# Nextcloud vs Unison

| Attribute | Nextcloud | Unison |
|---|---|---|
| **vioscaleAI score** | 42.8 (21% (low)) | 37.9 (59% (medium)) |
| activity.commits_last_30d | - | 5 |
| adoption.dependent_repos | - | 0 |
| adoption.github_stars | - | 5,528 |
| content.faq | `[{"answer":"Nextcloud is a free, open-source content collaboration platform that lets you store and manage files, calendars, contacts, and communications on your own servers. It includes desktop, mobile, and web clients with built-in document editing, messaging, and video calling capabilities. It is indexed under File Sync.","source":"https://nextcloud.com","question":"What is Nextcloud?","confidence":0.6},{"answer":"Nextcloud is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://nextcloud.com","question":"Is Nextcloud free to use?","confidence":0.6},{"answer":"Nextcloud supports the web, iOS and Android. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://nextcloud.com","question":"What platforms does Nextcloud support?","confidence":0.6},{"answer":"Yes. Nextcloud can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://nextcloud.com","question":"Can Nextcloud be self-hosted?","confidence":0.6},{"answer":"We have confirmed 10 integrations for Nextcloud, including Collabora Online, XMPP, LibreOffice, Signal, Telegram, SMS, OTR and OMEMO, plus 2 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://nextcloud.com","question":"What does Nextcloud integrate with?","confidence":0.6},{"answer":"We have independently confirmed HIPAA and GDPR for Nextcloud. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Nextcloud not holding them. Always confirm compliance directly before you rely on it.","source":"https://nextcloud.com/blog/nextcloud-14-now-available-with-video-verification-signaltelegram-2fa-support-improved-collaboration-and-gdpr-compliance/","question":"What security certifications does Nextcloud have?","confidence":0.7}]` | `[{"answer":"Unison is an open-source utility that maintains two replicas of files and directories across separate hosts or storage devices, automatically propagating non-conflicting changes while detecting conflicting updates. It works over internet connections including slow links, and allows offline access to already-synchronized data. It is indexed under File Sync.","source":"https://github.com/pricing","question":"What is Unison?","confidence":0.6},{"answer":"Unison offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://github.com/pricing","question":"Is Unison free?","confidence":0.6},{"answer":"Unison supports Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://github.com/pricing","question":"What platforms does Unison support?","confidence":0.6},{"answer":"Yes. Unison can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://github.com/pricing","question":"Can Unison be self-hosted?","confidence":0.6},{"answer":"Yes. Unison is published under the GPL-3.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/bcpierce00/unison","question":"Is Unison open source?","confidence":0.95}]` |
| deployment.options | `{"cloud":true,"on_prem":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | Open source content collaboration platform with file storage, document editing, chat, and task management. Designed for organizations wanting to maintain control over their data with self-hosted deployment options. | Unison maintains multiple copies of files and directories on different hosts or disks, automatically propagating non-conflicting changes between replicas. It detects conflicting updates, works offline after synchronization, and runs as a user-level program without requiring kernel modifications or elevated privileges. |
| features.capabilities | `{"pricing_model":"free_open_source","deployment_model":"self_hosted","active_directory_ldap_identity_sync":true,"self_hosted_linux_docker_deployment":true,"client_server_architecture_cloud_host":true}` | `{"pricing_model":"free_open_source","deployment_model":"self_hosted","peer_to_peer_p2p_network_routing":true,"self_hosted_linux_docker_deployment":true,"block_level_delta_sync_transfer_speed":true,"client_server_architecture_cloud_host":false,"version_history_and_conflict_resolution":true}` |
| integrations.count | 7 | - |
| integrations.list | `[{"name":"Collabora Online"},{"name":"XMPP"},{"name":"LibreOffice"},{"name":"Signal"},{"name":"Telegram"},{"name":"SMS"},{"name":"OTR"},{"name":"OMEMO"},{"name":"Vereign","native":true,"category":"security"},{"name":"Cospend","native":true,"category":"finance"},{"name":"Talk","native":true,"category":"chat","direction":"bidirectional"},{"name":"Mail","native":true,"direction":"bidirectional"},{"name":"Calendar","native":true,"direction":"bidirectional"},{"name":"Recognize","native":true,"direction":"bidirectional"},{"name":"Collectives","native":true,"direction":"bidirectional"},{"name":"privacyIDEA","native":false,"direction":"inbound"}]` | - |
