Top Open Source Projects using Express
A curated collection of the 137 best free and open-source projects built using Express. Discover popular repositories, architecture patterns, and trending software in 2026.
Worklenz
AGPL-3.0Worklenz is a comprehensive project management platform that helps agencies organize tasks, track resources, and boost productivity.
Comp AI
AGPL-3.0AI-driven compliance platform that automates evidence collection, policy generation, and continuous monitoring across 580+ integrations for SOC 2, ISO 27001, HIPAA, and GDPR.
Chroma
Apache-2.0Open-source vector database designed for AI applications. Store, search, and retrieve embeddings with semantic similarity matching and metadata filtering.
SurfSense
NOASSERTIONSelf-hostable NotebookLM alternative that lets teams build searchable knowledge bases from diverse sources, with support for any LLM and no data limits.
Stormkit
NOASSERTIONSelf-hosted platform for web applications offering automated CI/CD pipelines, multiple environments, and Git integration - with 47% infrastructure cost savings.
Skyvern
AGPL-3.0Transform manual browser tasks into automated workflows using AI. Handle complex forms, CAPTCHAs, 2FA, and data extraction across any website at scale.
OpenSign
NOASSERTIONA powerful, open-source e-signature solution offering customization, integration, and enhanced security for businesses of all sizes.
Notifuse
AGPL-3.0Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.
Maxun
AGPL-3.0Turn any website into structured data using a visual recorder, natural language prompts, or API. Includes proxy rotation, scheduling, and webhook integrations.
Instant
Apache-2.0Instant is a database solution for building real-time and offline-enabled applications, simplifying the development of collaborative products.
Harness
Apache-2.0Streamline code delivery with an open-source CI/CD platform featuring Git integration, fast pipelines, and hosted development environments.
Hexclave
NOASSERTIONSelf-hostable platform combining user auth, payments, email, and analytics into modular building blocks that fit around your existing product.
Grist
Apache-2.0A versatile data management platform combining spreadsheet simplicity with relational database capabilities for efficient data organization and analysis.
Flowglad
NOASSERTIONConnects client data across tools, automates recurring accounting workflows, and maintains a self-updating knowledge base with human approval controls.
Firecrawl
AGPL-3.0API for AI agents to search, scrape, crawl, and interact with the live web, returning clean Markdown, structured JSON, or screenshots from any page.
Wraps
NOASSERTIONBuild email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.
Workadventure
Create customizable virtual workspaces for remote teams to interact naturally, host events, and collaborate through spontaneous conversations and scheduled meetings.
WebStudio
AGPL-3.0Powerful no-code platform for building responsive websites. Combines visual editing with full HTML/CSS customization.
Wealthfolio
AGPL-3.0Wealthfolio is a simple, secure desktop app for tracking investments and managing your wealth without compromising data privacy.
Vikunja
AGPL-3.0A powerful, open-source task management platform for teams and individuals, offering customizable workflows and seamless integration.
VerifyWise
NOASSERTIONOpen-source AI governance platform helping teams meet regulatory standards like EU AI Act and ISO 42001. Monitor model performance, manage risks, and maintain compliance with enterprise-grade security.
Plunk
AGPL-3.0Plunk unifies marketing, transactional, and broadcast emails into a single, complete solution for businesses of all sizes.
Pluton
Apache-2.0Free, open-source backup solution with end-to-end encryption. Self-hosted control, supports 70+ cloud providers, automated incremental backups, and zero vendor lock-in.
Vendure
NOASSERTIONA headless, API-first e-commerce framework built on Node.js with TypeScript, offering customization and scalability for online stores.
Autumn
Apache-2.0Simplify Stripe integration for AI startups with 3 functions, 0 webhooks. Build pricing plans in 30 minutes with usage tracking, credits, and feature controls.
Uptime Kuma
MITMonitors websites, APIs, and services with real-time alerts, a status page, and support for dozens of notification channels. Self-hosted and Docker-friendly.
