AlternativeOSS - Open Source Software Alternatives Directory

Ladybird

Ladybird is an independent, open-source web browser built from scratch with a focus on performance, standards compliance, and user privacy.

45,845 stars

Last commit Jul 28, 2025

bsd-2-clause

Morphic

Morphic is an open-source answer engine that combines AI-powered conversational responses with dynamically generated interactive UI components.

7,838 stars

Last commit Jul 28, 2025

apache-2.0

Letta

Letta is an AI operating system that enables developers to create production-ready stateful agents with persistent memory and infinite context through a single API call.

17,504 stars

Last commit Jul 27, 2025

apache-2.0

👋 Jan

Jan is an open-source ChatGPT alternative that runs entirely offline on your computer, providing private AI conversations without data leaving your device.

35,142 stars

Last commit Jul 28, 2025

apache-2.0

AnythingLLM

AnythingLLM is a full-stack application that allows you to turn any document, resource, or piece of content into context that any LLM can use as references during chatting.

47,084 stars

Last commit Jul 26, 2025

mit

Open WebUI

Open WebUI is a user-friendly, self-hosted web interface for running and interacting with large language models locally.

104,134 stars

Last commit Jul 24, 2025

Analog

An open-source calendar application that serves as a privacy-focused alternative to Google Calendar, designed to transform intentions into actionable plans.

1,062 stars

Last commit Jul 28, 2025

mit

ERPNext

ERPNext is a comprehensive open-source ERP system that provides integrated business management solutions for companies of all sizes.

27,275 stars

Last commit Jul 28, 2025

gpl-3.0

Bolt.new

Bolt.new is an AI-powered web development platform that enables users to build, edit, and deploy full-stack applications directly in the browser without local setup.

15,414 stars

Last commit Dec 17, 2024

mit

LobeChat

LobeChat is an AI-powered chat platform that enables users to create, customize, and interact with personal AI agents for enhanced productivity and creative workflows.

63,858 stars

Last commit Jul 28, 2025

Flowise

An open-source visual platform for building AI agents and agentic systems with drag-and-drop workflow orchestration.

41,988 stars

Last commit Jul 28, 2025

Litlyx

Litlyx is a privacy-focused, lightweight analytics platform that provides real-time website insights without compromising user privacy or site performance.

1,528 stars

Last commit May 27, 2025

apache-2.0

Coroot

Coroot is an open-source APM and observability platform that provides zero-configuration monitoring and troubleshooting for microservices and distributed applications.

6,652 stars

Last commit Jul 1, 2025

apache-2.0

Harper

Harper is a grammar checker designed to be privacy-first, running locally without sending your text to external servers.

7,407 stars

Last commit Jul 25, 2025

apache-2.0

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Ladybird

Morphic

Letta

👋 Jan

AnythingLLM

Open WebUI

Analog

ERPNext

Bolt.new

LobeChat

Flowise

Litlyx

Coroot

Harper