# Memfault vs Zephyr RTOS

| Attribute | Memfault | Zephyr RTOS |
|---|---|---|
| **Vioscale score** | 56 (43% (low)) | 52.8 (40% (low)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 0 |
| adoption.github_stars | - | 16,315 |
| deployment.options | `{"cloud":true}` | `{"self_hosted":true}` |
| description.long | Memfault enables hardware teams to monitor deployed device performance in real-time and fix issues before customers are affected. The platform automatically collects diagnostic data from embedded devices, prioritizes high-impact problems, and provides tools for managing firmware updates at scale. | Zephyr is a real-time operating system optimized for resource-constrained embedded devices, ranging from simple sensors to sophisticated IoT devices and gateways. It provides a small-footprint kernel supporting multiple processor architectures and is built with security and long-product-lifecycle support as core design principles. |
| features.capabilities | - | `{"open_source":true,"target_class":"both"}` |
| integrations.count | 6 | 1 |
| integrations.list | `[{"name":"1NCE"},{"name":"Jira"},{"name":"Golioth"},{"name":"Texas Instruments"},{"name":"Google"},{"name":"NXP"}]` | `[{"name":"PlatformIO"}]` |
| language.primary | - | C |
| license.spdx | - | Apache-2.0 |
| market.availability | `{"hqCountry":"US","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | - |
| pricing | `{"type":"subscription","plans":[{"free":true,"name":"Developer","summary":"Free for up to 10 development devices, then pay-as-you-go","features":["1,000 reporting devices","2 monitored chips per device","2 product architectures","20 users","Standard user roles","Google SSO","10 metrics","20 custom metric charts","Staged rollouts","Delta updates","Log collection","OTA update management"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Free tier for teams building on Nordic low-power wireless solutions","contactSales":false,"includedLimits":{"development_devices":"10"}},{"free":false,"name":"Growth","summary":"$3,495/month. 30-day data retention with core features.","features":["1,000 reporting devices","2 monitored chips per device","2 product architectures","10 users","Standard user roles","Google SSO","10 metrics","20 custom metric charts","Staged rollouts","Delta updates","Log collection","OTA update management","Standard support","Jira integration"],"minSeats":10,"components":[{"kind":"fixed","amount":3495,"period":"month","currency":"USD"}],"description":"For teams growing their device fleet with basic observability features","contactSales":true,"includedLimits":{"chip_integrations":"2","reporting_devices":"1,000","data_retention_days":"30","device_architectures":"1"}},{"free":false,"name":"Scale","summary":"$6,695/month. Advanced features for multiple product lines.","features":["Everything in Growth","45 days data retention","2 chip integrations","2 device architectures","25 users","Advanced user roles","SAML SSO","20 metrics","Unlimited metric charts","50 device attributes","Accelerated update delivery","Priority support","Cloud service SLA"],"minSeats":25,"components":[{"kind":"fixed","amount":6695,"period":"month","currency":"USD"}],"description":"For teams operating multiple product lines at scale","contactSales":false,"includedLimits":{"chip_integrations":"2","reporting_devices":"1,000","data_retention_days":"45","device_architectures":"2"}},{"free":false,"name":"Enterprise","summary":"Custom pricing. Full platform access with dedicated support.","features":["Everything in Scale","60 days data retention","Uncapped chip integrations","Uncapped product architectures","50 users","Advanced permissions","50 metrics","Unlimited custom alerts","Unlimited cohorts","150 device attributes","Enterprise SLA","Dedicated Slack support"],"minSeats":50,"description":"For large organizations deploying across all product lines with custom requirements","contactSales":true,"includedLimits":{"data_retention_days":"60"}}],"summary":"From $3,495/month. Free developer tier for up to 10 development devices.","currency":"USD","freeTier":true,"sourceUrl":"https://memfault.com/pricing/","retrievedAt":"2026-08-20T12:18:03.942Z","startingPrice":{"amount":6695,"period":"month","currency":"USD"},"billingPeriods":["month"]}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://zephyrproject.org","retrievedAt":"2026-08-21T13:40:59.448Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | commercial |
| pricing.price_level | high | free |
| pricing.starting_price | `{"amount":6695,"currency":"USD"}` | - |
| pricing.transparent | yes | yes |
| release.cadence_days | - | 6 |
| release.history | - | `[{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.4.2","date":"2026-08-07T15:36:32Z","type":"stable","version":"v4.4.2"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v3.7.3-rc1","date":"2026-08-06T00:38:42Z","type":"prerelease","version":"v3.7.3-rc1"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.4.2-rc1","date":"2026-07-29T20:54:38Z","type":"prerelease","version":"v4.4.2-rc1"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.3.1","date":"2026-06-23T12:27:28Z","type":"stable","version":"v4.3.1"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.3.1-rc1","date":"2026-06-13T07:08:30Z","type":"prerelease","version":"v4.3.1-rc1"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.4.1","date":"2026-06-10T18:06:45Z","type":"stable","version":"v4.4.1"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.4.1-rc1","date":"2026-06-03T21:23:41Z","type":"prerelease","version":"v4.4.1-rc1"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.4.0","date":"2026-04-14T21:33:16Z","type":"stable","version":"v4.4.0"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.4.0-rc3","date":"2026-04-08T20:33:53Z","type":"prerelease","version":"v4.4.0-rc3"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.4.0-rc2","date":"2026-04-02T21:06:28Z","type":"prerelease","version":"v4.4.0-rc2"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v3.7.2","date":"2026-03-31T19:09:36Z","type":"stable","version":"v3.7.2"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.4.0-rc1","date":"2026-03-24T23:16:10Z","type":"prerelease","version":"v4.4.0-rc1"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.2.2","date":"2026-03-23T16:05:02Z","type":"stable","version":"v4.2.2"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v3.7.2-rc2","date":"2026-03-14T12:19:10Z","type":"prerelease","version":"v3.7.2-rc2"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.3.0","date":"2025-11-13T19:56:12Z","type":"stable","version":"v4.3.0"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.3.0-rc3","date":"2025-11-08T14:43:55Z","type":"prerelease","version":"v4.3.0-rc3"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.3.0-rc2","date":"2025-11-01T14:49:19Z","type":"prerelease","version":"v4.3.0-rc2"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.3.0-rc1","date":"2025-10-25T14:38:11Z","type":"prerelease","version":"v4.3.0-rc1"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.2.1","date":"2025-10-07T22:55:23Z","type":"stable","version":"v4.2.1"},{"url":"https://github.com/zephyrproject-rtos/zephyr/releases/tag/v4.2.0","date":"2025-07-19T01:11:16Z","type":"stable","version":"v4.2.0"}]` |
| security.gdpr | yes | - |
| security.scorecard | - | 7.1 |
| security.soc2 | yes | - |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fzephyrproject-RTOS%2Fzephyr&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Embedded IOT Dev)

| Capability | Memfault | Zephyr RTOS |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Target class | - | Both |
| Rtos type | - | - |
| Low power support | - | - |
| Tls dtls stack | - | - |
| Ota updates | - | - |
| Device management console | - | - |
| Device provisioning | - | - |
| Open source | - | ✓ |
| PSA certified | - | - |
| Rust support | - | - |

*Source: Vioscale. Generated 2026-09-01T15:16:32.658Z. "-" = undocumented, not absent.*