📖 The AI Tool Bible

AI tools tagged Oss License Apache

48 tools matching this tag.tech

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A2A Protocol

Agents

Open standard for letting AI agents from different frameworks talk to each other.

Free· Free and open source (Apache 2.0)multi-agent-systemsagent-interop

AI Horde (Stable Horde)

Image Generation · Stable Diffusion (SD 1.5, SDXL, community checkpoints) + open LLMs

Crowdsourced, volunteer-run cluster for free Stable Diffusion image and LLM text generation.

Free· Free; optional Kudos earned by donating GPU time or purchased via Patreontext-to-imageimg2img

AI Prompt Genius

Writing

Open-source Chrome extension that turns your browser into a searchable, taggable prompt library for any AI chatbot.

Free· Free and open-sourceprompt-managementprompt-library

AI Prompt Genius

Writing

Open-source Chrome extension for building a searchable, tagged library of reusable AI prompts.

Free· Free and open-sourceprompt-libraryprompt-templates

AI SDK

Coding · Multi-model

Vercel's open-source TypeScript framework for building AI apps across 16+ providers with unified streaming, tools, and UI hooks.

Free· Open source (Apache 2.0); pay only for the underlying model APIschat-uiagent-building

AI-Flow

Agents · Multi-model (OpenAI, Anthropic, Google, Replicate, xAI)

Visual node-based builder for chaining OpenAI, Anthropic, Replicate and other model APIs into content pipelines.

Freemium· Free tier: 25 welcome credits + 20 BYOK runs/day; paid plans for extended storageworkflow-automationcontent-pipelines

Agent Lightning

Agents · Multi-model

Microsoft's open-source trainer that fine-tunes AI agents with RL and prompt optimization, framework-agnostic.

Free· Free, MIT-licensed open sourceagent-trainingreinforcement-learning

Agent Skills

Agents · Model-agnostic

Open format for packaging procedural knowledge and workflows that AI coding agents load on demand.

Free· Free open standardagent-extensionscoding-agents

AgentGPT

Agents · GPT-3.5 (BYO key for others)

Browser-based autonomous AI agent builder that chains GPT calls toward a goal you define.

Freemium· Free tier with limited monthly runs; paid plans for higher usageautonomous-agentstask-automation

AgentMemory

Agents · Multi-model (Claude, Gemini, MiniMax, OpenRouter)

Open-source persistent memory runtime for AI coding agents, with hybrid retrieval and zero external dependencies.

Free· Free, open-source (Apache 2.0); bring your own LLM API keyagent-memorycoding-agents

AgentOps

Agents · Multi-model

Observability and debugging platform purpose-built for AI agents, with time-travel replay and cost tracking across 400+ LLMs.

Freemium· Free up to 5,000 events; Pro from $40/mo; Enterprise customagent-observabilityllm-tracing

Agenta

Evaluation · Multi-model

Open-source LLMOps platform for prompt engineering, evaluation, and observability in one workspace.

Freemium· Open-source self-host free; managed cloud has free tier plus paid plansprompt-engineeringllm-evaluation

AgenticSeek

Agents · Bring-your-own local LLM (Ollama / llama.cpp compatible)

Open-source local-first AI agent that browses the web, writes code, and runs tasks without sending anything to the cloud.

Free· Free and open source; optional SerpApi key for enhanced searchlocal-ai-agentautonomous-web-browsing

Agno (formerly Phidata)

Agents · Multi-model

Open-source Python framework for building multi-agent systems, paired with a production runtime that ships in your own cloud.

Freemium· Framework free/OSS; AgentOS paid (see pricing page)

AlpacaEval

Evaluation · GPT-4 Preview (Nov 2024) as annotator

Automatic LLM evaluator and leaderboard that benchmarks instruction-following with length-controlled win rates.

Free· Free and open-source; pay only for the underlying OpenAI annotator API callsllm-benchmarkinginstruction-following eval

AnythingLLM

RAG · Multi-model

Open-source desktop and self-hosted app that turns your documents into a private chat-and-agent workspace.