| language.primary | - | OCaml |
| license.spdx | - | GPL-3.0 |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"ios":true,"web":true,"linux":true,"android":true}` | `{"cli":true,"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://nextcloud.com","retrievedAt":"2026-09-05T16:06:54.119Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://github.com/pricing","retrievedAt":"2026-10-14T11:28:28.015Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | - | 132 |
| release.history | - | `[{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.54.0","date":"2026-05-01T00:33:56Z","type":"stable","version":"v2.54.0"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.53.8","date":"2025-11-05T00:07:47Z","type":"stable","version":"v2.53.8"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.53.7","date":"2024-11-05T13:41:24Z","type":"stable","version":"v2.53.7"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.53.6","date":"2024-11-05T00:44:16Z","type":"stable","version":"v2.53.6"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.53.5","date":"2024-05-07T01:32:03Z","type":"stable","version":"v2.53.5"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.53.4","date":"2024-02-19T17:52:38Z","type":"stable","version":"v2.53.4"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.53.3","date":"2023-04-28T00:28:36Z","type":"stable","version":"v2.53.3"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.53.2","date":"2023-03-20T17:39:53Z","type":"stable","version":"v2.53.2"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.53.1","date":"2023-03-19T12:42:03Z","type":"stable","version":"v2.53.1"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.53.0","date":"2022-11-07T11:34:26Z","type":"stable","version":"v2.53.0"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.52.1","date":"2022-05-08T12:26:58Z","type":"stable","version":"v2.52.1"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.52.0","date":"2022-03-12T19:12:50Z","type":"stable","version":"v2.52.0"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.51.5","date":"2021-12-18T15:51:34Z","type":"stable","version":"v2.51.5"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.51.4","date":"2021-06-24T14:50:25Z","type":"stable","version":"v2.51.4"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.51.3","date":"2020-10-21T13:15:46Z","type":"stable","version":"v2.51.3"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.51.2","date":"2018-01-27T21:19:26Z","type":"stable","version":"v2.51.2"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.48.15v4","date":"2017-12-18T12:25:51Z","type":"stable","version":"v2.48.15v4"},{"url":"https://github.com/bcpierce00/unison/releases/tag/v2.51.0","date":"2017-11-24T21:50:05Z","type":"stable","version":"v2.51.0"},{"url":"https://github.com/bcpierce00/unison/releases/tag/2.48.4","date":"2016-09-29T12:39:45Z","type":"stable","version":"2.48.4"},{"url":"https://github.com/bcpierce00/unison/releases/tag/2.48.3","date":"2016-09-29T12:37:20Z","type":"stable","version":"2.48.3"}]` |
| security.certifications | `[{"name":"ANSSI CSPN","status":"active"},{"name":"BSI IT-Grundschutz","status":"active"},{"name":"Data Protection Impact Assessment (DPIA)","status":"active"}]` | - |
| security.gdpr | yes | - |
| security.hipaa | yes | - |
| security.scorecard | - | 4.7 |
| security.trust_center | https://nextcloud.com/blog/nextcloud-validates-license-compliance-through-openchain/ | https://github.com/security |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=openbsd&package_name=net%2Funison%2C-gui&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (File Sync)

| Capability | Nextcloud | Unison |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Deployment model | Self hosted | Self hosted |
| Peer to peer p2p network routing | - | ✓ |
| Client server architecture cloud host | ✓ | ✗ |
| Block level delta sync transfer speed | - | ✓ |
| Self hosted linux docker deployment | ✓ | ✓ |
| Synology qnap nas hardware integration | - | - |
| Aws s3 azure blob external mounts | - | - |
| Active directory ldap identity sync | ✓ | - |
| Version history and conflict resolution | - | ✓ |
| End to end encryption keys in transit | - | - |
| SOC2 type ii | - | - |
| ISO 27001 | - | - |
| Pricing model | Free open source | Free open source |

*Source: vioscaleAI. Generated 2026-10-16T20:06:38.537Z. "-" = undocumented, not absent.*