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📖 The AI Tool Bible

GitHub

San Francisco, US· founded 2008· acquired· website ↗

Code-hosting incumbent (Microsoft-owned). Ships Copilot (Chat + IDE + PR reviews + Workspace) and the broader Copilot ecosystem. Deepest developer distribution in the industry.

19 tools in the directory

GC

GitHub Copilot

Featured
Coding · GPT / Claude / OpenAI o-series (configurable)
9.1

The original AI pair programmer, now with chat and agents.

Paid· Free: $0 · Pro: $10 · Pro+: $39 · Max: $100autocompletechat
SI

Sim

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

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

Freemium· Free: $0 · Pro: $25 · Max: $100 · Enterprise: Customagent-workflowsinternal-automation
RA

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
OP

OpenHands

Agents · Multi-model (Claude, Gemini, GPT/Codex)
8.0

Open-source autonomous coding agent that plans, edits, and ships changes across real codebases.

Freemium· Open Source: Free · Individual: Free · Enterprise: Custom pricingautonomous-codingpr-review
AT

Atua

Agents · Multi-model (BYO key)
7.9

Keyboard-summoned macOS AI assistant that reads your screen and drives system apps with your own API keys.

Paid· One-time $29, lifetime updates, 7-day refundmacos-assistantscreen-context
KH

Khoj

Agents · Multi-model
7.9

Open-source personal AI that builds agents, searches your documents, and automates research across local files and the web.

Freemium· Free self-hosted; paid cloud tier on app.khoj.devpersonal-knowledge-baseagent-building
EM

Emergent Mind

RAG · Undisclosed
7.2

AI-curated arXiv discovery layer that summarizes frontier papers and aggregates social discussion around them.

Freemium· Basic: $0 · Pro: $12 /month · Max: $30 /montharxiv-discoverypaper-summarization
NO

NoteGen

Writing · Multi-model (Qwen3-8B, BAAI/bge-m3, GLM-4.1V-9B-Thinking, BYO keys)
7.2

Open-source local-first note-taking app that uses AI to turn raw clippings into structured Markdown.

Free· Free and open source (GPL-3.0); bring your own model keys if you want paid LLMsnote-takingknowledge-management
CA

Capacity

Coding · Multi-model
7.1

AI app builder that generates full-stack React + Express + SQLite apps from natural language specs.

Freemium· Starter: $25 · Growth: $69 · Professional: $129 · Business: $299app-prototypingmvp-builder
PA

Puzzlet AI

Agents · Multi-model
7.1

Git-native prompt management and observability platform for teams shipping LLM applications.

Freemium· Basic: $20 · Pro: $50 · Enterprise: Contact salesprompt-managementllm-observability
PA

PageIndex

RAG
7.0

Vectorless reasoning-based retrieval for long documents, with traceable, auditable answers.

Freemium· Free Try Now tier; enterprise pricing on requestdocument-qalong-pdf-retrieval
SA

SWE-agent

Agents · Multi-model (GPT-4o, Claude Sonnet, DeepSeek, local via LiteLLM)
7.0

Open-source autonomous agent framework that lets LLMs fix GitHub issues and find security vulnerabilities by using a custom agent-computer interface.

Free· Free and open-source; you pay your own LLM API costsgithub-issue-fixingautonomous-coding
CA

Callstack.ai PR Reviewer

Coding
6.9

AI pull request reviewer that flags bugs, security issues, and style drift against your team's own guidelines.

Freemium· Basic: $10 · Pro: $20 · Enterprise: Contact salespr-reviewbug-detection
FO

Folo

Agents · DeepSeek
6.9

Open-source AI RSS reader that summarizes feeds and cuts noise from 1M+ sources.

Freemium· Basic: $4.17 · Plus: $8.33 · Pro: $83.33rss-readingnews-summarization
GS

GitHub Spec Kit

Coding · Multi-model
6.9

Open-source toolkit that forces AI coding agents through a Spec to Plan to Tasks to Implement workflow.

Free· Free and open-source (MIT)spec-driven-developmentai-coding-agents
GA

Guild AI

Agents · Multi-model (bring your own)
6.9

Control plane for deploying, governing, and auditing AI agents in production.

Freemium· Free: $0 · Individual: $20 · Team: $200 · Enterprise: Contact usagent deploymentagent governance
ME

MemOS

Agents · Multi-model
6.9

Memory operating system that gives LLM agents long-term, structured recall across sessions and models.

Freemium· 免费版: ¥0 元 · 入门版: ¥0 元原价 150元/月 · 专业版: ¥0 元原价 2000元/月 · 企业版: 灵活定价agent-memorylong-term-context
DA

DagsHub

Fine-tuning
6.8

GitHub-style collaboration platform for ML datasets, experiments, and models with MLflow and DVC under the hood.

Freemium· Individual: $0 per user/month · Team: $119 per user/month · Enterprise: Custom quoteexperiment-trackingdata-versioning
SA

Sauna

Agents
6.7

Multiplayer AI agent platform that runs always-on across your team's apps and shared workflows.

Freemium· Lite: $29 · Basic: $99 · Pro: $299 · Team: $999workflow-automationteam-coordination