📖 The AI Tool Bible

AI tools tagged Open Source

48 tools matching this tag.tech

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Warp

Coding · Multi-model: OpenAI, Anthropic Claude, Amazon Bedrock, plus BYO via OpenRouter and LiteLLM
8.8

The agentic development environment, from the terminal up

Freemium· Free / Build $20 per mo ($18 annual) / Max $200 per mo ($180 annual) / Business $50 per user/mo ($45 annual, up to 25 seats) / Enterprise customAgentic debugging of failing builds and testsNatural-language shell command generation

Cline

Coding · Model-agnostic: Claude (Anthropic), GPT (OpenAI), Gemini (Google), DeepSeek, Grok, Mistral, Cerebras, plus local Ollama/LM Studio
8.7

Open-source agentic coding assistant that plans, edits, and runs code inside your IDE

Freemium· Open Source: free (BYOK or pay model inference at cost via ClinePass) / Enterprise: custom pricing (contact sales for SSO, SLA, RBAC, team management)Multi-file feature scaffoldingLarge-scale refactors

Elasticsearch Vector Search

RAG · BYO embeddings (OpenAI, Cohere, Hugging Face, Mistral, Bedrock, Vertex, Azure) plus Elastic's built-in ELSER sparse model and E5 dense model
8.7

Hybrid vector + keyword search in the enterprise-grade Elasticsearch engine

Freemium· Free self-managed open-source core; Elastic Cloud Serverless usage-based (VCU-priced); Elastic Cloud Hosted from ~$95/mo (Standard) with Gold/Platinum/Enterprise tiers; custom Enterprise pricing.RAG chatbot over enterprise docsHybrid semantic + keyword product search

ChatGLM (Zhipu Qingyan)

Agents · GLM-4, GLM-4V, GLM-4-Air/Flash, CogView, CogVideoX (ChatGLM family, Zhipu AI / Tsinghua KEG)
8.4

Zhipu AI's bilingual ChatGLM assistant with agents, code, image and video generation

Freemium· Free consumer tier (chatglm.cn); paid API tiers via Zhipu Open Platform (bigmodel.cn) priced per million tokens by model (GLM-4, GLM-4-Air, GLM-4-Flash, GLM-4V, CogVideoX); enterprise/private deployment on requestChinese-language document drafting and rewritingChinese-English translation and localisation

PyCaret

Coding · Multi-model (scikit-learn, XGBoost, LightGBM, CatBoost)
8.4

Low-code Python AutoML library that wraps scikit-learn, XGBoost, LightGBM and friends behind a few-line API.

Free· Free and open-source (MIT license)automlclassification

Quivr

RAG · Multi-model (OpenAI, Anthropic, Mistral, Gemma)
8.4

Open-source RAG framework for building custom AI assistants over your own documents in a few lines of Python.

Free· Open source (pip install quivr-core); pay only for LLM/vector-store usagedocument-qacustom-knowledge-base

ScrapeGraphAI

Agents · Multi-model (LLM, unspecified)
8.4

LLM-driven web scraping API that turns natural-language prompts into structured JSON.

Freemium· Free 500 credits; Starter $20/mo, Growth $100/mo, Pro $500/mo, Enterprise customweb-scrapingdata-extraction

Semantic Kernel

Agents · Multi-model
8.4

Microsoft's open-source SDK for wiring LLMs, plugins, and agents into enterprise .NET, Python, and Java apps.

Free· Free, MIT-licensed SDK; you pay for the underlying model APIsagent-orchestrationllm-plugins

Yi (01.AI)

Agents · Yi-Lightning (MoE), Yi-Large, Yi-1.5 (6B/9B/34B), Yi-VL, Yi-Coder — in-house 01.AI foundation models
8.4

Foundation models from 01.AI — open-weight Yi family plus frontier Yi-Lightning and Yi-Large

Freemium· Open-source Yi models free under permissive license; hosted API via platform.lingyiwanwu.com with pay-per-token pricing (Yi-Lightning positioned as a low-cost frontier tier; Yi-Large priced higher; exact per-token rates on the platform dashboard). Enterprise custom-training and consulting on quote.Self-hosted coding assistantBilingual English-Chinese chatbot

Zed

Coding · Claude (Sonnet/Opus), GPT-4o/5, Gemini, Ollama-hosted local models, and Zed's own Zeta2 open-weight edit-prediction model
8.4

A high-performance, multiplayer code editor built in Rust with native AI agent workflows.