Freemium· Desktop free (MIT); self-host free; cloud paid plansdocument-chatprivate-rag

Apache Mahout

Coding

Open-source ML framework pivoting toward scalable quantum computing primitives.

Free· Free, Apache-2.0 licensedquantum-circuitshybrid-ml

Apache SINGA

Fine-tuning

Apache-licensed distributed deep learning library focused on scalable training across GPUs and nodes.

Free· Free, Apache 2.0 licenseddistributed trainingdeep learning research

Archon

Agents · Multi-model (Claude Code, Codex, others)

Open-source orchestration layer for running multiple AI coding agents in parallel git worktrees.

Free· Free and open source; bring your own model API keysparallel-coding-agentsworkflow-orchestration

Arize AI

Evaluation · Multi-model

Enterprise observability and evaluation platform for LLM agents and generative AI applications.

Freemium· Free tier and OSS Phoenix; paid/enterprise tiers via salesllm-observabilityagent-evaluation

Arthur

Evaluation · Multi-model

Open-source toolkit for testing, tracing, and monitoring production AI agents.

Freemium· Open-source (MIT) + free SaaS tier; paid/enterprise plans on requestagent-evaluationprompt-management

AstrBot

Agents · Multi-model (OpenAI, Anthropic, Gemini, DeepSeek, Ollama, Dify, Coze)

Open-source agentic AI assistant that bridges chat platforms like Telegram, Discord, and QQ with any LLM and a 1000+ plugin ecosystem.

Free· Free, open-source (AGPL-3.0); self-hosted, you pay your own LLM API costs.chatbotgroup-chat-assistant

AudioCraft

Audio · MusicGen, AudioGen, EnCodec

Meta's open-source research toolkit for generating music and sound effects from text via a single autoregressive language model.

Free· Free and open source; self-hostedtext-to-musicsound-effects

BGE (BAAI General Embedding)

RAG · BGE / bge-m3 / bge-reranker

Open-source embedding and reranker models from BAAI that anchor a huge share of production RAG stacks.

Free· Free, open-source (MIT-style license); self-hosted inference cost onlysemantic-searchrag-retrieval

Beam

Coding

Serverless GPU infrastructure for AI workloads with sub-second cold starts and bring-your-own-cloud support.

Freemium· $30 free credit refreshed monthly; usage-based beyond thatgpu-inferenceagent-sandboxes

BentoML

Agents · Multi-model

Open-source framework and managed platform for serving and scaling AI models in production.

Freemium· OSS free (Apache 2.0); managed Bento cloud has free tier + usage-based pricingmodel-servingllm-inference

Berkeley Function-Calling Leaderboard

Evaluation · Multi-model

Open benchmark from UC Berkeley that ranks LLMs on real-world tool-use and function-calling accuracy.

Free· Free and open source; you pay only for inference when reproducing runs.function-calling evaltool-use benchmarking

Bifrost

Agents · Multi-model (OpenAI, Anthropic, Bedrock, Vertex, 1000+ via providers)

Open-source AI gateway that unifies 1000+ models behind one OpenAI-compatible endpoint with failover, budgets, and MCP routing.

Freemium· Open-source core (Apache 2.0); Enterprise tier with 14-day free trial, pricing on requestllm-gatewaymulti-provider-routing

Bisheng

Agents · Multi-model

Open-source enterprise AgentOps platform for building, orchestrating, and governing LLM agents at scale.

Freemium· Open-source community edition free; commercial enterprise edition via DataElement salesagent-orchestrationrag

Browser Use

Agents · Multi-model (BYO LLM; Claude in hosted Box)

Open-source browser automation harness and cloud platform for LLM agents that drive real websites.

Freemium· Free open-source library; cloud usage-based with free tier and enterprise plansweb-automationscraping

Browser Use Web UI

Agents · Multi-model

Gradio web UI for running browser-use AI agents in a real or persistent Chrome session.

Free· Free, open-source; bring your own LLM API keysbrowser-automationweb-agents

CAI

Agents · Multi-model (incl. alias1, GPT, Claude, DeepSeek)

Open-source agent framework for offensive security, bug bounty automation, and AI-driven penetration testing.

