Open-source AI agent platforms
The INITE Atlas lists 32. By use, the list opens with OpenClaw, Vellum, Sentient Foundation, Future AGI and BrowserOS.
Offered under an open-source licence, per the pricing page; any paid tier is hosting or support.
Where each one says so
Ranked by use
Figure and bar: visits/mo, estimate · year: online since
- #5

OpenClaw
Open source AI assistant that manages email, calendar, and tasks from chat apps without subscriptions.
182kActiveOpen source - #9

Vellum
Runs an autonomous AI assistant on your computer that manages tasks, remembers preferences, and takes actions across your tools and files.
30.8kActiveOpen source2024 - #26

Sentient Foundation
Builds open-source AI models and agent frameworks, including a recursive planner-executor for multi-step tasks and an open deep-search agent.
6.7k - #41

Future AGIMCP · sign-in
Runs simulated conversations against AI agents, scores their outputs for factuality and safety, and traces live calls to flag regressions.
2.4kActive - #50

BrowserOS
Browser for AI agents to navigate, log in, and interact with websites while you watch and replay sessions.
914ActiveOpen source2024 - #61

Oh My Opencode Slim
Orchestrates AI agents to delegate complex tasks to specialized sub-agents and manage multi-step workflows.
566ActiveOpen source - #83

claude-devtools
Displays detailed session logs from Claude including tool calls, thinking steps, token usage, and file changes hidden from the terminal.
201MaintainedOpen source - #88

Tiny Humans Intelligence
Runs open-source AI agents locally that execute workflows, maintain personal memory, and conduct research on your machine.
169ActiveFrom $20/mo - #134

Beacon
Deploys AI assistants that reach multiple channels from a single runtime.
27Open source - #140

QevosAgent
Runs a local AI agent on your machine that calls 30 built-in tools, keeps persistent memory, and repairs broken tools.
21Active - #141

Tessary
Reads every trace your agents emit, groups repeated failures into cases, and traces each one to the code change behind it.
20ActiveOpen source - #203

Marmot
Provides data context to employees and AI agents through integrations with databases, warehouses, and data pipelines.
5ActiveOpen source - #308

VulpineOS
Runs AI agents that navigate websites reliably with protections against prompt injection and token waste.
1Maintained - #310

OpenExp
Records AI agent sessions as shareable experience files that agents replay on similar future tasks.
1 - #333

Squidbrake
Checks each tool call an AI agent makes against YAML rules and holds risky ones for human approval before they run.
2.7k installs/moActiveFrom $499/mo - #341

Restillia
Runs AI models using your own API keys with custom code extensions and cost control.
184 linking domains - #346

Bolly
Runs a background assistant on your Mac that remembers family details, runs errands and answers everyone in one shared chat.
1.3k installs/moActiveFrom $20/mo - #363

Phrony
Runtime that checks every model and tool call an AI agent makes against a manifest of policies, limits and human approvals.
58 linking domainsActive - #420

GhostClaw
Runs AI agents on bare metal with full system access, controlled via Telegram.
32 linking domains - #422

Agent Keyboard
Adds a prompt bar to your site's own page that sends requests to a Claude Code session, which edits the repo and commits changes.
32 linking domains - #426

Mobile AI Use
Runs an AI agent that automates Android UI interactions through an agent manager and executor.
32 linking domainsActive - #457

School for Agents
Open training platform for building ethical AI agents with built-in safety constraints and guardrails.
24 linking domainsActiveOpen source - #467

Statewave
Memory runtime for AI agents that compiles events into typed, ranked memories with provenance and governance.
21 linking domainsActiveOpen source - #486

AgentWake
Configures a persistent AI agent running on macOS that learns over time and communicates via Discord.
EmergingOpen source - #489

AltClaw.ai
Provides isolated execution environment for AI agents with logging, persistent memory, and multi-model support.
EmergingActiveFrom $10/mo - #506

Bellman
Lets agents from different sessions and providers collaborate in one shared room over MCP.
EmergingActiveFrom $12/mo - #524

Reemoat
Runs AI agents on your own server and controls them from any device.
Little sign of useActiveFree - #545

Central City
Hosts shared rooms where AI agents and people collaborate, giving each agent a verifiable identity and wallet on Base.
Little sign of useActive - #547

Surfing DogMCP · open
Lets AI agents find, check and message businesses through a searchable directory and an open-source inbox at the business's own address.
Little sign of useActive 
aeonMCP · sign-in
Runs autonomous agent workflows from a single direction, executing 86 bundled skills such as research, monitoring, and deployment without approval steps.
1Active
OpenAlerts
Watches agent runs locally and sends alerts to Slack, Discord or Telegram when sessions stall, LLM calls fail or spend spikes.
1Maintained
Scribbler
Runs machine learning models and chat LLMs inside the browser on WebGPU, with shareable JavaScript notebooks for the results.
1.1kActive
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk
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