Sinatra
A lightweight Ruby web framework for building web applications with minimal setup
- Also known as
- sinatra
What is Sinatra?
Sinatra is a minimal web framework for Ruby that enables developers to build web applications quickly using HTTP routes, templates, and Rack middleware. It supports both modular and classic application styles with an unopinionated, blank-slate approach.
What Sinatra does
The capabilities that matter for backend frameworks, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Language runtime
- Ruby
- Architecture style
- Minimalist
- Async model
- -
- Orm included
- -
- Templating included
- ✓
- Dependency injection
- -
- CLI scaffolding
- -
- Openapi autogen
- -
- Websocket support
- -
- Background jobs included
- -
- Testing framework included
- ✓
- API first
- ✓
- Admin UI generated
- -
- License type
- -
Platform & deployment
Independently observed- Web
Security & compliance
Known vulnerabilities: 6 (0 in the last 12 months), max severity HIGH sourcea count reflects scale & disclosure, not quality
Sinatra alternatives
Other backend frameworks we track, ranked by the same independent score.
Compare Sinatra
Side by side against other backend frameworks, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Sinatra, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Dependent projects | 86 | 0.08 | 6.9 | ✓ |
| Capabilities | 58 | 0.08 | 4.8 | ✓ |
| Security score | 63 | 0.05 | 3.3 | ✓ |
| Stars | 77 | 0.03 | 2.5 | ✓ |
| Integrations | 0 | 0.05 | 0.0 | - |
| Development activity | 0 | 0.12 | 0.0 | ✓ |
| Release cadence | 0 | 0.07 | 0.0 | - |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 0 | mediumsource · 2026-10-12 · 65% |
Adoption
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Api first: Yes · Language runtime: Ruby · Architecture style: minimalist · Templating included: Yes · Testing framework included: Yes | mediumsource · 2026-10-12 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Ruby | highsource · 2026-10-12 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-10-12 · 95% |
Security
Is Sinatra the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Sinatra against the rest of the backend frameworks we index, using the same dated evidence weighted your way.
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