OpenCATS

HR & people

Free self-hostedEditorial overview
A CLOSER LOOK

What is OpenCATS?

OpenCATS is a free, self-hosted applicant tracking system for organizing candidates, vacancies and recruitment activity. It helps recruiting teams maintain a shared hiring pipeline and resume records, with source access and attribution requirements inherited from its mixed licensing history.

Candidate records

Job orders

Recruitment pipeline

Resume management

Is it a good fit?

Best suited to

Recruiters seeking an independently hosted applicant database.

Before you choose

Review the mixed license and operational maintenance requirements.

Editorial assessment based on the provider’s published information. Our method

Know what you're signing up for.

OpenCATS can be used under MPL-2.0 and CATS Public License terms without a software subscription. Self-hosted applicant tracking; original-code attribution requirements and server administration still apply. Deployment, maintenance and any external services remain the user’s responsibility.

Self-hosted applicant tracking; original-code attribution requirements and server administration still apply.

Check current official pricing

The useful parts. The trade-offs.

Why consider it

Shared applicant records reduce fragmented recruiting notes

Self-hosting controls where resumes are stored

What to keep in mind

Mixed licensing requires preserving applicable notices

Server maintenance and document retention need management

How to use it well

Define the hiring stages and candidate ownership rules before importing resumes. Test one vacancy from initial applicant entry through interviews and placement, keeping notes and status changes consistent so another recruiter can understand the candidate’s history.

Use a retention policy for applicant documents and restrict access to hiring staff who need it. OpenCATS is self-hosted software, so upgrades and backups are part of the deployment. Its original CATS code retains license requirements alongside newer MPL-licensed contributions.

A few things you might be wondering.

Is OpenCATS free?

OpenCATS can be used under MPL-2.0 and CATS Public License terms without a software subscription. Self-hosted applicant tracking; original-code attribution requirements and server administration still apply. Deployment, maintenance and any external services remain the user’s responsibility.

Is OpenCATS a general HR payroll system?

No. It focuses on applicant tracking and recruitment rather than payroll.

Why are two licenses mentioned?

New OpenCATS contributions use MPL-2.0, while original CATS code retains the CATS Public License.

Where can I check the latest prices?

Use the provider link on this page. Billing period, location, team size, promotions, taxes, and optional extras may affect the amount you pay.

How should I compare this tool with alternatives?

Choose tools for the same task, then compare their feature limits, platform support, and total cost for your team. The Compare button helps you keep a shortlist.

Are the user reviews moderated?

Yes. New reviews are submitted for moderation. We show published user reviews separately from the editorial overview and never assign a default user rating.

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