What is CLI11?
CLI11 is a C++ library for building command-line tools. It offers an intuitive API for defining command options, subcommands, and configuration files with no external dependencies beyond C++11, and is tested across Linux, macOS, and Windows.
CLI11 pricing
We don't have CLI11's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
Platform & deployment
Independently observed- CLI
- macOS
- Linux
- Windows
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
CLI11 alternatives
Other cli frameworks we track, ranked by the same independent score.
Compare CLI11
Side by side against other cli frameworks, attribute by attribute, with a source on every value.
The Vioscale 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 CLI11, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Price level | 100 | 0.05 | 5.2 | ✓ |
| Development activity | 52 | 0.09 | 4.9 | ✓ |
| Release cadence | 52 | 0.05 | 2.7 | ✓ |
| Stars | 69 | 0.03 | 1.8 | ✓ |
| Dependent projects | 5 | 0.06 | 0.3 | ✓ |
| Reliability | 0 | 0.07 | 0.0 | - |
| Capabilities | 0 | 0.08 | 0.0 | - |
| Integrations | 0 | 0.09 | 0.0 | - |
| Security posture | 0 | 0.07 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Security score | 0 | 0.04 | 0.0 | - |
| Pricing transparency | 0 | 0.08 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 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 | 45 | mediumsource · 2026-08-26 · 65% |
Adoption
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | C++ | highsource · 2026-08-26 · 90% |
Pricing
Release
Security
| Attribute | Value | Evidence |
|---|---|---|
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=cli11&per_page=100 · Last 12m: 0 | highsource · 2026-08-26 · 90% |