switchpoint

Authentication · marketing agencies · 2026

Best authentication
for agencies

Agencies juggle many clients, fast handoffs, and white-label needs — tools have to scale per seat and per workspace without choking on permissions.

Top pick

Auth0

The incumbent enterprise identity platform — broadest feature set and integrations.

Picked for agencies because it integrates with the rest of your stack and scales as the team grows.

Try Auth0

The full shortlist

All 5 picks

  1. 1

    Auth0

    The incumbent enterprise identity platform — broadest feature set and integrations.

    Free up to 25k MAU. B2B Essentials from $150/mo.

    Picked for agencies because it integrates with the rest of your stack and scales as the team grows.

    Pros

    • Enterprise-grade compliance (SOC 2, HIPAA, FedRAMP)
    • Mature SDK ecosystem
    • Strong support tiers

    Trade-offs

    • Pricing climbs fast past free tier
    • Heavier to integrate than Clerk
    Visit Auth0
  2. 2

    Supabase Auth

    Open-source auth tied into a Postgres-backed BaaS — full data ownership.

    Free up to 50k MAU. Pro $25/mo + $0.00325/MAU above.

    Picked for agencies because it integrates with the rest of your stack and scales as the team grows.

    Pros

    • Open source and self-hostable
    • Tight Postgres + RLS integration
    • Generous free tier

    Trade-offs

    • Org/team primitives are DIY
    • Enterprise SSO is paid add-on
    Visit Supabase Auth
  3. 3

    WorkOS

    Enterprise-ready auth purpose-built for B2B SaaS — SSO, SCIM, and directory sync as first-class primitives.

    Free up to 1M MAU on AuthKit. SSO + Directory Sync priced per connection.

    Picked for agencies because it scales as the team grows.

    Pros

    • SSO/SCIM are first-class, not upsells
    • Predictable per-connection pricing
    • Excellent enterprise support and SLAs

    Trade-offs

    • UI components less polished than Clerk's
    • Best fit is B2B — less optimized for B2C funnels
    Visit WorkOS
  4. 4

    Keycloak

    Battle-tested open-source IAM you run yourself — no MAU costs, full data residency.

    Free, open source. Hosting and ops are on you.

    Picked for agencies because it scales as the team grows.

    Pros

    • Zero per-user cost
    • Full data ownership and residency control
    • Mature enterprise feature set (SSO, SCIM, federation)

    Trade-offs

    • You operate it — upgrades, scaling, security
    • Steeper learning curve than hosted SaaS
    Visit Keycloak
  5. 5

    Stytch

    Developer-first auth with strong B2B org/role primitives and passwordless flows.

    Free up to 10k MAU. B2B from $249/mo.

    Picked for agencies because it a solid fit for agencies.

    Pros

    • B2B-native org and RBAC primitives
    • Excellent docs and DX
    • Flexible UI — headless or pre-built

    Trade-offs

    • Smaller community than Clerk/Auth0
    • Pricing steps up at the B2B tier
    Visit Stytch

Questions

FAQ

What's the best authentication for agencies?

Auth0. Picked for agencies because it integrates with the rest of your stack and scales as the team grows.

Is there a free option?

Yes — several picks have free tiers. Start with Auth0.

How was this list ranked?

We re-rank each category against the buying criteria of marketing agencies: pricing, integrations, simplicity, and privacy. No 50-tool listicles. No fake winners.