Question 1

What does the open-source Team Edition include vs the paid Enterprise Edition?

Accepted Answer

**Team Edition (AGPL-3.0 source / MIT compiled — free, what Mithtech deploys):** unlimited users, unlimited message history, unlimited integrations, all channel types (public / private / DMs / group DMs), threaded conversations, file sharing up to admin-configured limits, audio + screenshare calls, full-text search, mobile + desktop apps, plugin architecture with **mattermost-plugin-boards** (Kanban project management), REST + WebSocket API, webhooks, slash commands, bot accounts, SAML 2.0 + OIDC SSO (when paired with Keycloak), Markdown + code highlighting, custom emoji, custom branding/themes.

**Enterprise Edition (paid commercial licence from Mattermost Inc):** advanced compliance features — Attribute-Based Access Controls (ABAC), classification banners (SBU / Confidential / Secret), data spillage prevention, burn-on-read messages, advanced audit logging, eDiscovery, Microsoft Teams interoperability (embed Mattermost inside Teams/Outlook/M365), high-availability multi-server clustering, FedRAMP-tier compliance toolchain, sovereign LLM connectivity for AI features.

**Mithtech's positioning:** we deploy the open-source Team Edition for the vast majority of Indian mid-market operator / mid-market clients (devops teams, regulated finance, healthcare IT, internal collaboration). For clients that genuinely need ABAC, classification banners, or M365 embedding, we recommend they purchase Enterprise directly from Mattermost Inc (we do not resell licences) and assist with the upgrade migration. This keeps Mithtech's positioning honest — we are the open-source implementor, not a Mattermost reseller.

Question 2

What's the deal with Focalboard? Is it dead?

Accepted Answer

Honest answer: the **standalone Focalboard repo (mattermost-community/focalboard, 26.1k stars) is no longer maintained** — the README carries an explicit banner *"This repository is currently not maintained. If you're interested in becoming a maintainer please let us know."* The last standalone release was v8.0.0 in June 2024.

The Boards functionality continues as a **Mattermost plugin** at **github.com/mattermost/mattermost-plugin-boards** — latest release **v9.2.4 (March 31, 2026)**, actively maintained by Mattermost Inc. It installs as a standard Mattermost plugin (`tar.gz` upload through System Console) and lives inside your Mattermost site — same login, same database, same backup as the chat.

**Mithtech deploys Boards exclusively via the actively-maintained plugin path**, alongside the open-source Mattermost Team Edition. We do not deploy standalone Focalboard for new clients because the unmaintained repo is a security-update risk and feature parity has shifted to the plugin. Existing standalone Focalboard installs we inherit from previous vendors get migrated to the Mattermost-plugin-boards path during onboarding.

This gives clients the same Trello/Notion/Asana-alternative experience — unlimited boards, Kanban + Calendar + Table + Gallery views, custom properties, templates, archiving, per-board permissions — but on a supported, currently-maintained codebase.

Question 3

How does Mattermost compare to Slack, Microsoft Teams, and Discord on cost?

Accepted Answer

**Slack** (April 2026): Free tier limited to 90-day message history, 10 integrations; **Pro** $7.25/user/mo billed annually; **Business+** $12.50/user/mo; **Enterprise Grid** custom (typically $20+/user/mo). For a 50-person operator on Pro that's roughly $4,350/year (~₹3.6L/year), and 90-day history retention is a deal-breaker for any compliance-conscious team.

**Microsoft Teams** (April 2026): bundled into Microsoft 365 Business Basic ($4/user/mo) up to E5 ($22/user/mo). Cheaper if you already need M365 for Office, but the lock-in is total — no self-host option, no data sovereignty, no AGPL fork path.

**Discord**: free for public servers but designed for community use, not enterprise IT — no audit logs, no compliance tooling, no encrypted-at-rest server, no formal SLA.

