Open Source AI Development Platforms
A curated collection of the best open source platforms and frameworks for building AI-powered applications.
Structured control layer for customer-facing AI agents
Stars
18,263Last commit
1 month agoLicense
Apache-2.0
A conversational AI server that manages agent behavior through context-aware guidelines, keeping responses consistent, auditable, and aligned at scale.
Open Source Alternative to:
Desktop AI agent with persistent memory across platforms
Stars
234,817Last commit
14 hours agoLicense
MIT
Cross-platform desktop agent from Nous Research that connects to Telegram, Discord, Slack, WhatsApp, and more, with persistent memory, scheduling, and isolated sandboxing.
Open Source Alternative to:
Build and deploy AI agents and RAG pipelines visually
Stars
153,279Last commit
17 hours agoLicense
Unknown
Visual platform for building agentic workflows, RAG pipelines, and LLM-powered apps. Supports hundreds of models, MCP integration, and self-hosted deployment.
Open Source Alternative to:
Visual builder for AI agents and RAG pipelines
Stars
153,586Last commit
24 hours agoLicense
MIT
Build, deploy, and iterate on AI agents, RAG applications, and MCP servers using a drag-and-drop visual interface backed by Python.
Open Source Alternative to:
Org chart, budgets, and governance for AI agent teams
Stars
79,230Last commit
11 hours agoLicense
MIT
Manages teams of AI agents across business functions with org charts, goal alignment, cost tracking, ticket tracing, and board-level governance controls.
Open Source Alternative to:
Manage, build, and run AI agent teams around the clock
Stars
81,949Last commit
11 hours agoLicense
Unknown
A collaborative platform to create, schedule, and operate AI agents that handle long-running tasks, team workflows, and automated jobs without constant oversight.
Open Source Alternative to:
Persistent memory layer for AI agents and apps
Stars
63,879Last commit
1 day agoLicense
Apache-2.0
Adds persistent, searchable memory to AI agents and apps, so they remember user preferences and past interactions across sessions without pipeline changes.
Open Source Alternative to:
LLM gateway for auth, load balancing, and spend tracking
Stars
57,075Last commit
18 hours agoLicense
Unknown
Acts as a unified proxy across 100+ LLMs, normalizing them to the OpenAI format while handling virtual keys, budgets, rate limits, fallbacks, and cost tracking.
Open Source Alternative to:
Project management for teams mixing humans and AI agents
Stars
47,368Last commit
11 hours agoLicense
Unknown
Open-source platform that manages coding agents as team members, with task queues, skill libraries, runtime monitoring, and a unified activity feed.
Open Source Alternative to:
One interface for all your AI models and conversations
Stars
42,361Last commit
11 hours agoLicense
MIT
Chat with multiple AI providers through a single self-hostable interface, with support for custom agents, file uploads, plugins, and multi-user access control.
Open Source Alternative to:
Model-agnostic platform for building intelligent AI agents
Stars
41,854Last commit
12 hours agoLicense
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.
Open Source Alternative to:
Build AI copilots for your product in hours, not months
Stars
36,979Last commit
21 hours agoLicense
MIT
Integrate production-ready AI copilots into any product quickly and easily with CopilotKit's open-source platform.
Open Source Alternative to:
Visual builder for AI agents and LLM workflows
Stars
55,385Last commit
11 days agoLicense
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.
Open Source Alternative to:
Build and deploy AI agents with advanced memory
Stars
24,367Last commit
21 hours agoLicense
Apache-2.0
Letta is an open-source platform for creating AI agents with built-in memory, reasoning, and support for thousands of tools.
Open Source Alternative to:
AI agent that autonomously handles real-world tasks
Stars
20,132Last commit
11 hours agoLicense
Apache-2.0
Open source AI assistant that executes complex tasks from market research to travel planning through natural conversation, with full transparency and community-driven development.
Open Source Alternative to:
Full-stack platform for voice, video, and physical AI agents
Stars
20,489Last commit
1 day agoLicense
Apache-2.0
Build, test, deploy, and scale voice and video AI agents with an open source framework, inference gateway, telephony integrations, and full observability.
Open Source Alternative to:
Secure cloud environments for enterprise AI agents
Stars
13,522Last commit
2 days agoLicense
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.
Open Source Alternative to:
Build powerful AI agents with cutting-edge LLM technology
Stars
14,876Last commit
2 days agoLicense
MIT
A comprehensive platform for creating AI agents with intuitive tools, extensive integrations, and enterprise-grade features powered by the latest language models.
Open Source Alternative to:
Complete production stack for AI teams
Stars
12,806Last commit
3 months agoLicense
MIT
Comprehensive AI platform with gateway, observability, guardrails, and prompt management. Access 1,600+ LLMs via unified API with enterprise-grade security.
Open Source Alternative to:
Build product integrations with 500+ APIs in hours
Stars
11,569Last commit
2 days agoLicense
Elastic-2.0
Complete integrations platform with 500+ pre-built APIs, code-first approach, unified data models, and enterprise-grade security. Free tier available.
Open Source Alternative to:
Ultra-fast AI gateway with enterprise-grade reliability
Stars
7,521Last commit
13 hours agoLicense
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.
Open Source Alternative to:
Build stateful backends with in-memory actors
Stars
6,078Last commit
2 days agoLicense
Apache-2.0
Open-source infrastructure for long-lived, in-memory processes called Actors. Combines state and compute with sub-millisecond latency, realtime capabilities, and horizontal scaling.
Open Source Alternative to:
Build reliable AI agents with unified tool integration
Stars
4,883Last commit
3 months agoLicense
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
Open Source Alternative to:
Route GenAI traffic with confidence using open source
Stars
1,952Last commit
2 days agoLicense
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.
Open Source Alternative to:
Serverless GPU compute with sub-second cold starts
Stars
1,752Last commit
4 days agoLicense
AGPL-3.0
Run GPU inference, task queues, and sandboxes on serverless infrastructure with sub-second cold starts, autoscaling, and support for your own AWS, GCP, or bare metal.
Open Source Alternative to:
Unified API for all LLM providers with analytics
Stars
1,566Last commit
16 hours agoLicense
MIT
Route, manage, and analyze LLM requests across multiple providers with one API. Compatible with OpenAI format, includes usage analytics and performance monitoring.
Open Source Alternative to:
Build AI agents and automate complex workflows seamlessly
Stars
992Last commit
19 hours agoLicense
Apache-2.0
Create intelligent automation workflows combining AI agents with your favorite apps and services. Connect, automate, and scale your operations without complex coding.
Open Source Alternative to:
TypeScript framework for building autonomous AI agents
Stars
617Last commit
17 days agoLicense
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.
Build and deploy AI agents through visual workflows
Stars
554Last commit
21 days agoLicense
Apache-2.0
Create powerful AI agents using an intuitive node-based interface that connects multiple LLMs and data sources for automated documentation and development workflows.
Persistent cloud VMs that hibernate and wake in seconds
Stars
473Last commit
1 day agoLicense
Apache-2.0
Provides always-on virtual machines for AI agents with full OS access, persistent state, elastic CPU/memory resizing, and instant checkpoints.
Open Source Alternative to:
Build complex automations without code, deploy anywhere with full control
Stars
53Last commit
1 month agoLicense
MIT
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.
Open Source Alternative to:
Openlane – Open-source, developer-first platform for automated compliance, risk management, and built-in Trust Center.
Openlane
CodeRabbit
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