Nussknacker
Polish low-code visual designer for Apache Flink stream processing, with an Apache 2.0 open-source core
Quick Overview
| Company | TouK sp. z o.o. s.k.a. (builds Nussknacker) |
|---|---|
| Category | Event Streaming Platforms |
| Headquarters | Warsaw, Poland |
| Founded | Not stated |
| EU Presence | Yes - Poland (EU) |
| Data Location | SaaS region not listed; BYOC or on-premises on Enterprise and Custom plans |
| Open Source | Apache 2.0 (core) |
| GDPR Compliant | Yes |
| Self-Hosting | Yes - open-source core, BYOC and on-premises on higher plans |
| Main Features | Visual drag-and-drop designer, Apache Flink processing, real-time ML model deployment, open-source core, SaaS and BYOC |
| Pricing | 3-month free trial; Starter $480/month, Professional $950/month, Enterprise $2,840/month or $29,000/year; USD excluding VAT |
| Best For | Teams that want visual stream processing scenarios on Flink without writing code |
| Replaces | Confluent Cloud for Apache Flink |
Detailed Review
Nussknacker is a low-code platform for stream processing built on Apache Flink. The website says the platform is built by TouK, which has its address at Bohaterow Wrzesnia 9, 02-389 Warsaw, Poland.
The contracting entity for the SaaS offer is not named on the Nussknacker site. Facts on this page were checked on 3 November 2026.
Visual designer in Event Streaming Platforms
Nussknacker offers a low-code visual drag-and-drop designer for Apache Flink stream processing. Real-time ML models can be deployed inside processing scenarios.
Open-source core
The Nussknacker core is open source under the Apache 2.0 licence, is available on GitHub and can be self-hosted. The open-source core has no support and no enterprise integrations.
Plans and hosting
The SaaS trial is free for 3 months, by email only, and scenarios stop when the trial ends unless a paid plan is chosen. Enterprise is available as SaaS, BYOC or on-premises.
Limitations to Consider
The open-source core has no support and no enterprise integrations, so a self-hosted user carries that burden alone. The SaaS cloud region is not listed on the pricing page, and the SaaS contracting entity is not named. Prices are in USD, not euros. Nussknacker does not host Kafka; see Aiven.
Who Should Use Nussknacker
Teams that want to build stream processing scenarios visually on Flink and value an Apache 2.0 core they can self-host.
Pros and Cons
Pros
- Visual designer for Flink scenarios
- Apache 2.0 open-source core
- 3-month free trial
- BYOC and on-premises options
- Real-time ML deployment
Cons
- Open core has no support
- SaaS region not listed
- SaaS contracting entity not named
- Prices in USD
Alternatives to Nussknacker
Other European event streaming platforms worth comparing before you decide:
Aiven
Finland · Managed Apache Kafka in EU regions, with a free plan
Axual
Netherlands · Governed Kafka platform on an EU sovereign cloud
Lenses
United Kingdom · Developer workspace and replication layer for Kafka
Ververica
Germany · Apache Flink stream processing from the Munich company
See all European event streaming platforms or compare them directly against Confluent Cloud for Apache Flink on our alternatives page.
Frequently Asked Questions
The core is open source under the Apache 2.0 licence and available on GitHub.
The SaaS trial is free for 3 months and scenarios stop when it ends unless a paid plan is chosen.
The SaaS cloud region is not listed on the pricing page.