Softwr

Database & Data Management · head to head

Cassandra vs Fathom

Cassandra logo

Cassandra

Database & Data Management

Manage massive amounts of data with linear scalability

From
Free
Rated
-
Full reviewWebsite
Fathom logo

Fathom

Database & Data Management

Free AI meeting assistant

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Cassandra no support for joins across tables; Fathom team plan requires minimum 2 users; cannot purchase single seat at team pricing
  • They diverge on capability: Cassandra covers Linear Scalability, Fathom covers Auto-recording.

Where they differ

Only the attributes on which Cassandra and Fathom actually diverge.

Attributes where Cassandra and Fathom differ
AttributeCassandraFathom
PlatformsLinux, macOS, Windows, Docker, KubernetesWeb, Zoom, Google Meet, Microsoft Teams
CategoryDatabase & Data ManagementUnknown
Founded20082020

Identical on both: starting price (Free), pricing model (Unknown), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Cassandra

  • Linear Scalability
  • Fault Tolerance
  • Multi-datacenter Replication
  • Tunable Consistency
  • CQL Query Language
  • Distributed Architecture
  • No Single Point of Failure
  • DataStax

Only in Fathom

  • Auto-recording
  • AI summaries
  • Transcription
  • Highlight clips
  • Zoom
  • Google Meet
  • HubSpot
  • Salesforce

What people use each for

The jobs each tool is most often brought in to do.

Cassandra

  • Real-time applicationsnot Fathom
  • Content managementnot Fathom
  • User profilesnot Fathom
  • Mobile backendsnot Fathom
  • Cachingnot Fathom

Fathom

  • AI-powered meeting transcription and automatic note-taking for sales teams and professionalsnot Cassandra
  • Meeting analysis with AI scorecards and action item generation that syncs to CRMsnot Cassandra

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Cassandra

  • No support for joins across tables
  • No ACID transactions across multiple rows
  • Data model must be designed around query patterns upfront, making schema evolution difficult
  • Partition key misconfigurations can cause uneven data distribution and hotspots that degrade performance

Fathom

  • Team plan requires minimum 2 users; cannot purchase single seat at team pricing
  • CRM field sync and deal view summaries available only on Business plan ($34/user/month) and above

Pricing, plan by plan

Cassandra

Free

No published plan breakdown. See the Cassandra review.

Fathom

Free

No published plan breakdown. See the Fathom review.

Which should you pick?

Choose Cassandra if

  • You need linear scalability.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Docker, Kubernetes.
  • You also want fault tolerance.
Cassandra review

Choose Fathom if

  • You need auto-recording.
  • You want to start without paying.
  • You work on Web, Zoom, Google Meet, Microsoft Teams.
  • You also want ai summaries.
Fathom review

Questions people ask

Is Cassandra or Fathom better?
Neither clearly leads. Cassandra starts at Free and Fathom at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cassandra or Fathom?
Cassandra starts at Free and Fathom at Free.
Does Cassandra or Fathom run on more platforms?
Cassandra runs on Linux, macOS, Windows, Docker, Kubernetes. Fathom runs on Web, Zoom, Google Meet, Microsoft Teams.
Can I use Cassandra for free?
Both have a free tier, so you can try either at no cost before committing.
What is Cassandra best used for?
Cassandra is most often used for real-time applications, content management, user profiles, mobile backends. Of those, real-time applications and content management are not what Fathom is typically brought in for.
What can Cassandra do that Fathom cannot?
Cassandra covers Linear Scalability, Fault Tolerance, Multi-datacenter Replication, Tunable Consistency. Fathom covers Auto-recording, AI summaries, Transcription, Highlight clips.

Answered from the vendors’ own pages

Cassandra: Does Cassandra support joins between tables?

No. Cassandra does not support joins or foreign keys. The data model requires denormalization, meaning data must be duplicated across tables to support different query patterns.

Source
Cassandra: Does Cassandra offer ACID transactions?

No. Cassandra provides only row-level atomicity and isolation, not full ACID transactions across multiple rows or tables. It uses lightweight transactions via Paxos for per-row compare-and-set operations.

Source
Cassandra: What programming languages can connect to Cassandra?

Cassandra supports official drivers for multiple languages including Python, Java, Node.js, and Go, allowing applications to communicate via the native Cassandra protocol.

Source
Cassandra: Can I deploy Cassandra in the cloud?

Yes. Cassandra can run on any cloud platform (AWS, Google Cloud, Azure) via Docker, virtual machines, or managed services like DataStax Astra DB, which provides a fully managed DBaaS option.

Source
Cassandra: Does Cassandra have a free option?

The open source Apache Cassandra is free. DataStax also offers Astra DB with a free tier providing up to 25GB storage and 25 million read/write operations per month.

Source
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