What is rand?
Extended documentation for Rust's random number library, including quick start, crates overview, users' guide, and contributor guidelines.
rand pricing
We don't have rand's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
Free, open-source Rust library
rand FAQ
Common questions about rand, answered from independent, dated evidence.
What is rand?
Rand is a random number generation library for the Rust programming language. It provides random number generators and related randomness functionality, supported by comprehensive documentation and API reference materials.
What does rand cost?
Rand is an open source project available free of charge. There are no licensing fees, subscriptions, or usage-based costs.
What programming language does rand support?
Rand is designed specifically for Rust developers. It provides native Rust capabilities for integrating random number generation into Rust applications.
Where can I find documentation and API reference?
Rand includes extensive documentation and an API reference available through its official website. These resources explain how to implement random number generation in Rust projects.
Is rand open source?
Yes, rand is an open source project released free of charge. Review the project's license terms for details on permitted uses.
Who should use rand?
Rand is intended for Rust developers who need to incorporate random number generation into their applications. It provides core randomness functionality for various types of Rust projects.
rand alternatives
Other utilities we track, ranked by the same independent score.
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 rand, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Release Cadence | 98 | 0.08 | 7.6 | ✓ |
| Github Activity | 30 | 0.14 | 4.1 | ✓ |
| Github Stars | 63 | 0.04 | 2.4 | ✓ |
| Capabilities | 0 | 0.12 | 0.0 | - |
| Integrations | 0 | 0.06 | 0.0 | - |
| Security Posture | 0 | 0.10 | 0.0 | - |
| Package Downloads | 0 | 0.20 | 0.0 | - |
| Stackoverflow Activity | 0 | 0.09 | 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 | 8 | mediumsource · 2026-07-30 · 65% |
Adoption
| Attribute | Value | Evidence |
|---|---|---|
| Github stars | 2,061 | highsource · 2026-07-30 · 90% |
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | [{"answer":"Rand is a random number generation library for the Rust programming language. It provides random number generators and related randomness functionality, supported by comprehensive documentation and API reference materials.","source":"https://rust-random.github.io/book","question":"What is rand?","confidence":0.95},{"answer":"Rand is an open source project available free of charge. There are no licensing fees, subscriptions, or usage-based costs.","source":"https://rust-random.github.io/book","question":"What does rand cost?","confidence":0.95},{"answer":"Rand is designed specifically for Rust developers. It provides native Rust capabilities for integrating random number generation into Rust applications.","source":"https://rust-random.github.io/book","question":"What programming language does rand support?","confidence":0.95},{"answer":"Rand includes extensive documentation and an API reference available through its official website. These resources explain how to implement random number generation in Rust projects.","source":"https://rust-random.github.io/book","question":"Where can I find documentation and API reference?","confidence":0.9},{"answer":"Yes, rand is an open source project released free of charge. Review the project's license terms for details on permitted uses.","source":"https://rust-random.github.io/book","question":"Is rand open source?","confidence":0.85},{"answer":"Rand is intended for Rust developers who need to incorporate random number generation into their applications. It provides core randomness functionality for various types of Rust projects.","source":"https://rust-random.github.io/book","question":"Who should use rand?","confidence":0.85}] | highsource · 2026-07-30 · 91% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Rust | highsource · 2026-07-30 · 90% |
Pricing
Release
| Attribute | Value | Evidence |
|---|---|---|
| Cadence days | 3 | mediumsource · 2026-07-30 · 70% |
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Status page | Yes | mediumsource · 2026-08-05 · 60% |