DevTk.AI

AI Tools & Repos

Curated picks of the most impactful AI tools and repositories for developers. Updated regularly.

Last curated: Feb 2026

Pricing:

47 tools

LangChain

Featured
FreeLLM Frameworks

Framework for developing applications powered by LLMs. Provides chains, agents, retrieval, and memory modules.

pythontypescriptchains+2
132k

LlamaIndex

Featured
FreemiumLLM Frameworks

Data framework for building LLM applications over custom data. Specializes in RAG pipelines and data connectors.

pythontypescriptrag+2
48k

Vercel AI SDK

FreeLLM Frameworks

TypeScript toolkit for building AI-powered products. Unified API for OpenAI, Anthropic, Google, and more with streaming support.

typescriptreactnext.js+2
23k

Semantic Kernel

FreeLLM Frameworks

Microsoft's SDK for integrating LLMs into apps. Supports C#, Python, and Java with enterprise-grade features.

csharppythonjava+2
28k

DSPy

FreeLLM Frameworks

Programming framework for foundation models. Replace hand-written prompts with composable, optimizable modules.

pythonoptimizationprompting+1
33k

Haystack

FreeLLM Frameworks

End-to-end LLM framework by deepset. Build production-ready RAG, question answering, and semantic search pipelines.

pythonragpipelines+2
25k

AutoGen

Featured
FreeAI Agents

Microsoft's framework for building multi-agent conversational systems. Agents collaborate, debate, and solve tasks together.

pythonmulti-agentconversation+1
56k

CrewAI

FreemiumAI Agents

Framework for orchestrating role-playing AI agents. Define agents with specific roles, goals, and tools to work as a team.

pythonmulti-agentrole-playing+1
48k

OpenAI Swarm

FreeAI Agents

Lightweight multi-agent orchestration framework from OpenAI. Educational reference — superseded by OpenAI Agents SDK for production use.

pythonmulti-agentopenai+1
21k

Pydantic AI

FreeAI Agents

Agent framework by the creators of Pydantic. Type-safe, model-agnostic agents with structured output validation.

pythonpydantictype-safe+1
16k

LangGraph

FreeAI Agents

Library for building stateful, multi-actor LLM applications as graphs. Supports cycles, branching, and persistence.

pythontypescriptgraph+2
28k

AutoGPT

FreemiumAI Agents

The original autonomous AI agent. Give it a goal and it plans, executes, and iterates with minimal human intervention.

pythonautonomousplanning+1
183k

MetaGPT

FreeAI Agents

Multi-agent framework that assigns different roles (PM, architect, engineer) to collaborate on complex software tasks.

pythonmulti-agentsoftware-dev+1
66k

Model Context Protocol

Featured
FreeMCP Ecosystem

The official MCP specification and SDKs by Anthropic. Open standard for connecting AI models to external tools and data.

protocolanthropictools+2
7.7k

MCP Servers Collection

FreeMCP Ecosystem

Official collection of MCP servers for popular services — GitHub, Slack, Google Drive, PostgreSQL, filesystem, and more.

mcpserversintegrations+1
82k

Claude Code

FreemiumMCP Ecosystem

Anthropic's agentic coding tool. Uses MCP for extensibility — connect to databases, APIs, and custom tools via MCP servers.

anthropicclicoding+1

Cursor

FreemiumMCP Ecosystem

AI-powered code editor with MCP support. Integrates Claude, GPT-4, and custom models for code completion, chat, and editing.

editoridemcp-client+1

Smithery

FreemiumMCP Ecosystem

Registry and marketplace for MCP servers. Discover, install, and manage community-built MCP servers with one command.

mcpregistrymarketplace+1

Aider

Featured
FreeCode Assistants

AI pair programming in your terminal. Works with any LLM to edit code in your local git repo with automatic commits.

clipair-programminggit+1
43k

Continue

FreeCode Assistants

Open-source AI code assistant for VS Code and JetBrains. Supports any LLM with autocomplete, chat, and edit features.

vscodejetbrainsopen-source+1
32k

GitHub Copilot

FreemiumCode Assistants

GitHub's AI pair programmer. Code completions, chat, and now agent mode for multi-file edits across your workspace.

githubvscodeautocomplete+1

Cline

FreeCode Assistants

Autonomous coding agent for VS Code. Plans, writes, and debugs code with human-in-the-loop approval for each step.

vscodeagentautonomous+1
60k

Windsurf

FreemiumCode Assistants

AI-native code editor by Codeium. Features Cascade for multi-file agentic editing and Supercomplete for intelligent completions.

editorideagent+1

Bolt.new

FreemiumCode Assistants

AI full-stack web app builder by StackBlitz. Describe your app in natural language and get a complete, deployable project.

webfull-stackno-code+1

v0 by Vercel

FreemiumCode Assistants

AI-powered UI generation tool. Describe a component or page and get production-ready React/Next.js code with Tailwind CSS.