Freemium· Personal: Free / Pro: $10 per user/mo (includes $5 token credits + usage-based billing) / Business: $30 per seat/moAI pair-programming with Claude or GPT agentsInline code refactoring via natural-language prompts

ClearML

Agents · Model-agnostic
8.3

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

Flyte

Agents · Multi-model
8.3

Open-source Python-native orchestration platform for AI, ML, and data workflows at production scale.

Freemium· OSS free; Union.ai commercial tier for enterpriseml-pipelinesagent-orchestration

H2O.ai

Agents · Multi-model
8.3

Enterprise AI platform combining AutoML, generative AI, and vertical agents for regulated industries.

Enterprise· Contact sales; live demo on requestenterprise-agentsautoml

Llama

Fine-tuning · Llama 4 (Maverick, Scout), Llama 3.3/3.2/3.1
8.3

Meta's open-weight LLM family covering 1B mobile models up to 405B frontier and natively multimodal 10M-context Llama 4 variants.

Freemium· Weights free under Llama Community License; partner API inference ~$0.19-$0.49 per 1M tokensself-hosted-llmfine-tuning

Llama 3

Writing · Llama 3 / 3.1 (8B, 70B, 405B)
8.3

Meta's open-weights LLM family that put serious frontier-adjacent models in everyone's hands.

Free· Weights free under Meta Llama Community License; inference cost via self-hosting or 3rd-party providerschatlong-context reasoning

Qwen

Writing · Qwen3 / Qwen-Image / Qwen-MT / Qwen3Guard
8.3

Alibaba's open-weight foundation model family covering chat, vision, image generation, translation, and safety classification.

Freemium· Open weights free; hosted API priced per-token via Alibaba Cloud DashScopechatreasoning

Skyvern

Agents · Multi-model (OpenAI, Anthropic, Gemini, Ollama)
8.3

AI browser agent that automates web workflows from natural-language instructions, with CAPTCHA and 2FA handling built in.

Freemium· Free tier with 5,000 monthly credits; paid and enterprise plans availablebrowser-automationdata-extraction

Vanna.ai

RAG · Multi-model (Anthropic, OpenAI, Gemini, Ollama)
8.3

Open-source text-to-SQL agent that learns your schema and writes queries against your real warehouse.

Freemium· Open-source free; paid cloud tier for hosted admin featurestext-to-sqlnatural-language-bi

n8n

Agents · Multi-model
8.3

Source-available workflow automation with first-class AI-agent and RAG building blocks.

Freemium· Free self-host; Cloud Starter ~$24/mo; Enterprise contact salesai-agentsworkflow-automation

vLLM

Fine-tuning · Multi-model (open-weight LLMs: Llama, Qwen, DeepSeek, Mistral, Gemma, Phi, etc.)
8.3

Open-source high-throughput inference engine for serving LLMs with PagedAttention and continuous batching.

Free· Free and open-source (Apache 2.0); self-hosted infrastructure costs applyllm-servingself-hosted-inference

AgentOps

Agents · Multi-model
8.2

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

Arize AI

Evaluation · Multi-model
8.2

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

AudioCraft

Audio · MusicGen, AudioGen, EnCodec
8.2

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

BentoML

Agents · Multi-model
8.2

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

Browser Use

Agents · Multi-model (BYO LLM; Claude in hosted Box)
8.2

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

Daytona

Agents
8.2

Secure, isolated sandboxes for running AI-generated code with sub-90ms cold starts.

Freemium· Pay-per-second from $0.000014/sec; $200 free creditagent-sandboxescode-interpreters

Feast

RAG
8.2

Open-source feature store that serves consistent features to ML training and online inference, with RAG vector search built in.

Free· Free, open source (Apache 2.0); self-hostedfeature-storerag-retrieval

Giskard

Evaluation · Multi-model
8.2

Continuous AI red teaming platform that stress-tests LLM agents for vulnerabilities before they hit production.

Freemium· Open-source free tier; Giskard Hub enterprise pricing on requestllm-red-teamingagent-security-testing

Great Expectations

Evaluation
8.2

Open-source data quality framework for validating the datasets that feed your ML and analytics pipelines.

Freemium· GX Core free (Apache 2.0); GX Cloud paid tiers, contact salesdata-validationpipeline-testing

Hermes Agent

Agents · Multi-model (300+ via Nous Portal)
8.2

Open-source multi-channel AI agent with persistent memory, scheduling, and subagent delegation from Nous Research.

Freemium· MIT-licensed self-host free; managed Portal tiers Free/Plus/Super/Ultra with creditspersonal-assistanttask-automation

HyperFrames

Video · Multi-model (Claude Code skill; BYO agent)
8.2

Open-source video composition framework that lets AI agents build videos by writing HTML, CSS, and JS.

