About
Metalama is an open-source patterns and architecture toolkit for C# built on Roslyn. It lets developers define aspects and project fabrics in C# so the compiler can generate repetitive code at build time and report architecture violations in the IDE as code is written.
The product includes open-source packages under MIT, plus commercial editions that add Visual Studio tooling, architecture validation, code fix tooling, distributed caching packages, and support options. The free offering is perpetual and includes the open-source packages; the pricing page also notes that only the latest YYYY.N version is maintained under the MIT license.
- Open-source MIT-licensed packages
- Compile-time code generation and weaving
- Real-time architecture validation
- Roslyn-based C# tooling
- Latest YYYY.N version maintenance
Free Tier Value
This free tier is perpetual and has no usage cap, so it is worth roughly the same as the cheapest paid plan’s monthly seat price for a buyer who only needs the open-source edition. The main value comes from the MIT-licensed core and the included community tooling, while the paid plans mainly add closed-source productivity features, support, and enterprise extras.
What's included in the free tier
- Everything in Metalama Open Source.
- Visual Studio Tools for Metalama: T# syntax highlighting, CodeLens, Aspect Explorer, and Aspect Diff.
- All open-source packages.
- Support through public discussions and the issue tracker on GitHub.
- Only the latest YYYY.N version is maintained under the MIT license; previous YYYY.(N-1) versions are no longer maintained under the MIT license.
See Metalama pricing for current limits.
Paid plans
Metalama Professional
- user
- 1
- support_sla
- 5 business days
- money_back_guarantee
- 45 days
- support_updates_included
- 1 year
- Everything in Metalama Community.
- Architecture validation toolkit.
- Code fix toolkit.
- Distributed caching packages.
- Extended Support builds.
- Perpetual license to any eligible build; active subscription only needed for updates.
- Includes 1 year of support and updates.
- Build servers are free.
Metalama Enterprise
- users
- 10
- support_sla
- 1 or 2 business days
- Everything in Metalama Professional.
- Support SLA: 1 or 2 business days.
- Full source code access.
- Long-term support builds.
- Security, GDPR and vendor forms.
- Private Slack or Teams channel, and video calls.
- Skip-the-line bug fix releases.
- Advisory calls and a regression shield.
Pricing extracted from Metalama's pricing page. Always verify current pricing before committing.