OneSignal consent management alternative

If you’re looking for a consent management alternative to OneSignal, it depends on what you mean by “alternative”:

1) If you want a push notification / messaging platform with consent handling

Here are common alternatives:

• Firebase Cloud Messaging (FCM)
  Good for Android/web push. You handle more of the consent logic yourself.

• Braze
  Strong for customer engagement, segmentation, and consent/preferences management.

• Airship
  Enterprise-grade messaging with solid consent and preference center capabilities.

• CleverTap
  Engagement platform with user consent/preferences support.

• MoEngage
  Similar marketing automation and user preference management.

• EngageBay / Customer.io / Iterable
  Useful if you want messaging plus user preference/consent workflows.

2) If you want a dedicated consent management platform (CMP)

For cookie/privacy consent rather than push consent, consider:

• OneTrust
• Cookiebot
• Didomi
• Usercentrics
• Quantcast Choice
• Osano

These are more focused on GDPR/CCPA and website/app consent banners, preference centers, and compliance.

3) If you want a simple self-hosted alternative

You can build your own consent flow using:

• Firebase / Supabase / Postgres for storing consent states
• A custom preference center UI
• Push providers like FCM, APNs, or Web Push
• Server-side rules to only send messages to opted-in users

This is usually best if you want full control and lower vendor lock-in.

Quick recommendation

• For marketing automation: Braze, Airship, CleverTap, MoEngage
• For privacy/cookie consent: OneTrust, Cookiebot, Didomi, Usercentrics
• For DIY/self-hosted: FCM + custom consent storage

If you tell me:

1. web or mobile,
2. push notifications or cookie/privacy consent, and
3. your budget / self-hosted preference,

I can narrow it to the best 2–3 options.