Free· Free, open-source (Apache 2.0)agent-driven videoprogrammatic video

Jan

Writing · Multi-model (local open-weights + OpenAI/Claude/Gemini via API)
8.2

Open-source desktop ChatGPT alternative that runs local LLMs and routes to cloud providers from one app.

Free· Free and open source; bring-your-own keys for cloud modelslocal-llm-chatprivate-ai-assistant

LTX Studio

Video · LTX-2, LTXV-13B, Veo 3, Flux.2
8.2

Storyboard-first AI video platform from Lightricks with shot-level camera and character control.

Freemium· Free tier plus paid subscription planstext-to-videostoryboarding

LanceDB

RAG
8.2

Open-source multimodal lakehouse and vector database built for AI training and retrieval at petabyte scale.

Freemium· Open-source free; LanceDB Cloud and Enterprise via contact salesvector-searchrag

LibreChat

Writing · Multi-model (OpenAI, Anthropic, Google, AWS Bedrock, Azure, Ollama, and others)
8.2

Open-source, self-hostable ChatGPT-style frontend that brings every major LLM provider under one roof.

Free· Free and open source; self-hosted (you pay model providers for API usage)multi-model chatself-hosted chatgpt

LiveBench

Evaluation · Multi-model
8.2

Contamination-free LLM benchmark that refreshes its questions monthly to keep frontier models honest.

Free· Free and open source; self-hosted evaluation runnerllm-benchmarkingmodel-selection

Ludwig

Fine-tuning · Multi-model (PyTorch + HuggingFace Transformers)
8.2

Declarative, YAML-driven deep learning framework for fine-tuning LLMs and multi-modal models without writing training loops.

Free· Free, Apache 2.0 open sourcellm-fine-tuningmulti-modal-training

SGLang

Fine-tuning · Multi-model (DeepSeek, Qwen, Llama, Mistral, GLM, GPT-OSS)
8.2

Open-source high-throughput inference engine for LLMs and multimodal models with OpenAI-compatible serving.

Free· Free, open-source (Apache 2.0); self-hosted infra cost onlyllm-servingmultimodal-inference

Sim

Agents · Multi-model (Claude, OpenAI, Google)
8.2

Open-source visual workspace for building, deploying, and monitoring AI agents.

Freemium· Free (1,000 credits/mo); Pro $25/user/mo; Max $100/user/mo; Enterprise customagent-workflowsinternal-automation

Unsloth

Fine-tuning · Llama, Mistral, Gemma, Qwen, GLM (multi-model)
8.2

Open-source LLM fine-tuning toolkit with custom kernels that train 2-30x faster and use up to 90% less VRAM.

Freemium· Free open-source; Pro and Enterprise contact saleslora-finetuningqlora

Vellum

Agents · Multi-model (Claude-class LLMs)
8.2

Personal AI assistant with persistent memory across email, calendar, and chat channels.

Freemium· Free tier + API costs; paid plans availablepersonal assistantemail triage

Berkeley Function-Calling Leaderboard

Evaluation · Multi-model
8.1

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

Cube

RAG · Multi-model
8.1

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

Hugging Face AutoTrain

Fine-tuning · Multi-model (Hugging Face Hub)
8.1

No-code fine-tuning and training pipeline that spins up state-of-the-art models on the Hugging Face Hub.

Paid· Per-minute billing based on hardware tier; self-hosted OSS version is freellm-fine-tuningtext-classification

Langflow

Agents · Multi-model
8.1

Open-source visual builder for LangChain-style AI agents and RAG pipelines.

Freemium· Open-source free; hosted free tier + paid enterprise via DataStaxagent-prototypingrag-pipelines

LocalAI

Writing · Multi-model (llama.cpp, diffusers, whisper, etc.)
8.1

Self-hosted OpenAI-compatible API for running LLMs, image, and audio models on your own hardware.

Free· Free and open source (MIT)local-llm-inferenceopenai-api-replacement

MLflow

Evaluation · Multi-model
8.1

Open-source platform for tracking, evaluating, and deploying ML models and LLM applications.

Free· Free and open source (Apache 2.0); managed offering via Databricksllm-evaluationexperiment-tracking

Mastra

Agents · Multi-model (90+ providers)
8.1

Open-source TypeScript framework for building, deploying, and observing AI agents and workflows.

Freemium· Free open-source core (Apache 2.0); Enterprise license availableai-agentsworkflow-orchestration