Find the best open-source alternatives to popular software.

An open-source design platform featuring a customizable canvas editor, AI-powered tools, and React components for building modern web applications.

Open-source observability platform for GenAI and LLM applications. Real-time monitoring, distributed tracing, prompt management, and AI model evaluation built on OpenTelemetry.

Privacy-focused proof-of-work CAPTCHA system that silently protects websites without tracking users or requiring image solving. Drop-in replacement for reCAPTCHA.

A peer-to-peer encrypted filesystem for secure file storage, sharing, and collaboration with end-to-end encryption and user-controlled data.

Self-hosted file sharing platform with encryption, S3 storage, REST API, and lightning-fast uploads. Deploy in minutes with full data control.

Reduce fraud and speed underwriting with AI-driven risk intelligence for PSPs, banks, and fintechs.

Elementary provides dbt-native data observability to detect issues, understand root causes, and resolve problems quickly in data pipelines.

ALTCHA offers cutting-edge spam and abuse protection for websites and apps, with privacy-friendly CAPTCHA alternatives designed for GDPR compliance.

Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.

A mobile app for interacting with private, local large language models that work offline and are optimized for Apple silicon.

WR.DO offers free domain name distribution and short URL generation, built on Cloudflare's infrastructure for reliability and speed.

Organize tasks and chores with intelligent scheduling, fair assignment, and collaboration features. Perfect for families and teams with smart notifications.

Monitor networks, servers, and cloud environments with flexible open-source solution. Custom checks, fast alerts, and complete infrastructure control.

Self-hosted SEO platform for keyword research, backlink analysis, competitor monitoring, and rank tracking. Fork the code, customize features, and own your data completely.

Open-source container orchestrator designed for AI teams. Manage GPU workloads, dev environments, and model deployments across any cloud or on-prem cluster.

Open-source email marketing platform offering unlimited subscribers, campaigns, and workspaces. Self-hosted solution with powerful API and beautiful interface.

Sequin offers a feature-rich messaging system with a simple HTTP API, providing RabbitMQ-like functionality without adding complexity to your stack.

Self-hosted newsletter platform with powerful features, data protection, and full control over your mailing lists and campaigns.

Transform bare metal servers into a complete cloud platform with REST API for Kubernetes clusters, databases, VMs, and load balancers. Build your own cloud.

A comprehensive platform for managing transactional and marketing emails through AWS SES, featuring customer data management, SMS capabilities, and workflow automation.

Open-source platform for building interactive product tours, tooltips, and in-app guides to improve user engagement and feature adoption without complex coding

Frappe Builder is an open-source, low-code website builder that enables users to create beautiful, responsive websites with an intuitive visual interface.

A developer-focused localization platform that automates translation workflows within your existing development pipeline and CI/CD processes.

Open source billing platform that turns events into revenue with real-time metering, usage limits, and flexible pricing. Integrates with Stripe, CRMs, and payment providers.

Nitric automates cloud infrastructure provisioning from your application code for AWS, GCP and Azure

Free open source IT monitoring solution for servers, networks, and applications. Trusted by 1M+ users worldwide with powerful alerting and enterprise-grade features.

A powerful platform for technical writing, offering real-time collaboration, version control, and seamless integrations.

Free open-source email platform for newsletters and transactional emails. Self-hosted alternative to Mailchimp with visual MJML editor, A/B testing, and analytics.

Kanri is a free, open-source personal Kanban app that works offline, offering a modern and simple experience while respecting your privacy.

Fleetbase is a comprehensive open source logistics suite offering API, TMS, driver and customer apps for streamlined operations and development.