Top 9 Membrane Alternatives 2026

What is Keycard?

Keycard is runtime authorisation for agents. Its own line is "Runtime auth for agents", giving each agent an identity of its own, the authority to act, and access to resources under a policy you write. Every credential request is checked against that policy at the moment it is made, and a ...

What is Unified.to?

Unified.to gives an application or an agent one normalised way to read and write a customer’s data across the software that customer already uses. Its own line is "Secure real-time unified API + MCP", covering more than 2,150 integrations across 39 categories including CRM, applicant tracking, ...

What is One?

One calls itself the trust layer for AI agents: a person connects each of their applications once inside their own One account, and an agent then receives a scoped grant rather than the credential. Every action is recorded and the person can withdraw access at any time. The connection runs over ...

What is Mintive?

Mintive calls itself "Infrastructure for the agentic enterprise" and routes every AI call a company makes through one gateway it controls. The platform covers five parts: an MCP gateway, an LLM gateway, agent identities, an agent monitor and coworker agents that sit in Slack and Teams. Each ...

What is Pomerium?

Pomerium is an identity-aware proxy that checks every request against who is making it and why, and it now covers agent traffic as well as human traffic. Its own line for that work is "Move confidently with agents", with the stated aim that agents never leak secrets, make unauthorised calls or ...

What is Alpic?

Alpic is a cloud platform for building, deploying and running MCP-based applications, described on its own site as a way to "Build, deploy and distribute ChatGPT apps & MCP servers". A server is deployed in one step from a GitHub repository or the Alpic command line and comes back as a live ...

What is Nango?

Nango gives an agent access to a named user’s accounts in other software. Its own description is "Integrations for agents", with access to 1,200 or more APIs and MCP servers and roughly 10,000 callable actions behind them. Nango runs the sign-in handshake for each application, keeps the grant, ...

What is Scalekit?

Scalekit puts one MCP endpoint between an agent and everything it calls, and its own site sums that up as an MCP gateway for agents where every call is authenticated, scoped and logged. Behind that endpoint sit 600 or more connectors covering around 30,000 callable actions, and you can register ...

What is Aembit?

Aembit describes itself as an "Identity Control Plane Built for Agents": every access request an agent makes is checked against a verified identity, granted short-lived authorisation, and written to a compliance log that names who and what was involved. It covers agent-to-resource access and ...