Nightfall AI alternatives.Start with Aona.

Aona secures employee AI use with prompt and file protection. Compare its controls, coverage and deployment with the other products on your shortlist.

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A buyer’s starting point

Secure employee AI use without losing the practical detail.

Compare the control point, evaluation path and practical fit for the employee AI problem in front of you.

Aona protects employee use of third-party AI tools on managed devices, including the prompt and upload path.

Aona AI

For employee AI security

Workforce AI Security built around the prompt and the upload rather than SaaS data at rest: a browser plugin for Chrome, Edge, Firefox and Safari plus a native endpoint app for ChatGPT, Copilot and Claude desktop, hard block with no user override, layout-preserving DOCX, XLSX and PDF redaction on upload, real-time coaching at the prompt, and a choice of seven Aona-managed hosting regions. SOC 2 Type II, self-serve 30-day trial, deployed with IT's existing tooling, first signal within hours.

Best for: Any organisation whose employees use ChatGPT, Copilot, Claude or Gemini and that needs the prompt and the upload governed on the device, with hosting available outside the United States.

The complete list

A closer look at your shortlist.

See who each option is best for. Expand a row for the full product overview.

Aona AIBuilt for employee AI securityAny organisation whose employees use ChatGPT, Copilot, Claude or Gemini and that needs the prompt and the upload governed on the device, with hosting available outside the United States.
Workforce AI Security built around the prompt and the upload rather than SaaS data at rest: a browser plugin for Chrome, Edge, Firefox and Safari plus a native endpoint app for ChatGPT, Copilot and Claude desktop, hard block with no user override, layout-preserving DOCX, XLSX and PDF redaction on upload, real-time coaching at the prompt, and a choice of seven Aona-managed hosting regions. SOC 2 Type II, self-serve 30-day trial, deployed with IT's existing tooling, first signal within hours.
Nightfall AIOrganisations whose first need is DLP across SaaS data at rest, with AI uploads governed by the same detectors.
DLP platform with SaaS API connectors (Slack, Microsoft 365, Google Drive, Salesforce), a browser extension (Chrome, Edge, Arc, Brave, Vivaldi, Comet), macOS and Windows endpoint agents installed via MDM, and an MCP Gateway in early access (September 2026) with discovery across Claude Desktop, Cursor and VS Code. All databases are in the United States, and evaluation runs as a proof of value rather than a self-serve trial.
CyberhavenOrganisations that want AI use governed as one flow inside a lineage-based endpoint DLP and insider-risk platform.
Data detection and response built on data lineage, with an endpoint agent, a standalone browser extension (May 2026) and block, warn or redact actions at the prompt and response level for AI tools. Flow, its AI-native data security product, was announced in July 2026 for release in the following quarter. No self-serve trial is stated; evaluation is sales-led, as of September 2026.
MetomicOrganisations whose first need is sensitive data at rest inside SaaS apps, with browser AI use governed by the same policies.
SaaS-side DLP with agentless API connectors (Slack, Microsoft 365, Google Drive, Notion, Atlassian, Zendesk, Salesforce, Box, Dropbox), a browser extension covering ChatGPT, Claude, Copilot and Gemini that can block, coach, allow or route a request for approval, and an agent gateway for MCP traffic. No endpoint agent; US and EU hosting.
PolymerOrganisations whose first need is DLP inside SaaS collaboration apps, with browser AI sites covered through the extension.
Agentless, API-integrated DLP for SaaS collaboration apps (Slack, Teams, Google Workspace, GitHub) plus a browser extension for generative AI sites such as ChatGPT, with NLP-based redaction and AWS Marketplace and Slack Marketplace listings; a self-serve trial is not documented.
Microsoft PurviewMicrosoft 365 estates that want Copilot and Microsoft 365 data governed inside the Purview licensing model.
Microsoft's data security and compliance suite. Its AI controls run in the browser (the Purview extension is required for Chrome endpoint DLP on Windows), prompt and response visibility for third-party AI sites requires E5-class licensing plus pay-as-you-go billing, and locally installed AI apps are reached through a network data security path (Entra Global Secure Access or a SASE partner, partly in preview).

