Best Glean Alternatives in 2026

Personal knowledge base & note-taking

An AI employee that lives in Slack and Teams and does the actual work

Web-scale open, deep, and dark web data via APIs for AI and intelligence products

A dev-first, open-source framework for building, running, and managing autonomous AI agents.

AutoGPT is an open-source AI system that uses large language models like GPT-4 to autonomously pursue user-defined go...

The agentic AI operating system that turns enterprise operational data into real-time decisions and autonomous execution.

AI search that understands intent and takes action across any use case, industry, or team

Your native open source AI agent for code, workflows, and everything in between.

Platform for building, customizing, and deploying custom AI agents across your channels.

Open-source API layer that turns local models into production private AI applications.

Self-hosted, EU-compliant operating system for running AI agents on your own infrastructure.

Enterprise platform to build and govern MCP servers with curated context and cost-to-accuracy evals.

Enterprise AI agent that operates software like a human by clicking, typing, and navigating UIs

Build teams of specialist AI agents that run tasks reliably at the lowest passing cost.

Visual node-based IDE for building, testing, and deploying AI agents without code

Dia is an AI-native browser from The Browser Company (creators of Arc) that integrates with tools like Slack, Notion,...

Opera Neon is a standalone paid agentic browser from Opera that deploys multiple AI agents to research topics, write

An AI consultancy that builds and ships production AI agents into your existing business tools.

Visually build AI workflows, backend APIs, and business automation with AI.

Open-source autonomous agent framework for automating data labeling with LLMs

A knowledge management app that organizes notes as connected objects instead of files and folders

No-code platform to build, train, and deploy AI agents and multi-agent workflows.

Cloud browser infrastructure for deploying reliable AI agents that automate any web task