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Open Source Alternatives to Popular Software

Over 1 million users replaced their proprietary tools with open source software.Discover the best alternatives and join the movement.

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Novu

Unknown

Open-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.

Customer.ioNotificationAPIKnock
39K 4.3K Last commit 1 day ago
CodexClassroom

Postiz

AGPL-3.0

Open-source social media scheduling tool that plans, generates, and publishes posts across 30+ networks with AI assistance, analytics, and team collaboration.

HootSuiteBufferTypefully
32K 5.9K Last commit 2 days ago
CodexClassroom

c15t

Apache-2.0

Open source consent management framework for modern web apps. Framework-agnostic, fully customizable, and performance-first with no vendor lock-in.

TermlyCookieYesCookie Control
1.8K 159 Last commit 4 days ago
CodexClassroom

Dub Partners

Unknown

Run affiliate, influencer, and referral programs with flexible reward structures, real-time attribution, and automated global payouts.

AffonsoToltPartnerStack
24K 3.0K Last commit 2 days ago
CodexClassroom

Cap

AGPL-3.0

Record your screen or webcam, edit with backgrounds and effects, then share via link. Built on Rust and Tauri for native performance on macOS and Windows.

Screen StudioLoomCleanShot
20K 1.6K Last commit 1 day ago
CodexClassroom

Parlant

Apache-2.0

A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.

VoiceflowChatbaseUchat
18K 1.5K Last commit 2 days ago
CodexClassroom

Open Mercato

MIT

A modular CRM/ERP framework built on Next.js and TypeScript that encodes hundreds of architectural decisions so dev teams can ship production features in days, not months.

SAPRetool
1.4K 295 Last commit 24 hours ago
CodexClassroom

ACI.dev

Apache-2.0

Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server

PipedreamEden AIRube
4.8K 464 Last commit 17 days ago
CodexClassroom

Agenta

MIT

Open-source LLMOps platform providing prompt management, evaluation, and observability tools for building robust AI applications with team collaboration.

LangSmithHumanloop
4.2K 547 Last commit 1 day ago
CodexClassroom

AgentOS

Apache-2.0

Open-source TypeScript runtime for autonomous AI agents with cognitive memory, multi-agent orchestration, runtime tool generation, and support for 21 LLM providers.

576 79 Last commit 2 days ago
CodexClassroom

Agno

Apache-2.0

Open-source platform that enables developers to create, deploy and monitor AI agents with built-in memory, knowledge integration, and external tool connectivity.

KiroLangChainHumanloop
41K 5.5K Last commit 20 hours ago
CodexClassroom

Arize Phoenix

Unknown

Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.

LangSmithLangChainHumanloop
10K 921 Last commit 14 hours ago
CodexClassroom

Beam

AGPL-3.0

Run AI workloads with sub-second cold starts, elastic GPU scaling, and secure sandboxed environments. Scale to zero when idle, burst to thousands instantly.

Together SandboxVertex AIModal
1.7K 143 Last commit 11 hours ago
CodexClassroom

Bifrost

Apache-2.0

Open-source AI gateway delivering 50x faster performance than alternatives. Access 1000+ models from 8+ providers with built-in governance, fallback, and observability.

Eden AIOpenRouterVercel AI Gateway
5.7K 752 Last commit 12 hours ago
CodexClassroom

Botpress

MIT

A comprehensive platform for creating AI agents with intuitive tools, extensive integrations, and enterprise-grade features powered by the latest language models.

ManychatVoiceflowUchat
15K 2.3K Last commit 2 days ago
CodexClassroom

ByteChef

Unknown

Create intelligent automation workflows combining AI agents with your favorite apps and services. Connect, automate, and scale your operations without complex coding.

n8nMakeZapier
773 140 Last commit 2 days ago
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CodeZero

Unknown

Open-source no-code automation platform for logistics, chatbots, and AI agents. Deploy on cloud, self-host, or hybrid with complete data sovereignty and modular workflow design.

Zoho FlowAzure Logic Apps
35 1 Last commit 2 months ago
CodexClassroom

CopilotKit

MIT

Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.

35K 4.4K Last commit 1 day ago
CodexClassroom

Daytona

AGPL-3.0

Elastic sandbox infrastructure for running AI-generated code with sub-90ms environment creation, stateful operations, and isolated execution across Python, TypeScript, Go, and more.

Together SandboxModalSprites
72K 5.6K Last commit 2 days ago
CodexClassroom

Dify

Unknown

Visual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment.

GlideRetoolHumanloop
145K 23K Last commit 12 hours ago
CodexClassroom

E2B

Apache-2.0

Provide AI agents with secure, isolated sandboxes featuring real-world tools, code execution, and enterprise-grade security. Trusted by 88% of Fortune 100 companies.

Together SandboxModalSprites
13K 930 Last commit 2 days ago
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Envoy AI Gateway

Apache-2.0

Open source gateway built on Envoy for routing application traffic to GenAI services. Supports 16+ LLM providers including OpenAI, Anthropic, AWS Bedrock.

Eden AIVercel AI GatewayCloudflare AI Gateway
1.7K 273 Last commit 23 hours ago
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FastGPT

Unknown

FastGPT is a free, open-source platform for creating AI-powered knowledge bases with data processing, model invocation, and visual workflows.

28K 7.1K Last commit 1 day ago
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Flowise AI

Apache-2.0

Open source platform for building AI agents, chatbots, and multi-agent systems using a drag-and-drop interface, with support for 100+ LLMs and RAG.

n8nMakePower Apps
54K 25K Last commit 4 days ago
CodexClassroom