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Best stacks alternatives

Explore highly rated tools in the same categories as stacks, compared using public project data.

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12 tools

100/100

sim

Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders.

Open source AI
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100/100

kilocode

Kilo is the all-in-one agentic engineering platform. Build, ship, and iterate faster with the most popular open source coding agent.

Open source Developer ToolsAI
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100/100

LibreChat

Enhanced ChatGPT Clone: Features Agents, MCP, Skills, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, G

Open source AI
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100/100

SurfSense

Open-source NotebookLM alternative. Research the open web with live data(Reddit, YT, IG, TikTok, Indeed, Google Search, Maps etc) through one platform, API or M

Open source AI
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100/100

private-gpt

Complete API layer for private AI applications on local models: RAG, skills, tools, MCP, text-to-sql, and more. Works with any OpenAI-compatible inference serve

Open source AI
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100/100

spec-kit

💫 Toolkit to help you get started with Spec-Driven Development

Open source AI
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L
100/100

LightRAG

[EMNLP2025] "LightRAG: Simple and Fast Retrieval-Augmented Generation"

Open source AI
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O
100/100

omlx

LLM inference server with continuous batching & SSD caching for Apple Silicon — managed from the macOS menu bar

Open source AI
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100/100

haystack

Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with exp

Open source AI
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100/100

E2B

Open-source, secure environment with real-world tools for enterprise-grade agents.

Open source AI
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100/100

puck

The visual editor for React.

Open source AIWebsite Tools
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