Tessio

Free plan Self-hostedWeb

What Tessio is

Tessio is a self-hosted IT service management platform for handling tickets, inventory, knowledge articles, forms, dashboards, and workflow automation. Its AI assistant, Tess, can sort and summarize tickets, draft replies, find similar tickets, and answer natural-language questions about the queue. A visual builder lets teams create workflows with branches, ticket changes, comments, HTTP calls, and sandboxed scripts. The knowledge base supports self-service articles and an Ask Tess response box. Tessio can send notifications through SMTP and convert inbound IMAP email into tickets; email credentials are stored encrypted.

AI starts disabled, and Tessio says it makes no external model calls in that state. When enabled, relevant text is sent to OpenAI after pattern-based redaction of common email addresses, US Social Security numbers, phone numbers, and credit-card numbers. The maker cautions that this may miss obfuscated variants. The self-hosted Community plan is free, licensed under AGPL-3.0, and includes five admin or agent seats with unlimited requesters. Deployment options include Docker Compose, a single container, and Kubernetes Helm; PostgreSQL with pgvector and Redis are required.

Who it suits

Tessio suits service-desk teams looking for a self-hosted alternative to established ITSM platforms. It may also fit teams that need a knowledge base, email-to-ticket handling, or configurable workflows.

What it does well

Free Community plan includes five admin or agent seats.
Unlimited requesters on the Community plan.
Includes ticketing, inventory, forms, and knowledge base.
Workflow builder supports branches and sandboxed scripts.
AI is disabled by default.

What to know first

Requires PostgreSQL with pgvector and Redis.
AI redaction may miss obfuscated personal information.
Community core is licensed under AGPL-3.0.
Enterprise features are commercial.

Plans

Plan	Billed and limits	Price
Community	5 admin/agent seats · unlimited requesters · full core ITSM · self-hosted	Free
Enterprise	per user/month; price not stated · self-hosted · additional seats · SSO/OIDC · audit log viewer	On request
Cloud	per user/month; price not stated · hosted · unlimited requesters · SSO/OIDC · audit log viewer · metered AI credits	On request

As tessio-ai.github.io lists them, read 7 Oct 2026. The maker's own page has the final word.

Verdict

Tessio combines core service-desk functions with workflows and an optional AI assistant. Its free Community plan is self-hosted, and deployment requires PostgreSQL with pgvector and Redis.

Facts from Tessio's own pages

AI assistant: Tess can triage tickets, draft replies, summarize tickets, find similar tickets, and answer natural-language questions about the queue. · tessio-ai.github.io, 7 Oct 2026
AI integrations: The documentation names OpenAI as the AI provider; the repository description also lists OpenAI-compatible endpoints including Azure OpenAI, Ollama, LM Studio, and vLLM. · github.com, 7 Oct 2026
Deployment: The maker documents Docker Compose, single-container, and Kubernetes Helm deployment options. · tessio-ai.github.io, 7 Oct 2026
Email: Tessio supports SMTP outbound notifications and IMAP inbound email-to-ticket, with credentials stored encrypted. · tessio-ai.github.io, 7 Oct 2026
Identity: Tessio supports OpenID Connect providers including Google, Okta, Entra/Azure AD, Keycloak, and Auth0. · tessio-ai.github.io, 7 Oct 2026
Intended audience: The maker describes Tessio as a service desk for teams seeking an open alternative to ServiceNow, Zendesk, or Freshservice. · github.com, 7 Oct 2026
Knowledge base: The knowledge base supports self-service articles and an Ask Tess answer box over the knowledge base. · tessio-ai.github.io, 7 Oct 2026
License: The Community core is self-hosted and AGPL-3.0 licensed; enterprise features are commercial. · github.com, 7 Oct 2026
Notable AI limitation: The maker describes PII detection as best-effort pattern matching and says it does not guarantee detection of every obfuscated variant. · tessio-ai.github.io, 7 Oct 2026
PII handling: Before enabled AI features send relevant text to OpenAI, Tessio says it redacts common email addresses, US Social Security numbers, phone numbers, and credit-card numbers. · tessio-ai.github.io, 7 Oct 2026
Privacy controls: AI is disabled by default, and Tessio says no external model calls occur while it remains disabled. · tessio-ai.github.io, 7 Oct 2026
Product: Tessio is a self-hosted IT service management platform with ticketing, inventory, a knowledge base, forms, dashboards, and workflow automation. · tessio-ai.github.io, 7 Oct 2026
Requirements: The documented deployment requires PostgreSQL with pgvector and Redis; Docker or Kubernetes and Helm are also required depending on install path. · tessio-ai.github.io, 7 Oct 2026
Workflow automation: The visual workflow builder supports branches, ticket updates, comments, HTTP calls, and sandboxed scripts. · tessio-ai.github.io, 7 Oct 2026

Where Tessio stands on Freedom251

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