Uptrace
AGPL-3.0Uptrace is an OpenTelemetry-based platform that integrates traces, metrics, and logs to help monitor and optimize complex distributed systems.
Bruno
MITA modern, user-friendly API client that simplifies API testing and development with a clean interface and powerful features.
Tuta
GPL-3.0Tuta offers encrypted email, calendar and contacts with quantum-resistant security, protecting your privacy without ads or tracking.
Abby
AGPL-3.0Open-source feature flags, remote config, and A/B testing for developers
Trigger
Apache-2.0Open source TypeScript platform for building and deploying AI agents and background workflows with retries, queues, observability, and elastic scaling.
Quiet
GPL-3.0Quiet is a peer-to-peer messaging app that syncs messages directly between devices over Tor, with no central server, no phone number required, and no metadata leaks.
Tiledesk
MITAI-enhanced live chat platform for seamless customer engagement, featuring chatbots, multichannel support, and advanced analytics.
ToolJet
AGPL-3.0Open-source low-code platform for creating custom internal tools, dashboards, and admin panels with a drag-and-drop interface
Temps
Apache-2.0Self-hosted platform for small dev teams combining deployments, error tracking, analytics, session replay, uptime monitoring, and managed databases in one dashboard.
Teable
NOASSERTIONOpen-source platform combining powerful database capabilities with a user-friendly spreadsheet interface for efficient data management and collaboration.
Hive
MITA fully open-source schema registry, analytics, and gateway for GraphQL federation and APIs
Superset
NOASSERTIONmacOS app that orchestrates multiple AI coding agents simultaneously, each in its own isolated Git worktree, so you can work on many tasks at once.
Swetrix
AGPL-3.0Privacy-first web analytics with real-time dashboards, session replays, error tracking, A/B testing, and GDPR compliance out of the box. No cookies, no consent banners.
Soketi
AGPL-3.0Open-source, Pusher-compatible WebSockets server that's simple, fast, and resilient for building real-time applications.
Shopware
MITA flexible and customizable ecommerce solution that enables businesses to build responsive online stores with advanced features and automation capabilities.
Sequin
MITSequin offers a feature-rich messaging system with a simple HTTP API, providing RabbitMQ-like functionality without adding complexity to your stack.
Rocket.Chat
NOASSERTIONOpen source communication platform combining messaging, voice, video, and AI for organizations that need full data control, air-gapped deployments, and zero-trust security.
Puter
AGPL-3.0Puter is a cloud-based desktop OS you run in the browser, with built-in apps, file storage, and support for hosting web apps and sites.
Quant-UX
GPL-3.0Quant-UX is an open-source tool for creating interactive prototypes, conducting user tests, and analyzing results to improve UX design.
Procaptcha
Apache-2.0A blockchain-based CAPTCHA solution offering improved security, user experience, and resistance to bot attacks for web applications.
Plausible
AGPL-3.0Simple, open-source web analytics tool that respects user privacy and provides valuable insights without compromising data protection.
PostHog
NOASSERTIONAll-in-one product analytics platform. Track user behavior, run experiments, and make data-driven decisions to grow your product.
Pipeshub
Apache-2.0Self-hostable enterprise AI platform that unifies business data across apps, powers a knowledge graph for cited answers, and lets teams build AI agents across their stack.
Plane
AGPL-3.0Open source project management platform combining issues, wikis, and AI agents in one workspace. Available on cloud, self-hosted, and air-gapped deployments.
Peekaping
MITOpen-source uptime monitoring solution with real-time alerts, status pages, and comprehensive checks for websites, APIs, databases, and services.
Penpot
MPL-2.0Design, prototype, and hand off to developers in one platform. Supports design systems, tokens, flexible layouts, and AI workflows with real CSS/HTML output.
Payload
MITA powerful, flexible, and developer-friendly content management system that prioritizes customization and scalability.