reactuitailwind+2

Devin

FreemiumCode Assistants

The first AI software engineer by Cognition. Handles complete engineering tasks: planning, coding, testing, and debugging.

autonomousagentfull-stack+1

Hugging Face Transformers

Featured
FreeModel Training

The most popular library for working with pre-trained models. Download, fine-tune, and deploy thousands of models.

pythonpytorchfine-tuning+2
159k

Unsloth

FreeModel Training

Fine-tune LLMs 2-5x faster with 80% less memory. Supports Llama, Mistral, Gemma, and other popular architectures.

pythonfine-tuningoptimization+2
59k

Axolotl

FreeModel Training

Streamlined tool for fine-tuning LLMs. YAML-based configuration for LoRA, QLoRA, full fine-tuning, and DPO/RLHF.

pythonfine-tuningyaml-config+2
12k

PEFT

FreeModel Training

HuggingFace library for parameter-efficient fine-tuning. LoRA, QLoRA, prefix tuning, and more — fine-tune with minimal resources.

pythonloraqlora+2
21k

TRL

FreeModel Training

Transformer Reinforcement Learning library. SFT, reward modeling, PPO, DPO, and ORPO training for LLMs with HuggingFace.

pythonrlhfdpo+2
18k

RAGAS

FreeData & Evaluation

Evaluation framework for RAG pipelines. Measures faithfulness, answer relevancy, context precision, and context recall.

pythonragevaluation+2
13k

Promptfoo

FreeData & Evaluation

Test and evaluate LLM outputs. Compare prompts, models, and RAG pipelines with automated testing and CI integration.

typescripttestingevaluation+2
19k

LanceDB

FreemiumData & Evaluation

Serverless vector database built on Lance format. Embedded, zero-config, and supports multi-modal data with full-text search.

rustpythontypescript+2
9.7k

Chroma

FreeData & Evaluation

Open-source AI-native embedding database. Simple API for storing and querying embeddings with metadata filtering.

pythontypescriptvector-db+2
27k

Weaviate

FreemiumData & Evaluation

Open-source vector database with built-in vectorization. Hybrid search (vector + keyword), GraphQL API, and multi-tenancy.

govector-dbhybrid-search+2
16k

Langfuse

Featured
FreemiumObservability

Open-source LLM observability platform. Tracing, prompt management, evaluation, and cost tracking for LLM applications.

typescripttracingevaluation+2
24k

LangSmith

FreemiumObservability

LangChain's platform for debugging, testing, evaluating, and monitoring LLM applications. Deep integration with LangChain/LangGraph.

langchaindebuggingmonitoring+1

Arize Phoenix

FreeObservability

Open-source AI observability by Arize. Trace LLM apps, evaluate RAG quality, detect hallucinations, and monitor in production.

pythontracingevaluation+2
9.1k

Ollama

Featured
FreeInfrastructure

Run LLMs locally with one command. Supports Llama, Mistral, Gemma, Phi, and dozens of open models.

golocalinference+2
166k

vLLM

FreeInfrastructure

High-throughput LLM inference engine. PagedAttention for efficient memory management, up to 24x higher throughput than HuggingFace.

pythoninferenceserving+2
75k

LiteLLM

FreemiumInfrastructure

Unified API proxy for 100+ LLM providers. Call OpenAI, Anthropic, Bedrock, Vertex, and local models with one interface.

pythonproxymulti-provider+2
42k

OpenRouter

FreemiumInfrastructure

Unified API for accessing many LLMs through a single endpoint. Automatic fallback, usage tracking, and competitive pricing.

apimulti-modelrouting+1

Dify

Featured
FreemiumInfrastructure

Open-source LLM app development platform. Visual workflow builder, RAG engine, agent framework, and model management in one.

pythonplatformno-code+2
135k

LM Studio

FreeInfrastructure

Desktop app to discover, download, and run local LLMs. Beautiful GUI with chat interface and OpenAI-compatible server.

desktoplocalgui+2

Jan

FreeInfrastructure

Open-source ChatGPT alternative that runs 100% offline. Download and run models locally with a clean, modern interface.

desktoplocalopen-source+2
41k

Groq

FreemiumInfrastructure

Ultra-fast LLM inference powered by custom LPU hardware. Run Llama, Mixtral, and Gemma at industry-leading speed.

apiinferencespeed+2

FAQ

How are these tools selected?

Each tool is hand-picked based on community adoption (GitHub stars, npm downloads), documentation quality, maintenance activity, and practical value for AI developers. We prioritize tools that solve real problems over hype.

How often is this list updated?

We review and update this list regularly. New tools are added as they prove their value in the ecosystem. Star counts are snapshots and may not reflect real-time numbers.

Can I suggest a tool?

Yes! Submit suggestions via our GitHub repository. We evaluate each suggestion based on the same criteria: adoption, quality, maintenance, and developer value.