Zammad vs OTRS / Znuny: Helpdesk Software Comparison 2026
Zammad and Znuny are both helpdesk and customer support platforms, but they are built for different operating models, budgets, and team workflows. This comparison reviews pricing, AI and automation, integrations, use cases, migration considerations, and practical buying trade-offs.
Answer-first summary
Zammad vs Znuny: choose Zammad if you need teams that prioritize ['open-source with genuinely modern ui', 'email, chat, twitter, facebook, phone in one place', 'agpl licensed — truly free']; choose Znuny if you need teams that prioritize ['enterprise-grade open-source', 'highly configurable', 'strong itsm', '170k community users']. Zammad lists from €7/agent/mo cloud; self-hosted free; Znuny lists free self-hosted. Verify current vendor pricing and AI add-ons before budgeting.
Quick verdict
Zammad is a stronger fit for teams that prioritize ['open-source with genuinely modern ui', 'email, chat, twitter, facebook, phone in one place', 'agpl licensed — truly free']. Znuny is a stronger fit for teams that prioritize ['enterprise-grade open-source', 'highly configurable', 'strong itsm', '170k community users']. Use the comparison below to check pricing source, AI scope, migration complexity, and integrations before choosing.
Brand naming and legacy search terms
Product names in helpdesk and ITSM change faster than buyer search behavior. HelpDeskPicker keeps current names and high-intent legacy names together so comparisons remain useful for users searching either version.
- Znuny (OTRS successor): Znuny is used as the current open-source OTRS successor in this directory. Searchers still use OTRS and OTRS Community Edition, so Znuny pages keep those legacy names visible. Legacy terms: OTRS, OTRS Community Edition, OTRS Community, Open-source OTRS.
Pricing comparison
Zammad lists from €7/agent/mo cloud; self-hosted free; Znuny lists free self-hosted. Treat this as a starting point, not a full total cost estimate. Real pricing can change with seats, AI usage, channels, reporting, implementation, marketplace apps, and data migration needs.
| Factor | Zammad | Znuny |
|---|---|---|
| Starting price | from €7/agent/mo cloud; self-hosted free | free self-hosted |
| G2 rating | 4.6 | 4 |
| Best fit | Free / open-source | Free / open-source, IT / ITSM |
| Founded | 2016 | 2001 |
| HQ | Munich, Germany | Oberursel, Germany |
| Customers | 10,000+ (self-hosted) | 170,000+ (community) |
| Known clients | Government agencies, universities, and NGOs across Europe | Government agencies, large enterprises, NGOs |
AI and automation
Zammad
Zammad 7.0 (2024) introduced AI features including smart ticket suggestions and response assist. Users choose their own AI model.
Znuny
Basic automation. Commercial OTRS version has more AI.
For AI buying decisions, compare not only feature names but also automation limits, handoff quality, knowledge base dependency, pricing per resolution or add-on, reporting, and how much configuration your team needs before AI becomes useful.
Integrations
Zammad is commonly evaluated by teams that prioritize ['open-source with genuinely modern ui', 'email, chat, twitter, facebook, phone in one place', 'agpl licensed — truly free']. Znuny is commonly evaluated by teams that prioritize ['enterprise-grade open-source', 'highly configurable', 'strong itsm', '170k community users']. Before choosing, check native integrations for your CRM, ecommerce platform, chat tools, telephony, BI stack, identity provider, and data warehouse.
When to choose Zammad
Choose Zammad when you need teams that prioritize ['open-source with genuinely modern ui', 'email, chat, twitter, facebook, phone in one place', 'agpl licensed — truly free'].
- ['Open-source with genuinely modern UI', 'Email, chat, Twitter, Facebook, phone in one place', 'AGPL licensed — truly free']
Check these trade-offs before rollout:
- ['Self-hosting requires Linux skills', 'Cloud version is pricier', 'PostgreSQL-only from v7']
When to choose Znuny
Choose Znuny when you need teams that prioritize ['enterprise-grade open-source', 'highly configurable', 'strong itsm', '170k community users'].
- ['Enterprise-grade open-source', 'Highly configurable', 'Strong ITSM', '170k community users']
Check these trade-offs before rollout:
- ['Hard to configure', 'Steep learning curve', 'Requires technical expertise']
Migration considerations
If you are moving from Zammad to Znuny, or from Znuny to Zammad, the main challenge is usually not just ticket export. You need to plan how users, organizations, companies, comments, private notes, attachments, tags, statuses, custom fields, knowledge base articles, and record relationships will map into the new system.
Before migration, verify API limits, attachment handling, deleted or archived records, field mapping, ticket status logic, agent matching, knowledge base structure, and whether you need a delta migration close to go-live.
Review methodology and disclosure
Reviewed by Dmytro Lazarchuk, founder of Help Desk Migration. HelpDesk Picker is an independent software comparison project connected to Help Desk Migration. Some pages link to HDM migration services, but platform rankings and comparison notes are based on public product information, vendor documentation, pricing pages, and visible feature evidence. Read the methodology.
FAQ
The main difference is usually fit: pricing model, workflow depth, integrations, AI capabilities, implementation complexity, and the type of support team each product serves best.
Not universally. Zammad can be better for some teams, while Znuny can be better for others. The right choice depends on your support channels, team size, budget, automation needs, and existing software stack.
Yes, in many cases you can migrate tickets, users, companies, comments, attachments, tags, custom fields, and knowledge base data. The exact scope depends on each platform's API and export/import limitations.
Based on listed starting prices, Znuny is cheaper at entry level. However, total cost depends on add-ons, AI usage, number of agents, support channels, and implementation work.