Paseo
NOASSERTIONSelf-hosted orchestrator for coding agents like Claude Code, Codex, and Cursor, controlled from phone, desktop, web, or CLI.
Pangolin
NOASSERTIONDeploy zero trust access to infrastructure, self-hosted apps, and SaaS tools in days. Identity-aware security with seamless user experience.
Ory
Apache-2.0Ory is a certified and battle-tested identity solution backed by a large open source community and trusted by Fortune 500 companies.
PairDrop
GPL-3.0Share files instantly between devices using peer-to-peer technology. No registration, installation, or configuration required. Works cross-platform.
Operational
AGPL-3.0Track critical events, receive instant notifications, and respond to product activities with customizable webhooks and action buttons
OpenReplay
NOASSERTIONOpen-source session replay and product analytics platform you can self-host for complete control over data security, privacy, and compliance.
OpenPanel
AGPL-3.0Open-source analytics platform covering web traffic, custom events, funnels, retention, session replay, and revenue tracking. GDPR-compliant with optional self-hosting.
OpenComputer
Apache-2.0Provides always-on virtual machines for AI agents with full OS access, persistent state, elastic CPU/memory resizing, and instant checkpoints.
OneUptime
Apache-2.0All-in-one solution for uptime monitoring, incident management, and status pages to keep your services running smoothly
Novu
NOASSERTIONOpen-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.
NocoDB
NOASSERTIONConvert any database into a no-code platform with spreadsheet interface. Connect PostgreSQL/MySQL or use hosted database. Scale to millions of rows effortlessly.
Mockoon
MITCreate, run, and share mock REST APIs without coding. Boost productivity with an intuitive interface and powerful features.
Mike
AGPL-3.0Self-hostable alternative to Harvey and Legora with document analysis, contract drafting, tabular review, and reusable workflows. Zero licensing costs, full data control.
Metabase
NOASSERTIONOpen-source business intelligence platform for data exploration, visualization, and sharing. Empowers teams to make data-driven decisions effortlessly.
Mermaid
MITCreate flowcharts, sequence diagrams, Gantt charts, and more using a simple Markdown-like syntax that renders anywhere.
Medusa
NOASSERTIONFlexible, customizable e-commerce platform with headless architecture, built-in features, and extensive plugin ecosystem for scalable online stores.
Mattermost
NOASSERTIONMattermost provides a flexible, open-source platform for secure team collaboration, designed for organizations with strict security and privacy requirements.
LosslessCut
GPL-2.0Desktop app for lossless video and audio editing. Cut, trim, merge, and remux files in seconds without re-encoding, using FFmpeg under the hood.
LogChimp
NOASSERTIONCollect, organize, and prioritize user feedback to build better products. Self-hosted solution for seamless feature request management.
Litlyx
Apache-2.0Track user behavior, custom events, and conversion funnels in real-time with a single line of code, all while maintaining GDPR compliance.
Lightdash
NOASSERTIONSelf-serve analytics platform that transforms dbt models into interactive dashboards, enabling data-driven decisions across organizations.
LibreChat
MITChat with multiple AI providers through a single self-hostable interface, with support for custom agents, file uploads, plugins, and multi-user access control.
LangWatch
Apache-2.0Tests AI agents through multi-turn simulations, LLM-based scoring, and production tracing so teams can ship reliable agents with confidence.
Kutt
MITKutt offers a free and open-source solution for shortening URLs, complete with custom domains and detailed analytics.
Langfuse
NOASSERTIONLangfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.
KeystoneJS
MITA powerful, customizable content management system and application framework built on Node.js, GraphQL, and React
Kener
MITFree, open-source status page and uptime monitor with Docker deployment. Track 11 service types, manage incidents, schedule maintenance, and notify subscribers instantly.
Jitsu
MITCollect, transform, and sync data across your entire infrastructure with a flexible, code-based approach to data integration.
