whats-best.ai

Business Instant Messaging

Brosix

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Panel rating · 6 judges · How to read the stars

Category median

Sovereignty: not determined

0–5 in half steps. 5 means the rubric's top anchor is met on the evidence.

by Brosix · brosix.com

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Brosix: AI-assisted analysis on whats-best.ai Brosix: AI-assisted analysis on whats-best.ai (dark)

Add ?theme=dark to the image address for dark backgrounds. The badge shows the category and the month of the latest evaluation, and EU-Made where that is the product’s provenance. It never shows a score.

Brosix at a glance

Vendor
Brosix
Headquarters
Not stated on the vendor’s pages as of 13 Oct 2026
Data hosting
Not stated on the vendor’s pages as of 13 Oct 2026
Free plan
Not stated on the vendor’s pages as of 13 Oct 2026
Panel verdict
The AI panel rates Brosix 1.5/5, the mean of 6 judges. Brosix, a hosted instant messaging service, scored highest on encryption and access, 4 to 6: AES-256 is stated for chat, voice, file and video, devices are verified, clients are signed, and the vendor states it never analyzes, scans or accesses stored data. how scores are made
As of
Vendor pages captured 13 Oct 2026; evaluated by the panel 15 Oct 2026. all sources

Brosix alternatives, European ones first →

Read this page as one judge. Each weighs the same scores by what they care about.

The Platform Engineer

Weighted verdict

Would rather run it than rent it, and wants to know whether that is a supported deployment or a hobby build. Cares about open protocols, federation, a plugin system with real permissions, and an upgrade path that does not orphan the customisations.

Same scores as the panel view — this lens weights them the way this judge cares.

Scored by The Platform Engineer

Panel median The Platform Engineer This judge’s scores over the panel median. Each label opens its reasoning below.
Scores per criterion, in stars out of 5
Criterion Panel median The Platform Engineer
Channels, threads & search 1 of 5 1 of 5
Encryption & access control 3 of 5 3 of 5
Retention, discovery & co-determination 2 of 5 2 of 5
Deployment & data custody 0.5 of 5 0.5 of 5
Integrations & extensibility 2 of 5 2 of 5
European sovereignty 1.5 of 5 1.5 of 5
Pricing transparency 0 of 5 0 of 5

Channels, threads & search

How this is scored

The daily surface: channel model, threading, mentions, files, and whether search can find a decision made eighteen months ago.

0 — Flat group chats with no threads; search covers recent messages only, and history is capped.

3 — Channels and direct messages with basic search, but threading is awkward or absent and file handling is a plain attachment list.

5 — Public and private channels, real threads, mentions and reactions, file sharing with previews, and full-text search across the whole history.

8 — Cross-organisation or guest channels with clear boundaries, message editing history, pinned and saved items, search with filters by channel, person and date, and a documented history limit or none at all.

10 — The archive is a working knowledge base: search that ranks well across years, threads that stay readable, channel lifecycle management (archive, rename, merge) without losing history, and export of a conversation in a form a human can read.

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The Platform Engineer

The documented model is peer chats plus renameable group chat rooms that any user can create, with offline members receiving messages on next login, and history browsed per contact via a View History button alongside a team-wide compliance archive. I found no public information on threading, mentions, reactions, file previews or workspace-wide search with filters, so an eighteen-month-old decision is not reliably findable from what is published. 4 5 6

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Encryption & access control

How this is scored

What is encrypted and against whom, plus who can reach which room. Judged on documented mechanism, since "encrypted" in this category usually means the vendor holds the keys.

0 — Transport encryption only, undocumented; no role model beyond admin, guests indistinguishable from members.

3 — TLS and encryption at rest with vendor-held keys, basic roles, and guest access that mostly works.

5 — The above plus configurable roles per channel, SSO, guest accounts with scoped visibility, and a clear statement of what the vendor can read.

8 — Optional end-to-end encryption for direct messages or private rooms with the trade-offs named, device verification, session management an admin can revoke, and documented key handling.

10 — End-to-end encryption as a first-class mode — documented or open cryptography, cross-device key management that ordinary users survive, identity verification, and the vendor stating plainly what it cannot decrypt.

