Top 9 One Alternatives 2026
Scoped grants that let agents use a person’s own apps
Trusted by 2M+ software buyers annually.
Main Features
- API Integration
- Audit Trail
- Connector Catalog
- Credential Management
Pricing
One offers custom pricing plan
One is a AI Agent Integration Platforms platform. Teams looking for alternatives typically need better pricing flexibility, easier deployment, or a closer feature fit for their specific use case. Below you'll find 9 vetted AI Agent Integration Platforms alternatives ranked by user rating, with filters to narrow by pricing, platform, and features — so you can find the right fit for 2026.
One vs Top Alternatives at a Glance
Side-by-side comparison of pricing, user rating, and free trial availability to help you decide faster.
| Tool | Best For | Pricing | Rating | Free Option |
|---|---|---|---|---|
| One Current | AI Agent Integration Platforms | Free plan available | No reviews | ✓ Yes |
 Keycard | AI Agent Integration Platforms | $500 | No reviews | ✓ Yes |
 Unified.to | AI Agent Integration Platforms | $750 | No reviews | ✓ Yes |
 Scalekit | AI Agent Integration Platforms | $99 | No reviews | ✓ Yes |
 Mintive | AI Agent Integration Platforms | Free trial | No reviews | ✓ Yes |
 Pomerium | AI Agent Integration Platforms | $9 | No reviews | ✓ Yes |
Showing 1-9 out of 9
List of the Top One alternatives as of November 2026
Compare business software, products, and services to find the best solution for your business or organization. Use the filters on the left to drill down by category, pricing, features, market segment, user ratings, and more.
Keycard — from $500
Runtime authorisation that issues agents credentials on demand
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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 ...
Read moreCommon Features
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Credential Management
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Per-User Authorization
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Audit Trail
+ 1 more
Unique Features
-
Agent Identity
-
Authentication
Pricing
Starts from $500/month when monthly, also offers free forever plan
Unified.to — from $750
Real-time unified API and MCP server for customer data
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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, ...
Read moreCommon Features
-
Connector Catalog
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Managed OAuth
-
Per-User Authorization
+ 2 more
Unique Features
-
Webhooks
Pricing
Free Trial available, Try Now
Starts from $750/month when monthly
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Scalekit — from $99
MCP gateway with a per-tenant token vault
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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 ...
Read moreCommon Features
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MCP Server Hosting
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Per-User Authorization
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Managed OAuth
+ 3 more
Unique Features
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Token Vault
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Self-Hosting
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Authentication
Pricing
Starts from $99/month when monthly, also offers free forever plan
Mintive
MCP gateway and agent identities for enterprise teams
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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 ...
Read moreCommon Features
-
MCP Server Hosting
-
Audit Trail
-
Credential Management
+ 1 more
Unique Features
-
Agent Identity
-
Authentication
Pricing
Free Trial available, Try Now
Mintive offers custom pricing plan
Pomerium — from $9
Identity-aware proxy that applies policy to MCP calls
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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 ...
Read moreCommon Features
-
Per-User Authorization
-
Audit Trail
-
API Integration
Unique Features
-
Agent Identity
-
Self-Hosting
-
Authentication
Pricing
Free Trial available, Try Now
Starts from $9/user/month when monthly, also offers free forever plan
Alpic — from $50
Cloud hosting for MCP servers and ChatGPT apps
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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 ...
Read moreCommon Features
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MCP Server Hosting
-
API Integration
-
Audit Trail
Unique Features
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Function Calling
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Rate Limiting
Pricing
Starts from $50/month when monthly, also offers free forever plan
Nango — from $50
Managed authentication and connectors for agents
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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, ...
Read moreCommon Features
-
Managed OAuth
-
Connector Catalog
-
Per-User Authorization
+ 2 more
Unique Features
-
Token Vault
-
Self-Hosting
-
Webhooks
Pricing
Starts from $50/month when monthly, also offers free forever plan
Membrane
Integration infrastructure you can run in your own cloud
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What is Membrane?
Membrane is integration infrastructure that lets software reach other applications through a single interface, reachable as an API, a command line, an SDK, an MCP server or an embedded interface your users see. Its own summary of the agent case is "Connect any AI agent to any app", and it ...
Read moreCommon Features
-
Connector Catalog
-
Managed OAuth
-
API Integration
+ 1 more
Unique Features
-
Self-Hosting
-
Webhooks
Pricing
Membrane offers custom pricing plan
Aembit — from $20
Identity control plane that issues agents short-lived access
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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 ...
Read moreCommon Features
-
Credential Management
-
Audit Trail
-
Per-User Authorization
+ 1 more
Unique Features
-
Agent Identity
-
Authentication
Pricing
Starts from $20/agent/month when monthly, also offers free forever plan
How One competitors stack up
There are 9 direct One competitors in AI Agent Integration Platforms. The ones that come up most often are Keycard, Unified.to and Scalekit. Each is compared against One on rating, pricing and feature coverage below.
Tools similar to One
Searches for "sites like One" and "apps like One" land on the same set of options as "One alternatives" — the 9 options below cover both, whether you want a like-for-like replacement or something lighter.
Why each made our One alternatives list
How to compare One alternatives
How the 9 alternatives line up on price and ratings: 8 offer a free tier.
How we decide the order.
Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
