Head-to-Head Comparison · Alternative to OneTrust · 🤖 automation
OneTrust vs c15t
Open source consent management framework for modern web apps. Framework-agnostic, fully customizable, and performance-first with no vendor lock-in. Here is how c15t ($0/mo open source) stacks up against OneTrust ($15/mo) across cost, hosting, data privacy, and real-world trade-offs.
c15t is a verified Open Source-licensed open-source replacement for OneTrust. Switching from OneTrust ($15/mo) saves $180/yr per solo seat, or $900/yr for a 5-person team. Deployment: Runs on Self-host.
The catch: Requires self-hosting setup, updates, and server maintenance compared to managed OneTrust.
OneTrust vs c15t Specifications
facts verified 2026-11-07
| Dimension | OneTrust (Paid) | c15t (Replacement) |
|---|---|---|
| Monthly Price | $15 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $180 / yr | $0 / yr (Save $180) |
| 1-Year Cost (5 seats) | $900 / yr | $0 / yr (Save $900) |
| 1-Year Cost (10 seats) | $1,800 / yr | $0 / yr (Save $1,800) |
| Source & License | Proprietary SaaS | open source Open Source |
| Where It Runs | Vendor Cloud | Self-host (your server) |
| Platforms | Web / Cloud | webself-hosteddocker to self-host |
| GitHub Stars | — | ★ 2k (active nov 2026) |
Deep Dive: Switching from OneTrust to c15t
Trade-offs, installation & data architecture
What you trade away
Requires self-hosting setup, updates, and server maintenance compared to managed OneTrust.
How to deploy c15t
Clone https://github.com/c15t/c15t or deploy with Docker Compose
What it takes to run
Deploy via Docker or binary release from GitHub and configure environment variables.
Where your data lives
All application data and configuration live on your own server or local database.
Why fork c15t instead of vibe-coding a OneTrust clone?
Instead of paying recurring SaaS fees for OneTrust or rebuilding it from scratch, deploy one of the 1 battle-tested open-source alternatives like c15t.
OneTrust vs c15t FAQ
Is c15t a good free alternative to OneTrust?+
Yes. c15t is a verified open-source (Open Source) replacement for OneTrust. Open source consent management framework for modern web apps. Framework-agnostic, fully customizable, and performance-first with no vendor lock-in.
What is the catch when switching from OneTrust to c15t?+
Requires self-hosting setup, updates, and server maintenance compared to managed OneTrust.
How much do you save switching from OneTrust to c15t?+
OneTrust costs $15/mo ($180/yr) per seat, whereas c15t is $0/mo. Switching saves $180/yr for a solo user, $900/yr for a 5-person team, and $1,800/yr for a 10-person team.
How do I install or self-host c15t instead of OneTrust?+
Install: Clone https://github.com/c15t/c15t or deploy with Docker Compose. Setup: Deploy via Docker or binary release from GitHub and configure environment variables.