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The Platform Engineer

AES-256 is stated across chat, voice, files and video, with end-to-end encryption on direct peer-to-peer channels when a direct connection is possible, device verification, signed clients, and a closed network where only administrator-invited users join. The vendor also states plainly it never accesses messages or files and has no technical ability to impersonate users. What holds it below the top band is that key handling for server-stored history is undocumented and I found no public information on admin-revocable sessions or per-room roles. 6 7 3

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Retention, discovery & co-determination

How this is scored

The archive as a legal object: retention policies, export for discovery, audit, and the monitoring features a works council will ask to have switched off.

0 — No retention policy, no export beyond a manual copy, no audit log, and presence or activity analytics that cannot be disabled.

3 — Manual export of some data and a global history limit, but no per-channel retention, no audit log and no admin control over analytics.

5 — Configurable retention per channel or workspace, admin export in a documented format, an audit log of administrative actions, and status or presence that a user can control.

8 — Legal-hold and eDiscovery export including edits and deletions, retention executed per policy and evidenced, full admin audit trail, and activity analytics switchable off organisation-wide.

10 — Built to pass a works agreement and a subpoena on the same day: granular retention with documented deletion, discovery export a lawyer can use, complete audit, and no individual-level productivity scoring anywhere in the product.

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The Platform Engineer

Retention is genuinely customer-controlled — administrators set data-expiration periods from as little as one day, and a team-wide Chat History Archive exists for compliance. The export story is thin: the terms promise export only 'if export functionality is available', and the documented export covers user contact fields rather than a message archive in a usable format. I found no public information on an administrative audit log, legal hold or eDiscovery export. 6 2 8

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Deployment & data custody

How this is scored

Whether the customer can hold their own archive: self-hosting, private cloud, open source, federation, and what an exit actually looks like.

0 — Cloud-only, proprietary, with export limited to a partial archive.

3 — Cloud-only, but with a documented full export in an open-ish format.

5 — A private-cloud or dedicated-instance option, or a self-hosted edition that lags the cloud significantly; full export documented.

8 — A genuine self-hosted edition close to feature parity, or open-source core with a documented upgrade path, plus complete export including files and metadata.

10 — Custody is the customer's: open-source or source-available server, self-hosting supported as a first-class deployment, open protocol or federation, and a migration path in and out that the vendor documents rather than resists.

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The Platform Engineer

The terms grant a revocable license to the client software 'solely to access the Services', and the only deployment documentation captured is a list of the vendor's own server addresses and firewall rules to reach them — this is a rented service end to end. A 'Corporate Installation' feature is listed with no detail on what it installs or where, and exit rests on a conditional export promise whose documented form is a user contact list. EU datacentres on request are the sole custody lever a customer is shown. 2 9 10 8

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Integrations & extensibility

How this is scored

Bots, webhooks, app framework, identity — whether the chat becomes the place work is noticed, and whether that is buildable without a partner agreement.

0 — No API, no webhooks, no bots.

3 — Incoming webhooks and a handful of native integrations; no bot framework, no documented limits.

5 — Documented REST API, incoming and outgoing webhooks, slash commands, a bot account model, and SSO.

8 — A proper app framework with interactive components, event subscriptions with retries, SCIM provisioning, documented rate limits and a sandbox.

10 — A platform: versioned API with a deprecation policy, an app directory or plugin system with permissions a customer can audit, and integrations the vendor maintains rather than lists.

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The Platform Engineer

There is a real inbound path: a Notifications API with per-channel API keys documented in the Control Panel, roughly thirty vendor-maintained native integrations, and support for Zapier, Make.com and similar automation platforms. But everything documented is notifications flowing in — I found no public information on outgoing webhooks, slash commands, a bot account model, SCIM provisioning, documented rate limits or an API versioning policy. As a notification relay it works; as an app platform it is not evidenced. 11 12

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European sovereignty

How this is scored

Where the archive and its metadata live, who the contracting entity is, which subprocessors touch it. Independently sourced by the sovereignty pipeline; scored here as this buyer weighs it.

0 — Non-EU vendor and contracting entity, hosting unstated or non-EU, subprocessors unnamed.

3 — EU data residency offered for message content while metadata, search indexes or support tooling remain non-EU, or the contracting entity sits outside the EU.

5 — EU hosting as standard and an EU contracting entity, but parts of the chain — notifications, AI features, analytics — are non-EU without an explained safeguard.

