can i fork it?

Head-to-Head Comparison · Alternative to Aurelius · 🔬 user research

Aurelius vs CATMA

Collaborative text coding in a browser, built by academics and uninterested in your sales funnel. Here is how CATMA ($0/mo open source) stacks up against Aurelius ($49/mo) across cost, hosting, data privacy, and real-world trade-offs.

Open-Source Alternative

CATMA

$0.00/mo · GPL-3.0

Aurelius vs CATMA Specification Matrix

facts verified 2026-08-14

DimensionAurelius (Paid)CATMA (Replacement)
Monthly Price$49 / mo$0 / mo
1-Year Cost (1 seat)$588 / yr$0 / yr (Save $588)
1-Year Cost (5 seats)$2,940 / yr$0 / yr (Save $2,940)
1-Year Cost (10 seats)$5,880 / yr$0 / yr (Save $5,880)
Source & LicenseProprietary SaaSopen source GPL-3.0
Where It RunsVendor CloudLocal or hosted (your machine or their cloud)
PlatformsWeb / Cloud
webthey host it
GitHub Stars—★ 102 (active jul 2026)

Deep Dive: Switching from Aurelius to CATMA

Trade-offs, installation & data architecture

The Catch vs Aurelius

What you trade away

It is a serious collaborative text-annotation system, but it lacks Aurelius's researcher-friendly interview repository, rapid synthesis workflow, and product-research reporting.

Installation

How to deploy CATMA

Use the free hosted web app, or run the CATMA Standalone Docker image with its bundled GitLab backend

Day-2 Operations & Setup

What it takes to run

The hosted app is easy, but private/offline use means running a large Docker container with an embedded GitLab service and managing its volumes and updates

Data Ownership

Where your data lives

The public service stores projects in CATMA's server-side GitLab repositories; standalone/self-hosted deployments keep CATMA and GitLab data in Docker volumes, with exports available as text, TEI-XML, CSV and Git repositories

Build vs Fork Verdict: KINDA (the core, yes. the polish, no)

Why fork CATMA instead of vibe-coding a Aurelius clone?

The core loop is buildable, but a dependable replacement becomes a real weekend or multi-day project. For Aurelius, organize interview notes, code excerpts, and synthesize themes into findings. The hard boundary is research-specific tagging, collaboration, reporting, and import workflows, plus participant network, synthesis workflow, and collaboration.

Aurelius vs CATMA FAQ

Is CATMA a good free alternative to Aurelius?+

Yes. CATMA is a verified open-source (GPL-3.0) replacement for Aurelius. Collaborative text coding in a browser, built by academics and uninterested in your sales funnel.

What is the catch when switching from Aurelius to CATMA?+

It is a serious collaborative text-annotation system, but it lacks Aurelius's researcher-friendly interview repository, rapid synthesis workflow, and product-research reporting.

How much do you save switching from Aurelius to CATMA?+

Aurelius costs $49/mo ($588/yr) per seat, whereas CATMA is $0/mo. Switching saves $588/yr for a solo user, $2,940/yr for a 5-person team, and $5,880/yr for a 10-person team.

How do I install or self-host CATMA instead of Aurelius?+

Install: Use the free hosted web app, or run the CATMA Standalone Docker image with its bundled GitLab backend. Setup: The hosted app is easy, but private/offline use means running a large Docker container with an embedded GitLab service and managing its volumes and updates

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