Available worldwide
What is Unbound?
A free DNS resolver software that encrypts user queries and validates domain lookups. Designed for privacy and performance, it supports modern encrypted DNS protocols and works across Linux, BSD, and macOS systems.
Unbound pricing
We don't have Unbound'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
- On-premise
- Self-hosted
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Unbound alternatives
Other dns management we track, ranked by the same independent score.
- AWS Route 53Cloud-based DNS and domain management with intelligent traffic routinglow · 29%
- CoreDNSlow · 28%
- Cloudflare DNSAn ultra-fast, reliable domain name service available at no costmedium · 62%
- Technitium DNS Serverlow · 8%
- IBM NS1 ConnectA DNS management service that intelligently routes traffic in real-time with a 100% service level agreementlow · 33%
- Google Cloud DNSDNS management and resolution across Google's global network with high availability and low latencylow · 26%
Compare Unbound
Side by side against other dns management, 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 Unbound, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Development activity | 61 | 0.09 | 5.7 | ✓ |
| Release cadence | 71 | 0.05 | 3.7 | ✓ |
| Stars | 70 | 0.03 | 1.8 | ✓ |
| Capabilities | 0 | 0.08 | 0.0 | - |
| Integrations | 0 | 0.07 | 0.0 | - |
| Dependent projects | 0 | 0.06 | 0.0 | ✓ |
| Security posture | 5 | 0.07 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Security score | 0 | 0.04 | 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 | 84 | mediumsource · 2026-08-18 · 65% |
Adoption
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | C | highsource · 2026-08-26 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | BSD-3-Clause | highsource · 2026-08-26 · 95% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | HqCountry: NL · PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-08-20 · 75% |