Side by side
Assembly vs B12
Both stand on legal client portal software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIMacWeb+1
Assembly combines request intake, work tracking, and file sharing, with options for custom domains and single sign-on. A free plan is available, and paid plans start at $29/mo (annual).
Visit Assembly
Free plan APISelf-hostedWeb
B12 combines website creation with publishing, client-management and commerce functions. Review the plan pricing and payment availability for your location before choosing it.
Visit B12The facts
| Assembly | B12 | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | No |
| Runs on | API, Mac, Web, Windows | API, Self-hosted, Web |
| Lowest paid plan | Starter: $29 a month | Website: $24 a month |
| Plans published | 5 | 3 |
| Maker | Not published | Not published |
| Website | assembly.com | b12.io |
| On legal client portal software | #1 of 42 | #2 of 42 |
Assembly: what it does well
- Free plan available
- Request intake, work tracking, and file sharing
- Supports up to 50 client users
- Custom domain and single sign-on
- Available on web, Windows, and macOS
What to know first
- Paid plans start at $29/mo (annual)
B12: what it does well
- Builds websites, stores, blogs, web apps and internal tools.
- Includes SEO structure and built-in analytics.
- Works on desktop, mobile and tablet without installation.
- Free plan and 7-day trial available.
What to know first
- Paid plans start at $24/mo.
- B12 Commerce is available only in the United States.
- AI prompt data may be retained up to 30 days; Fal.ai retains it until B12 deletes it.