8 — EU hosting on named infrastructure, EU contracting entity, full subprocessor list published, any non-EU processing named with its legal basis.

10 — Sovereign end to end and evidenced: vendor, entity, hosting and every subprocessor European, certification published, and a self-hosted option that removes the question.

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The Platform Engineer

EU storage is available on request with named datacentres in Frankfurt and Strasbourg, but the server-location page leads with Washington D.C., Saint Louis and New York as the standing network, so EU residence reads as an accommodation rather than the default. The contracting entity's jurisdiction, ownership and any subprocessors are unknown from the captured pages. The only certification named is SAS 70 Type II, attached to the US datacentres; I found no published certification for the European path. 10 3

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Pricing transparency

How this is scored

Whether a buyer can compute the annual invoice for their headcount — including the retention, compliance and guest features they actually need — from public pages alone.

0 — No public prices at all; every tier is a sales conversation.

3 — A per-user headline exists, but the tier where retention control, SSO or compliance export begins is unstated.

5 — Per-user prices public with billing period stated, but at least one commonly needed capability (unlimited history, SSO, eDiscovery) sits in an unpriced enterprise tier.

8 — Every tier priced publicly with per-user maths, history and storage limits, feature boundaries, minimum term and VAT treatment stated; self-hosted licensing priced too where offered.

10 — Complete price computability: annual invoice derivable for a given headcount and deployment choice, including guest users, storage and any per-instance licence.

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The Platform Engineer

We found no public pricing information on any captured page — no per-user figure, tier, billing period, storage limit or self-hosted licence price. A buyer cannot begin to compute an annual invoice for their headcount from what is published, which is the weakest state this criterion describes. 1

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European sovereignty — proven facts

0 of 4 dimensions proven

Built only from facts shown on the vendor's own pages. A dimension we could not prove is left open, not scored as zero.

Ownership Not determined — uncited Report an error
Data residency Not determined ⚠ unverified — uncited Report an error
Subprocessors Not determined — uncited Report an error

Questions about Brosix

Is Brosix European?

Not determined: the vendor’s pages as captured do not say where Brosix is based.

Where does Brosix store data?

Not stated on the vendor’s pages as of 13 Oct 2026.

Does Brosix have a free plan?

Not stated on the vendor’s pages as of 13 Oct 2026.

What are the best alternatives to Brosix?

As of 21 Oct 2026, the panel rates Element (3.5/5), Mattermost (3.5/5) and Stackfield (3/5) highest among the other 19 Business Instant Messaging products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is Element (UK / wider Europe). Ratings are the AI panel’s opinion, formed from public evidence: how scores are made. The full list, with European products first: Brosix alternatives.

Where this could be wrong

What we left out

A claim that does not survive our checks costs us the claim, not the page. This is what was taken off this one.

Sources (12)

The pages every claim on this page was read from — each one checked, dated, and kept verifiable.

  1. 1 Vendor page brosix.com Checked 13 Oct 2026 Details →
  2. 2 Terms of service — found from the homepage www.brosix.com Checked 13 Oct 2026 Details →
  3. 3 Privacy policy — found from the homepage www.brosix.com Checked 13 Oct 2026 Details →
  4. 4 Channels, threads & search — found from sitemap help.brosix.com Checked 13 Oct 2026 Details →
  5. 5 Channels, threads & search — found from sitemap help.brosix.com Checked 13 Oct 2026 Details →
  6. 6 Encryption & access control — found from sitemap www.brosix.com Checked 13 Oct 2026 Details →
  7. 7 Encryption & access control — found from sitemap help.brosix.com Checked 13 Oct 2026 Details →
  8. 8 Retention, discovery & co-determination — found from sitemap www.brosix.com Checked 13 Oct 2026 Details →
  9. 9 Deployment & data custody — found from sitemap help.brosix.com Checked 13 Oct 2026 Details →
  10. 10 Deployment & data custody — found from sitemap help.brosix.com Checked 13 Oct 2026 Details →
  11. 11 Integrations & extensibility — found from sitemap www.brosix.com Checked 13 Oct 2026 Details →
  12. 12 Integrations & extensibility — found from sitemap help.brosix.com Checked 13 Oct 2026 Details →