Lemmy
AGPL-3.0Open-source forum and link aggregator that connects communities across the fediverse. Self-hosted, ad-free, with powerful moderation tools and federation.
PeerTube
AGPL-3.0Create your own video hosting platform with PeerTube - a free, open-source alternative to YouTube. Join 600,000+ videos across 1,000+ interconnected platforms without ads or tracking.
Mastodon
AGPL-3.0A free, open-source social media platform that puts users in charge of their data and connections
itsnotes
MITA self-hosted, open-source note-taking app that keeps the Google Keep sticky-note feel while adding folders, timelines, list views, and import support.
Infisical
NOASSERTIONEnd-to-end encrypted secret management platform for seamless integration and enhanced security in development workflows.
Immich
AGPL-3.0Back up, organize, search, and browse your personal photo and video library on your own server, with no third-party cloud access.
Insomnia
Apache-2.0Intuitive API client for REST, GraphQL, and gRPC. Debug, test, and collaborate on APIs with ease across platforms.
Hyperswitch
Apache-2.0A unified payment infrastructure that connects multiple payment processors through a single API integration, enabling global payment processing
HyperDX
MITOpen source observability platform unifying session replays, logs, traces, metrics and errors. Fast search, automatic clustering, $0.40/GB pricing.
Hoppscotch
MITLightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.
Hi.Events
NOASSERTIONHi.Events is a comprehensive platform for event management and online ticket sales, offering features like QR code check-in, custom ticket types, and embeddable widgets.
Highlight
NOASSERTIONComprehensive monitoring solution offering error tracking, session replay, and performance insights for seamless debugging and optimization.
Hook0
NOASSERTIONSelf-hosted webhook solution for effortless event-driven communication between applications, enhancing system interoperability and automation.
Hanko
NOASSERTIONOpen source authentication platform supporting passkeys, 2FA, SSO, and social login. Self-host or use Hanko Cloud, with full control over your data and no lock-in.
GrowthBook
NOASSERTIONPowerful, developer-friendly experimentation tool for data-driven product decisions. Seamless integration, real-time insights, and flexible deployment.
GoRules
MITModel business logic in decision tables, visual flows, and natural-language rules. Change rules without deploys, test every path, and run the same engine anywhere.
Gladys Assistant
Apache-2.0Privacy-first home automation platform that runs locally on your hardware, supports Zigbee, Matter, and MQTT, and lets you automate your home without coding.
Ghostfolio
AGPL-3.0Open-source wealth management software for tracking stocks, ETFs, and cryptocurrencies across multiple portfolios
Workbench
MITDesktop app and embeddable dashboard for BullMQ that shows live queue metrics, job runs, FlowProducer graphs, and scheduler status without touching Redis directly.
Unleash
AGPL-3.0A powerful feature management platform enabling gradual rollouts, A/B testing, and seamless integration for continuous delivery.
Ever Gauzy
AGPL-3.0All-in-one solution for ERP, CRM, HRM, ATS, and project management to streamline your business operations
Flowise AI
NOASSERTIONOpen source platform for building AI agents, chatbots, and multi-agent systems using a drag-and-drop interface, with support for 100+ LLMs and RAG.
Countly
NOASSERTIONAll-in-one analytics platform for mobile, web, and desktop apps. Track user behavior, monitor performance, and optimize your product.
Flagsmith
BSD-3-ClausePowerful feature management platform for seamless software releases, A/B testing, and personalized user experiences.
Fonoster
MITBuild and deploy powerful voice and messaging applications with ease using Fonoster's flexible, scalable, and developer-friendly platform.
FastGPT
NOASSERTIONFastGPT is a free, open-source platform for creating AI-powered knowledge bases with data processing, model invocation, and visual workflows.
Ever Teams
AGPL-3.0Ever Teams offers an all-in-one solution for work management, time tracking, and team collaboration with integrations for popular tools.