**Mattermost open-source (Team Edition)** on a Mithtech-managed VPS: ₹2.5k–10k/month for the server depending on team size. **No per-user fee.** A 50-person team pays the same as a 5-person team. Implementation cost (Mithtech, one-time): ₹80k–3 L depending on plugin development scope. ROI vs Slack Pro: payback typically under 12 months for teams of 25+, dramatic for teams of 100+.

For regulated sectors needing data sovereignty (Indian BFSI under DPDP, healthcare under HIPAA-equivalents, defence-adjacent IT), Mattermost is often the only viable choice — Slack's data resides in the US, Teams is Microsoft-controlled. Mattermost on Indian VPS infrastructure under client control closes that gap.

Question 4

What does Mithtech actually build and modify on top of Mattermost — modify, develop, deploy?

Accepted Answer

Mattermost's stack is **TypeScript 49.1% + Go 39.9%** — exactly the languages our team works in daily, so production extensions are first-class engineering, not duct-tape. All modifications respect the AGPL — implemented as standalone Mithtech Mattermost plugins (Go SDK) or as external services that integrate via webhooks/API, never as patches to Mattermost source. Concrete examples from production deployments: 1. **Custom Mattermost plugins in Go** — Mithtech-built bridges to **ERPNext** (sales-order alerts in #sales channel, inventory low-stock notifications, purchase-order approvals via interactive message), **Frappe Helpdesk** (new ticket notifications with quick-reply, SLA breach alerts), **Frappe CRM** (deal-stage changes, lead assignment), **Polygin Integration** (WhatsApp template events posting back), **Smartflo** (inbound call alerts with caller-ID and CRM context), **n8n** (workflow run-status + error alerting). 2. **Slash commands** — `/erp customer ` returns customer summary inline; `/ticket open ` opens a Frappe Helpdesk ticket; `/lead create ` writes directly to Frappe CRM; `/onCall who` returns the current incident-response rota. 3. **Boards templates and property schemas** — custom mattermost-plugin-boards templates for sprint planning, asset tracking, client onboarding, audit checklists — deployed as JSON imports during onboarding. 4. **Keycloak SAML 2.0 / OIDC SSO** — shared identity with ERPNext, Chatwoot, Grafana, Nextcloud, Plausible — single-login open-source stack. 5. **Custom themes and branding** — per-client logo + colour overrides + custom desktop-app builds for clients that distribute internally-branded Mattermost desktop installers. 6. **Compliance hardening** — TLS via Let's Encrypt or client cert authority, audit log forwarding to Frappe Insights / Loki / Splunk, retention policy automation, encrypted automated backups (pg_dump + S3-compatible storage), 2FA enforcement. 7. **Incident-response playbooks** — Mithtech-built channels + bot integration with PagerDuty-equivalent FOSS or n8n alert routing for on-call rotation, escalation, and incident-channel auto-creation. 8. **OnPrem / air-gapped deployments** — full offline install bundle for clients in environments without internet (defence-adjacent IT, certain BFSI back-offices) with offline plugin distribution and update workflow. Clients receive: a Mithtech-owned Git repository (TypeScript + Go source for plugins, Docker Compose or Kubernetes Helm chart for deployment, runbook), 90-day post-go-live support window, and optional retainer for ongoing iteration.

Question 5

Can Mattermost handle large enterprise scale — 1,000+ users, defence-grade audit?

Accepted Answer

Yes — but with sizing decisions. Mattermost open-source Team Edition handles **1,000+ users on a single well-tuned PostgreSQL + Mattermost server** in production deployments today; Mattermost Inc's largest customers (US Air Force, NASA, Samsung — named on mattermost.com) run on the open-source codebase scaled horizontally. Mithtech's tuning playbook for 1k+ user deployments:

