AI tools · Category
For developers
Frameworks, model platforms and building blocks that teams use to build their own AI applications.
Tools in this category
Arena
Arena Intelligence, Inc.
Platform where you compare two anonymous AI models on the same prompt, and your votes feed public leaderboards.
For developersAutoGen
Microsoft Corporation
Microsoft's open-source framework for building teams of cooperating AI agents in Python or .NET; it now gets maintenance only, no new features.
For developersCrewAI
CrewAI, Inc.
MIT-licensed Python framework that lets several AI agents with defined roles work on tasks together as a team.
For developersE2B
FoundryLabs, Inc.
Cloud platform where AI agents run model-generated code in isolated Linux sandboxes, controlled through Python or JavaScript SDKs.
For developersEden AI
Eden AI SAS
French API platform that gives access to more than 500 AI models for text, speech, OCR and image analysis through a single interface.
For developersGoogle AI Studio
Google LLC
Free Google web workspace for testing Gemini models, creating API keys and building small AI apps from a prompt.
For developersHugging Face
Hugging Face, Inc.
Central platform for open AI models and datasets, with demo hosting, an inference API and its own libraries for developers.
For developersLangChain
LangChain, Inc.
Open-source framework for Python and JavaScript that lets you build AI agents and LLM applications from models, tools and data sources.
For developersLangflow
IBM (International Business Machines Corporation)
Open-source visual builder from IBM for assembling AI agents and RAG applications by drag and drop and serving them as an API.
For developersLangGraph
LangChain, Inc.
Open-source framework from LangChain for building AI agents as a graph of individual steps, with saved state and human approvals.
For developersLlamaIndex
LlamaIndex, Inc.
Open-source framework for Python and TypeScript for building AI apps on your own documents, plus the LlamaParse cloud service for parsing.
For developersLM Studio
Element Labs, Inc.
Desktop app for running open language models locally on Mac, Windows or Linux and serving them to other tools through a local API.
For developersMicrosoft Agent Framework
Microsoft Corporation
Open-source Microsoft framework for AI agents and multi-agent workflows in Python, .NET and Go, the successor to AutoGen and Semantic Kernel.
For developersOllama
Ollama Inc.
Open-source tool for running open language models locally on Mac, Windows or Linux, optionally extended with cloud-hosted models.
For developersOpenRouter
OpenRouter, Inc.
US platform that gives you access to hundreds of AI models from different providers through one OpenAI-compatible API and a single credit balance.
For developersSnowflake Cortex AI
Snowflake Inc.
AI features built into the Snowflake data platform: language models via SQL, plain-language questions about your data, and agents.
For developersTextGen
oobabooga (Open-Source-Projekt)
Open-source browser interface for running language models offline on your own computer, including an API and LoRA training.
For developersIndependent and commission-free: vona is not affiliated with the vendors. We check prices and features regularly; the vendors’ information remains authoritative.
What to look for when choosing
These are building blocks rather than finished applications: check the licence, how actively the project is maintained and how lively the community is before you build on it. It also matters where models and data run (your own server or the cloud), how costs per request develop and whether you can switch providers later. For client projects, a small prototype is worth it before you commit.