Freemium· Open source free; CAI PRO ~EUR 350/mopenetration-testingbug-bounty

CAMEL-AI

Agents · Multi-model

Open-source Python framework for building multi-agent systems and synthetic data pipelines.

Free· Free, open-source; pay for the underlying LLM API callsmulti-agent-systemssynthetic-data-generation

Chainlit

Agents · Multi-model

Open-source Python framework for building production-grade conversational AI interfaces in minutes.

Free· Open-source (Apache 2.0); optional paid Literal AI observability tierchatbot-uiagent-frontend

Chassis

Agents

Open-source tool that auto-packages ML models into production-ready Docker containers with a prediction API.

Free· Free, open source (Apache-style community project)model-packagingedge-deployment

ChatBar

Writing · Multi-model (ChatGPT, Claude, Gemini, Copilot, Perplexity, Pi, Poe)

Menu-bar launcher that puts ChatGPT, Claude, Gemini, Copilot, Perplexity, Pi and Poe one keystroke away.

Free· Free and open-source; paid macOS App Store build for auto-updatesmulti-model chatmenu-bar access

ChatGPT Shortcut

Writing · Multi-model

Curated, one-click prompt library covering ChatGPT, Claude, Gemini, and DeepSeek across writing, coding, and academic tasks.

Free· Free; open-source on GitHubprompt-libraryprompt-engineering

ChatLab

Agents · Bring-your-own (local models recommended)

Local-first analytics and AI agent for your personal chat history, with bring-your-own model support.

Free· Free / open-source; bring-your-own AI modelchat-analyticspersonal-knowledge-mining

Chatbot UI

Writing · Multi-model (OpenAI, Anthropic, Google, Mistral, Meta, etc.)

Open-source unified chat interface for 80+ frontier AI models.

Freemium· Free tier on hosted app; self-host is free (bring your own API keys)multi-model chatprompt management

Cherry Studio

Agents · Multi-model

Open-source desktop AI client that wires 300+ LLMs into one chat, knowledge-base, and agent workspace.

Free· Free and open source; bring your own API keysmulti-model chatlocal knowledge base

ClearML

Agents · Model-agnostic

End-to-end MLOps and GenAI platform with open-source experiment tracking and enterprise GPU orchestration.

Freemium· Free open-source + hosted tier; enterprise pricing on requestexperiment-trackinggpu-orchestration

CocoIndex

RAG · Bring-your-own (embeddings + LLM)

Open-source incremental data framework that keeps RAG indexes and agent context continuously fresh.

Free· Open-source, self-hosted; bring your own infracode-indexingrag-pipelines

CogVideoX

Video · CogVideoX / CogVideoX1.5 (diffusion transformer)

Open-source text-to-video and image-to-video diffusion transformer from Zhipu AI, runnable on consumer GPUs.

Free· Open-source weights; commercial API via bigmodel.cntext-to-videoimage-to-video

Cognee

RAG · Multi-model (Claude, OpenAI, others)

Open-source graph-memory layer that gives AI agents persistent, queryable context across sessions.

Freemium· Hobby free (1M tokens/mo); Growth $5/workspace/mo + token usage; Enterprise customagent-memoryknowledge-graphs

CompassRank

Evaluation · Multi-model

Public leaderboard from the OpenCompass project ranking open and closed LLMs across 100+ benchmarks.

Free· Free leaderboard; OpenCompass toolkit is Apache 2.0 open sourcellm-benchmarkingmodel-selection

Coze Studio

Agents · Multi-model

Self-hostable visual AI agent development platform from ByteDance with workflows, RAG, and plugin tooling.

Free· Free, Apache 2.0; self-hostedai-agentsworkflow-automation

Cube

RAG · Multi-model

Semantic layer that grounds LLM agents in your real business metrics instead of letting them hallucinate SQL.

Freemium· Cube Core open source; Cube Cloud paid, contact salessemantic-layerembedded-analytics

Cursor Talk to Figma MCP

Agents · Multi-model (Cursor / Claude Code via MCP)

Open-source MCP bridge that lets Cursor and Claude Code read and edit Figma files directly from the editor.

Free· Free, open-source (MIT)figma-automationdesign-to-code