Erxes
NOASSERTIONAll-in-one solution for marketing, sales, and customer service. Boost engagement, streamline workflows, and drive growth.
Element
AGPL-3.0Open-source platform for encrypted communication, file sharing, and collaboration based on the Matrix protocol.
Dokku
MITA Docker-powered platform that lets you deploy Heroku-compatible applications via Git, with buildpack support and container isolation.
Docs
MITTransform document collaboration with real-time editing, version control, and secure sharing features that enhance team productivity and communication.
Directus
NOASSERTIONA versatile headless CMS and API engine that simplifies data management, content creation, and application development.
Digger
MITOpen-source CI/CD orchestrator for Terraform with pull request automation, drift detection, and enterprise-grade security. Self-hostable with private runners.
CryptPad
AGPL-3.0Open-source collaboration suite offering encrypted document editing, file sharing, and team workspaces with complete privacy protection.
Cube
NOASSERTIONCube is a universal semantic layer that connects data sources to analytics tools, providing consistent definitions and fast queries.
CourseLit
AGPL-3.0An open-source platform for building and selling online courses, featuring customizable themes, integrated payments, and user management.
Cosmos Server
NOASSERTIONComplete self-hosting solution with automated maintenance, Smart-Shield protection, anti-DDoS, SSO authentication, and VPN access for secure private cloud management.
Continue
Apache-2.0Runs source-controlled AI checks on every pull request, enforcing your engineering standards as native GitHub status checks with suggested fixes.
Coder
AGPL-3.0Self-hosted development platform that enables secure, scalable remote coding with automated provisioning, reduced cloud costs, and enterprise-grade security.
ClearFlask
Apache-2.0ClearFlask is an open-source platform for collecting, analyzing, and acting on customer feedback to drive product development.
Checkmate
AGPL-3.0Monitor servers, websites, Docker containers, and infrastructure with real-time insights, instant alerts, and powerful analytics. Self-hosted solution.
Chartbrew
NOASSERTIONA powerful, open-source platform for building interactive dashboards and charts from multiple data sources without coding.
Builder
MITDrag-and-drop interface for creating and optimizing digital experiences, with headless CMS and powerful integrations.
Budibase
NOASSERTIONLow-code platform for creating custom business applications quickly. Design, automate, and deploy with ease.
Buzz
Apache-2.0Workspace that combines team chat, project planning, and git management with AI agents that collaborate alongside your team on shared context.
Bluesky
MITA decentralized social network focused on fostering meaningful interactions and giving users control over their data and experience.
Blinko
GPL-3.0The next generation of open-source AI-powered card notes designed to help you quickly capture and organize inspiration so that ideas never run out.
Ballerine
NOASSERTIONReduce fraud, accelerate underwriting, and maintain compliance with AI-driven merchant risk intelligence for PSPs, banks, and fintechs.
Automatisch
NOASSERTIONSelf-hosted automation tool that connects your apps and services, enabling powerful integrations and efficient data flow across your ecosystem.
Argos
MITAutomate visual testing, catch UI bugs early, and collaborate effortlessly with your team to maintain pixel-perfect interfaces.
AnythingLLM
MITA desktop and self-hostable AI app for chatting with documents, running local LLMs, and using AI agents without writing code or creating an account.
AppSmith
Apache-2.0Low-code platform for creating powerful internal tools and dashboards with drag-and-drop ease, robust integrations, and customizable workflows.
Akaunting
NOASSERTIONSelf-hostable accounting software covering invoicing, expense tracking, cash flow, and client portals. Free to use, available in 50+ languages.
AITable
AGPL-3.0Visual database and workflow automation tool with AI-powered features and 6,000+ app integrations
Actual
MITPrivacy-focused envelope budgeting app with local-first sync and end-to-end encryption
NHost
MITFully managed backend infrastructure with built-in authentication, database, storage, and serverless functions for rapid application development.