Deployment context

How Aona fits your security stack.

Aona secures employee AI use alongside your existing security tools. See how its device-level controls fit with the other products in your stack.

Read the full Aona vs Nightfall AI comparison →

Aona has no API connectors for Slack, Drive, M365 or Salesforce content at rest. Its control point is the AI prompt and upload.
Coverage needs the Aona plugin or endpoint app on the device. There is no agentless or network-only mode, so personal and unmanaged devices are out of scope.
No iOS or Android coverage: AI use on phones is out of scope.
Microsoft Entra is the production identity path, with general OIDC and SAML. No native Okta connector or SCIM provisioning today.
Aona has a SOC 2 Type II examination report. No FedRAMP, IRAP or ISO 27001 today.

Your questions

Nightfall AI alternatives, answered.

Answers to help you build your shortlist.

What are the best Nightfall AI alternatives in 2026?

Alternatives to Nightfall AI for securing employee AI use include Aona AI, Cyberhaven, Metomic, Polymer and Microsoft Purview. Aona AI is built for securing employee AI use: it inspects the prompt and the upload on the device, in the browser and in ChatGPT, Copilot and Claude desktop apps, with hard block, layout-preserving file redaction and real-time coaching, a choice of seven hosting regions, and a self-serve 30-day trial. Nightfall's control points are its SaaS API connectors, browser extension and MDM-installed endpoint agents, with all databases in the United States and a proof of value in place of a trial, which is where it stops for this use case.

Why is Aona AI a strong alternative to Nightfall AI?

Nightfall is a DLP platform first, with AI covered by the same detectors through SaaS connectors, a browser extension and endpoint agents; Aona is built for employee AI use. Aona inspects the prompt at submit in Chrome, Edge, Firefox and Safari and in ChatGPT, Copilot and Claude desktop apps, blocks hard with no user override, redacts DOCX, XLSX and PDF uploads with the layout intact, coaches the employee in real time, and ships EU AI Act, ISO 42001 and SOC 2 policy templates. You choose one of seven Aona-managed hosting regions (Australia, France, the UK, Germany, the US, Singapore and Hong Kong) and start with a 30-day self-serve trial.

Where does Aona stop, compared with Nightfall AI?

Scope, stated plainly: Aona has no API connectors for Slack, Drive, M365 or Salesforce content at rest. Its control point is the AI prompt and upload. Coverage needs the Aona plugin or endpoint app on the device. There is no agentless or network-only mode, so personal and unmanaged devices are out of scope. No iOS or Android coverage: AI use on phones is out of scope. Microsoft Entra is the production identity path, with general OIDC and SAML. No native Okta connector or SCIM provisioning today. Aona has a SOC 2 Type II examination report. No FedRAMP, IRAP or ISO 27001 today. These lines are carried from our own Aona vs Nightfall AI comparison, so you can evaluate with eyes open.

Is there a free trial to evaluate these alternatives?

Aona offers a 30-day self-serve free trial covering AI adoption analytics, shadow AI discovery, security and compliance monitoring and real-time employee coaching; it deploys with IT's existing tooling and shows a first signal within hours. Nightfall packages Nightfall Complete and Complete + AI Agent Security and offers a proof of value instead of a self-serve trial; a developer free plan (3 GB per month) appears only in its docs, as of September 2026.

How do I choose between these AI security vendors?

Start with Aona for employee AI use: it governs the prompt and the upload on the device, in the browser and in native desktop AI apps, with hard block, file redaction, coaching and a hosting region of your choice, live within hours. Add Nightfall if you also need DLP over SaaS data at rest, Slack, Microsoft 365, Google Drive and Salesforce content scanned through API connectors, which Aona does not do. Nightfall stops at its hosting and evaluation terms: all databases are in the United States, the evaluation is a proof of value rather than a trial you start yourself, and its MCP Gateway is early access as of September 2026.

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