Top Open Source Projects Built With CSS in 2026
A curated collection of the 252 best free and open-source projects built using CSS. Discover popular repositories, architecture patterns, and trending software in 2026.
Zola
Open chat interface for all your AI models
Stars1,531Last commit8mo agoLicenseApache-2.0
Zulip
Organized team chat for distributed teams
Stars25,775Last commit11d agoLicenseApache-2.0
Zen Browser
Privacy-focused, feature-rich web browser
Stars44,112Last commit11d agoLicenseMPL-2.0
Zenblog
Headless blogging CMS with Notion-style editor
Stars253Last commit5mo agoLicenseAGPL-3.0Your Next Store (YNS)
Fast, modern commerce platform with AI-powered setup
Stars5,483Last commit10d agoLicenseMIT
Yaak
Local-first API client for HTTP, GraphQL, gRPC, and more
Stars19,117Last commit12d agoLicenseMIT
Zellij
Terminal workspace with floating panes and layouts
Stars35,144Last commit11d agoLicenseMIT
WaveTerm
AI-native terminal with workspace superpowers
Stars22,116Last commit1mo agoLicenseApache-2.0
Worklenz
Free and open source project management tool
Stars3,151Last commit13d agoLicenseAGPL-3.0
Wraft
Open-source document lifecycle management platform
Stars164Last commit2mo agoLicenseAGPL-3.0
Synara
Local-first workspace for parallel coding agents
Stars1,608Last commit17d agoLicenseMIT
Comp AI
Automate SOC 2, ISO 27001, HIPAA & GDPR compliance
Stars1,899Last commit28d agoLicenseAGPL-3.0
Tldraw
Free instant collaborative whiteboard for all devices
Stars49,987Last commit10d agoLicenseOpen SourceUnKey
Unified API platform for deployment and observability
Stars5,423Last commit11d agoLicenseOpen Source
Tirreno
Open source security framework for threat monitoring
Stars1,503Last commit23d agoLicenseAGPL-3.0
