomaly detection for operational environments.
Open Source Alternative to:
Automate any website workflow with AI and computer vision
Stars
22,802Last commit
21 hours agoLicense
AGPL-3.0
Transform manual browser tasks into automated workflows using AI. Handle complex forms, CAPTCHAs, 2FA, and data extraction across any website at scale.
Open Source Alternative to:
Zero trust network access that's better than VPN
Stars
22,396Last commit
12 hours agoLicense
AGPL-3.0
Deploy zero trust access to infrastructure, self-hosted apps, and SaaS tools in days. Identity-aware security with seamless user experience.
Open Source Alternative to:
GPU-accelerated terminal emulator with multiplexing across all platforms
Stars
28,467Last commit
19 hours agoLicense
MIT
Cross-platform terminal emulator and multiplexer with GPU acceleration, true color support, and Lua configuration. Runs on Linux, macOS, Windows, FreeBSD, and NetBSD.
Open Source Alternative to:
Local-first, Git-native personal knowledge base with AI
Stars
19,524Last commit
22 hours agoLicense
AGPL-3.0
A free, open source note-taking app built on plain Markdown files, Git version control, and direct AI model integration. No account required.
Open Source Alternative to:
Cross-platform, secure password manager
Stars
28,471Last commit
8 days agoLicense
Unknown
KeePassXC is an open-source password manager that securely stores and manages sensitive information across Windows, macOS, and Linux.
Open Source Alternative to:
24/7 screen and audio recorder with AI memory search
Stars
21,133Last commit
9 hours agoLicense
MIT
Records your screen and microphone locally, transcribes meetings automatically, and lets you query your entire work history with AI or automate workflows through app integrations.
Open Source Alternative to:
Open-source data integration for modern teams
Stars
21,927Last commit
9 hours agoLicense
Elastic-2.0
Seamlessly sync data from any source to any destination with a flexible, extensible platform that grows with your data needs.
Open Source Alternative to:
Take control of your identity with a secure, flexible solution
Stars
25,019Last commit
10 hours agoLicense
MIT
authentik is an open-source identity provider that offers self-hosted authentication, authorization, and user management for businesses of all sizes.
Open Source Alternative to:
Self-hosted wiki with AI, compliance, and real-time editing
Stars
21,420Last commit
11 hours agoLicense
AGPL-3.0
Self-hosted wiki platform for enterprise teams with real-time collaboration, built-in AI, SSO, RBAC permissions, and compliance support for ITAR, FedRAMP, and GDPR.
Open Source Alternative to:
AI-powered DevSecOps for faster, secure software delivery
Stars
24,533Last commit
12 hours agoLicense
MIT
A comprehensive AI-powered DevSecOps platform that integrates development, security, and operations, streamlining software delivery and enhancing productivity.
Open Source Alternative to:
AI agents that autonomously fix code and resolve GitHub issues
Stars
20,090Last commit
3 days agoLicense
MIT
State-of-the-art AI agent that uses language models like GPT-4o to autonomously solve GitHub issues, fix bugs, and implement features with configurable YAML setup.
Open Source Alternative to:
Self-hosted CRM for enhanced business relationships
Stars
23,694Last commit
18 hours agoLicense
MIT
Open source customer relationship management platform with sales tracking, marketing automation, and customizable workflows for businesses of all sizes.
Open Source Alternative to:
Flexible database meets intuitive spreadsheet interface
Stars
21,680Last commit
13 hours agoLicense
AGPL-3.0
Open-source platform combining powerful database capabilities with a user-friendly spreadsheet interface for efficient data management and collaboration.
Open Source Alternative to:
Create 2D and 3D games without coding, powered by AI assistance
Stars
25,810Last commit
10 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:
Infrastructure as code in your favorite language
Stars
25,592Last commit
10 hours agoLicense
Apache-2.0
Pulumi enables developers to define and manage cloud infrastructure using familiar programming languages instead of domain-specific languages.
Open Source Alternative to:
Revolutionize your Git workflow with simultaneous branches
Stars
21,538Last commit
10 hours agoLicense
FSL-1.1-MIT
GitButler is a powerful Git client that enables seamless work on multiple branches concurrently, enhancing your existing workflow.
Open Source Alternative to:
c15t – Open-source cookie banner, built for control and lightening fast modern web apps.
c15t
Sent
InfluxDB