📖 The AI Tool Bible

All AI tools

702 tools

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

NightCafe

Image Generation · Multi-model (Flux, DALL-E 3, Ideogram, SDXL, Imagen, Runway, Kling)
8.1

Multi-model AI art generator with a heavy social-network bent and daily community challenges.

Freemium· Free daily credits; PRO subscription for more credits and premium modelstext-to-imageai-video

NotebookLM

RAG · Gemini 2.5
8.1

Google's source-grounded research notebook that turns your documents into chats, briefs, and AI-hosted podcasts.

Freemium· Free tier; Plus via Google One AI Premium ($19.99/mo) or Workspace add-ondocument Q&Aresearch synthesis

OpenAI Evals

Evaluation · OpenAI GPT models (extensible)
8.1

OpenAI's open-source framework for benchmarking LLMs against a shared registry of evaluations.

Free· Free (MIT); you pay OpenAI API costs for eval runsllm-benchmarkingregression-testing

Optuna

Fine-tuning
8.1

Open-source Python framework for automated hyperparameter optimization across any ML stack.

Free· Free and open source (MIT)hyperparameter-tuningml-experiment-tracking

PyGPT

Writing · Multi-model (GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Ollama)
8.1

Open-source desktop AI assistant that wires every major LLM provider into one local app with agents, vision, and a code interpreter.

Free· Free and open-source (MIT); bring your own provider API keysdesktop-ai-assistantchat-with-files

RAGFlow

RAG · Multi-model
8.1

Open-source RAG engine with deep document parsing, hybrid search, and visual agent orchestration.

Freemium· Free tier; Starter $29/mo; Pro $129/mo; Enterprise customdocument-qaenterprise-search

Ray Tune

Fine-tuning
8.1

Open-source Python library for distributed hyperparameter tuning at any scale.

Free· Open-source (Apache 2.0); managed via Anyscale offers a $100 starting credithyperparameter-tuningdistributed-training

Read AI

Audio · Multi-model
8.1

AI meeting copilot that transcribes, summarizes, and surfaces action items across Zoom, Meet, and Teams.

Freemium· Free (5 meetings/mo); paid tiers + Enterprisemeeting-transcriptionmeeting-summaries

Recraft

Image Generation · Recraft V4.1
8.1

AI image and vector generator built for designers who actually need editable, brand-consistent output.

Freemium· Free tier in Recraft Studio; paid plans and enterprise tier availabletext-to-imagevector-generation

Repomix

Coding
8.1

Packs an entire codebase into a single AI-friendly file so LLMs can actually read your repo.

Free· Free and open source (MIT)codebase-to-llmcode-review

Respeecher

Audio · Proprietary Respeecher voice models
8.1

Studio-grade AI voice cloning and TTS used by Hollywood productions for speech-to-speech and dubbing work.

Freemium· Free trial; TTS API $2/hour pay-as-you-go; custom enterprise pricing for voice cloningvoice-cloningtext-to-speech

Synthesia

Video · Synthesia proprietary
8.1

Enterprise AI avatar video creator for L&D and product marketing.

Paid· From $22/mo per seat Personal; $89/mo Starterenterprise trainingproduct marketing

Together AI Fine-tuning

Fine-tuning · Multi-model (any Hugging Face open-source model)
8.1

Managed fine-tuning platform for open-source LLMs and vision models with LoRA, full fine-tuning, and RL support.

Paid· Usage-based; cost estimator in-product, no public price listllm-fine-tuningvision-fine-tuning

TruLens

Evaluation · Multi-model (LLM-as-judge)
8.1

Open-source evaluation and tracing framework for LLM apps and agents, built on OpenTelemetry.

Free· Free, open source (Apache-licensed Python package)llm-evaluationrag-evaluation

W&B Weave

Evaluation · Multi-model
8.1

Production observability, tracing, and evaluation for LLM and agent systems from the Weights & Biases stack.

Freemium· Free tier available; paid and enterprise plans via W&Bllm-tracingagent-observability

Windsurf

Coding · SWE-1.6 Fast (plus Claude Agent, OpenCode via ACP)
8.1

AI-native IDE turned agent command center, now folded into Cognition's Devin lineup.

Freemium· Free; Pro $20/mo; Max $200/mo; Teams $80/mo + $40/seat; Enterprise customai-idecoding-agents

16x Prompt

Coding · Multi-model (BYO key)
8.0

Desktop prompt-composer for AI coding that bundles repo context, diffs, and multi-model comparison.

Freemium· Free: 10 prompts/day; paid individual and team licensesprompt-engineeringai-pair-programming

CAMEL-AI

Agents · Multi-model
8.0

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

ChatGPT

Writing · GPT-4o, GPT-4.1, o-series reasoning models
8.0

OpenAI's flagship conversational assistant, and the default benchmark every other chatbot is measured against.

Freemium· Free; Plus $20/mo; Pro $200/mo; Team $25-30/user/mo; Enterprise customwritingcoding

Civitai

Image Generation · Stable Diffusion (SD1.5, SDXL, SD3, Flux, Pony, Illustrious)
8.0

Community hub for Stable Diffusion models, LoRAs, and AI-generated imagery with on-platform generation.

Freemium· Free browsing/downloads; Buzz credits + Civitai Pro subscription for on-site generation and perksstable-diffusion-modelslora-discovery

Cody

Coding · Claude / GPT / Mixtral (configurable)
8.0

Sourcegraph's AI coding assistant — codebase-aware via their search index.

Freemium· Free; Pro $9/mo; Enterprise customenterprisemonorepos

Edge Impulse

Fine-tuning · Multi-model (TF Lite Micro, custom DSP blocks)
8.0

End-to-end platform for training and deploying ML models on microcontrollers, sensors, and other edge hardware.

Freemium· Free developer tier; paid Professional and Enterprise plans (contact sales)edge-aitinyml