Best AI agents and workflows (2026)

24/7 AI employee team for automating complex challenges. Low-code multi-agent framework with handoffs, guardrails, memory, RAG, and 100+ LLM providers

AI prompt optimization tool with multi-round iterative improvements, dual-mode optimization for system and user prompts, and multi-model support. Available as web app, desktop app, Chrome extension, and Docker deployment. AGPL-3.0 licensed

Workflow engine for deterministic AI coding agents. Define development processes as YAML workflows (planning → implementation → validation → review → PR) with isolated Git worktrees for parallel execution. MIT licensed

Agent2Agent (A2A) open protocol enabling communication and interoperability between opaque agentic applications. Donated to Linux Foundation by Google with 50+ technology partners. Apache 2.0 licensed

First and best multi-agent framework for building scalable agent systems. Apache 2.0 licensed with extensive tooling for agent communication and task automation

PHP Agentic Framework for building production-ready AI driven applications. Connect components (LLMs, vector DBs, memory) to agents that can interact with your data. MIT licensed

Lightweight agent framework centered on tool use and code-executing workflows

Memory API and app for AI agents that provides fast, scalable, context-aware storage and retrieval across projects. MIT licensed

State-of-the-art long-term memory for AI agents by Vectorize. Fully self-hosted, MIT-licensed, with integrations for LangChain, CrewAI, LlamaIndex, Vercel AI SDK, and more

MCP server for persistent AI agent memory with atomic notes, semantic linking, and SQLite or PostgreSQL storage

Universal memory layer for AI agents. Persistent, multi-session memory across models and environments

Platform for building stateful agents with advanced memory that learn and self-improve over time

Self-hostable internal app builder with AI app and agent workflows for operations teams

Self-hostable security automation platform for building agentic workflows across alerts, cases, and operations

Fast and lightweight framework for creating decentralized agents with ease. Agents automatically join the network by registering on the Almanac smart contract. Supports agent-to-agent communication out of the box. Apache 2.0 licensed

Stateful agent workflow platform with memory, tools, branching, and long-running task execution

Open-source automation platform with AI agents, MCP integrations, and self-hosted workflow orchestration

Self-hostable workflow automation platform with AI agent nodes, tool integrations, and production automation workflows

Conversational control layer for customer-facing AI agents. Enterprise-grade context engineering framework optimized for consistent, compliant, and on-brand B2C and sensitive B2B interactions. Apache 2.0 licensed

Multi-agent framework for financial trading. Simulates professional trading firm operations with 6+ specialized agent roles, backtesting, risk management, and portfolio optimization. Built with LangGraph, supports multiple LLM providers

Open-source browser API for AI agents and apps. Batteries-included browser sandbox for web automation without infrastructure worries. Apache 2.0 licensed

Token and output compression middleware for AI agents and RAG workflows, reducing context footprint while preserving semantics (claims up to 60-95% fewer tokens). Apache 2.0 licensed

Makes websites accessible for AI agents. Enables autonomous web automation, data extraction, and task completion with natural language instructions. MIT licensed

Open-source multimodal AI agent stack with native GUI agent capabilities. Desktop application bringing GUI agent and vision power to your computer, browser, and terminal. Apache 2.0 licensed

Powerful GUI agent family for autonomous mobile device control. Multimodal agent framework designed to operate smartphone apps through visual UI perception and reasoning. MIT licensed

Open agentic framework that uses computers like a human. SOTA on OSWorld benchmark (72.6%) for GUI automation and computer control

Workshop-level automated scientific discovery via agentic tree search. Generates novel research ideas, runs experiments, and writes papers

Autonomous agent that conducts deep online research on any topic. Generates comprehensive reports with citations by orchestrating web searches, content scraping, and synthesis. Apache 2.0 licensed

Advanced multi-agent collaboration system

Production-ready agentic workflow platform

Visual low-code platform for agentic workflows

Tool integration layer for AI agents with 1000+ toolkits, authentication management, and sandboxed workbench. Powers tool use across major frameworks

Open-source tools for prompt testing and experimentation with support for LLMs and vector databases. Test prompt variants across multiple providers (OpenAI, LLaMA) and vector stores (Chroma, Weaviate, LanceDB). Apache 2.0 licensed

Library to build and auto-optimize LLM applications with LLM-AutoDiff for fine-tuning-free optimization. End-to-end workflow optimization with tracing and human-in-the-loop capabilities. MIT licensed

Enforce output format (JSON Schema, Regex, etc) of language models by filtering allowed tokens at each generation step. Compatible with Hugging Face, llama-cpp-python, and vLLM. MIT licensed

Fast, flexible and portable structured generation engine. Default backend for vLLM, SGLang, TensorRT-LLM, and MLC-LLM with flexible grammar support and zero-overhead mask generation. Apache 2.0 licensed

Efficient programming paradigm for steering language models. Control output structure with loops, conditionals, and regex constraints inline. Reduces latency and cost vs conventional prompting. MIT licensed

Pioneering framework for structured and meta-prompt design. Battle-tested by thousands of users worldwide with 10,000+ stars. The most popular prompt engineering paradigm for creating reusable, maintainable prompt templates. Apache 2.0 licensed

Task-based NLP engine with Pydantic structured outputs, built-in evaluation, and LiteLLM as the universal LLM backend. Think "scikit-learn for LLM-powered NLP". Apache 2.0 licensed

Structured outputs for LLMs. Guarantees valid JSON, regex-compliant text, and Pydantic model outputs during generation. Trusted by NVIDIA, Cohere, Hugging Face, and vLLM. Apache 2.0 licensed

Your agent in your terminal, equipped with local tools: writes code, uses the terminal, browses the web. Make your own persistent autonomous agent on top. MIT licensed

Memory-first coding harness designed for long-lived agents that learn from experience. Persistent agents with portable memory across models (Claude, GPT, Gemini, GLM, Kimi). CLI and desktop app for macOS, Windows, and Linux. Apache 2.0 licensed

Asynchronous coding agent from the LangChain ecosystem for background software engineering tasks

Open-source agentic coding assistant with IDE workflows, tool use, and support for local or OpenAI-compatible models

Software-engineering agent from ByteDance for autonomous coding tasks and repository-level development workflows

Lightweight coding agent for repository and issue-fixing workflows, designed for simple agentic software engineering experiments

Open-source AI agent that brings Gemini's power directly into your terminal. Supports code generation, shell execution, and file editing with full Apache 2.0 licensing

Beautiful local-first coding agent running in your terminal. Built for privacy and control with support for multiple AI providers via OpenRouter