Category: Time Tracking
8 European alternatives to Cattr — GDPR-compliant & EU-hosted.
Ukrainian open-source time tracker with activity detection and screenshots, multi-platform.
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Facts
- Headquarters
- UA (OTHER)
- EU adequacy decision
- No — no adequacy decision
- Sovereignty model
- Open-source, distributed
- Category
- Time Tracking
- Type
- Product
- GDPR-compliant
- Yes
- Open-source
- Yes
- Data hosting
- EU, OTHER
Sources
Public sources used in the latest check of this record.
Compliance evidence
The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".
No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction
Sovereignty profile of Cattr
How this vendor scores on the five dimensions of the Digital Sovereignty Heatmap: 0 is sovereign, 100 is high exposure. These are the same scores the assessment uses.
| Jurisdictional exposure (JES) | Headquartered outside the EU (UA) | 50 |
|---|---|---|
| Data residency (DRS) | EU and non-EU hosting (EU, OTHER) | 0 |
| Cryptographic key sovereignty (CKS) | Self-hostable: encryption keys under your own control | 10 |
| Platform lock-in (PLS) | Open source: low switching costs | 20 |
| Source & runtime sovereignty (SRS) | Source code auditable, forkable and self-hostable | 25 |
| Average | 21 |
Why digital sovereignty matters with Cattr
Cattr is headquartered in UA, outside the EU. Contracts and data therefore also fall under non-European law. The GDPR applies through contractual terms, but in a conflict with local legislation you have less certainty than with a European vendor.
Cattr hosts data in EU, OTHER. Exactly what stays within the EU — and what does not — is defined by the vendor's data processing agreement and sub-processor list, not by a setting you control yourself; check those documents for the precise scope, including backups, logs and support access.
Cattr is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.
What this means for your organisation depends on your whole stack and context. The free assessment weighs Cattr together with your other vendors and gives a total score, a heatmap and the main risk drivers.
Top EU-based & GDPR-compliant alternatives to Cattr
The European alternatives to Cattr come from our knowledge base of over 3,600 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.
- solidtime↗
solidtime is an open-source (AGPL-3.0) time tracking application built by a two-person Austrian partnership (GesbR) based in Vienna, Austria (Türkenstraße 19/1b, 1090 Wien). It is bootstrapped, has 8,600+ GitHub stars and 15,000+ users, and remains actively developed with updates as recent as June 2026. It markets itself as privacy-first and GDPR-friendly, offering both a self-hosted option and an EU-hosted managed service — no dependency on non-EU cloud infrastructure was found in verification.
AT · open-source
- SwissWorkTime↗
Swiss workforce-management platform (Sion) for field teams with NFC/QR clocking and payroll export.
CH · commercial
- Time Cockpit↗
Austrian cloud-based time tracking, project controlling, and billing platform for IT service providers and consultancies, built by software architects gmbh in Leonding, Upper Austria. Hosted on ISO 27001-certified Microsoft Azure data centers located within the EU.
AT · commercial
- timeBuzzer↗
German time-tracking SaaS from timeBuzzer GmbH (Saarbrücken), aimed at European SMEs and freelancers, offering simple time logging with an optional physical device for task switching.
DE · commercial
Frequently asked questions
What is the best European alternative to Cattr?
It depends on your use case. Strong EU alternatives to Cattr include Clockodo, DeskTime and Hourtick. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.
Are there open-source alternatives to Cattr?
Yes. Open-source EU alternatives to Cattr include solidtime. These keep your data fully under your own control and let you self-host if you want to.
Is Cattr GDPR-compliant and where is the data hosted?
Cattr is headquartered in UA (OTHER) and hosts data in EU, OTHER. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. For full EU data residency the EU alternatives on this page usually offer more certainty.
Digital sovereignty in Time Tracking
Time Tracking: Apps for tracking time spent on tasks and projects. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.
Also in this category
How sovereign is your whole stack?
Start with Cattr and add the rest of your software. You immediately see the score, the heatmap and the European alternatives.
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