1. **PostgreSQL tuning** — connection pooling (PgBouncer), index optimisation on `Posts`, `ChannelMembers`, and `Threads` tables, regular VACUUM ANALYZE, separate read replicas for search workloads.
2. **Mattermost server clustering** — multiple app servers behind a load balancer with sticky sessions and shared Redis for cluster coordination (Enterprise feature for HA mode; Team Edition runs single-node well up to ~5k DAU).
3. **File storage** — S3-compatible object storage (MinIO self-hosted or AWS S3) for attachments at scale rather than local disk.
4. **WebSocket scaling** — load balancer with WebSocket support (Nginx or HAProxy with sticky sessions); monitor concurrent connection count.
5. **Search** — Elasticsearch backend (configured in System Console) for organisations indexing millions of messages.
6. **Audit & compliance** — audit log forwarding to Splunk/Loki/Frappe Insights, retention policies configured per channel category, eDiscovery via Enterprise Edition (commercial licence) when legally required.
7. **Mobile push notifications** — Mithtech-deployed Mattermost Push Proxy (open-source) for self-controlled push delivery — no dependence on Mattermost Inc's hosted push service.
8. **Backup strategy** — encrypted nightly pg_dump + S3-compatible storage + tested restore drills.

For defence-adjacent / sovereign deployments specifically: Mithtech offers air-gapped install bundles, offline plugin updates, custom CA TLS, and DPDP / sector-specific audit-log retention configurations. We do not currently hold FedRAMP / CMMC certifications ourselves — clients with those compliance requirements consume them via Mattermost Inc's Enterprise Edition + dedicated infrastructure, with Mithtech assisting on the implementation side.

Mattermost — Self-Hosted Team Collaboration + Boards

What can Mattermost do?

Open-source Team Edition — AGPL-3.0 source / MIT compiled / Apache 2.0 admin tools — unlimited users, unlimited history, unlimited integrations

How does Mattermost work?

Audit & scope

Deploy on your infrastructure

Customise & integrate

Train & roll out

Operate & evolve

Mattermost vs the alternatives

Estimate your savings with Mattermost.

Frequently asked questions about Mattermost

Get Mattermost running in weeks, not quarters.

Products that pair with Mattermost — Self-Hosted Team Collaboration + Boards

Frappe Gameplan — Async Discussions for Remote Teams

Chatwoot

Keycloak

Mail-in-a-Box — Self-Hosted Mail Server

Mautic

Polygin

Know your budget? Plan your Mattermost — Self-Hosted Team Collaboration + Boards stack.

Mattermost — Self-Hosted Team Collaboration + Boards

What can Mattermost do?

Open-source Team Edition — AGPL-3.0 source / MIT compiled / Apache 2.0 admin tools — unlimited users, unlimited history, unlimited integrations

How does Mattermost work?

Audit & scope

Deploy on your infrastructure

Customise & integrate

Train & roll out

Operate & evolve

Mattermost vs the alternatives

Estimate your savings with Mattermost.

Frequently asked questions about Mattermost

What does the open-source Team Edition include vs the paid Enterprise Edition?

What's the deal with Focalboard? Is it dead?

How does Mattermost compare to Slack, Microsoft Teams, and Discord on cost?

What does Mithtech actually build and modify on top of Mattermost — modify, develop, deploy?

Can Mattermost handle large enterprise scale — 1,000+ users, defence-grade audit?

Is Mattermost — Self-Hosted Team Collaboration + Boards free and open source?

Can Mattermost — Self-Hosted Team Collaboration + Boards be self-hosted on your own server?

What integrations does Mattermost — Self-Hosted Team Collaboration + Boards support?

How does Mith Tech implement Mattermost — Self-Hosted Team Collaboration + Boards for businesses?

What does the open-source Team Edition include vs the paid Enterprise Edition?

Get Mattermost running in weeks, not quarters.

Products that pair with Mattermost — Self-Hosted Team Collaboration + Boards

Frappe Gameplan — Async Discussions for Remote Teams

Chatwoot

Keycloak

Mail-in-a-Box — Self-Hosted Mail Server

Mautic

Polygin

Know your budget? Plan your Mattermost — Self-Hosted Team Collaboration + Boards stack.