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Databases · head to head

Instaclustr vs Postman

Instaclustr logo

Instaclustr

Databases

NetApp-owned managed service for Cassandra, Kafka, OpenSearch, PostgreSQL and Cadence with a bring-your-own-cloud model

From
On request
Free plan
No
Visit InstaclustrFull review
Postman logo

Postman

Developer Tools

The API platform for building and using APIs

From
Free
Free plan
Yes
Visit PostmanFull review

The short version

  • Postman is an API platform for building and using APIs.
  • Postman starts at $14/mo; Instaclustr prices on request.
  • Only Instaclustr lists unmodified open source; only Postman lists API client.
  • Where Postman falls short: free plan limited to single user as of March 1, 2026, making it unsuitable for teams without paid plans.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which Instaclustr and Postman actually diverge.

Attributes where Instaclustr and Postman differ
AttributeInstaclustrPostman
Starting priceOn requestFree
Free tierNoYes
PlatformsWeb, LinuxWeb, Windows, macOS, Linux
CategoryDatabasesDeveloper Tools

Not yet recorded: pricing model for Postman, founded for Instaclustr.

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 Instaclustr

  • Unmodified open source
  • Bring your own cloud
  • Multi technology platform
  • 24/7 operations
  • Managed backups
  • Terraform provider
  • SOC 2 and compliance
  • Consulting and support

Only in Postman

  • API client
  • Automated testing
  • Mock servers
  • Documentation
  • Monitors
  • Workspaces
  • Version control
  • API design

What people use each for

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

Instaclustr

  • An enterprise running Cassandra and Kafka that cannot hire and retain specialists for bothnot Postman
  • A company with cloud committed spend that wants managed data infrastructure to draw down that commitment through the bring-your-own-cloud modelnot Postman
  • A team that left Elastic over the licence change and wants OpenSearch operated by someone else without another proprietary forknot Postman
  • An organisation migrating off Amazon MSK or Keyspaces that wants the same open source software with vendor operations but portability intactnot Postman

Postman

  • API testingnot Instaclustr
  • API documentationnot Instaclustr
  • API monitoringnot Instaclustr
  • Team collaborationnot Instaclustr
  • API developmentnot Instaclustr

Where each one falls short

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

Instaclustr

  • Pricing is only obtainable through a configurator or sales conversation, so comparing against AWS MSK or Confluent list prices requires several rounds of quotes rather than a spreadsheet
  • It manages infrastructure, not data modelling, so a poor Cassandra partition key or a mis-sized Kafka topic still causes outages that the managed service will not prevent
  • NetApp ownership since 2022 has put the roadmap inside a large storage vendor, and the product is now one line in a portfolio rather than the whole company
  • The catalogue is broad but each technology is served at a general level, so teams needing deep, vendor-specific tuning often find a specialist provider goes further on their one technology
  • Bring your own cloud reduces lock-in but shifts networking, IAM and VPC peering complexity onto the customer, which needs cloud engineering capacity the managed service was meant to save

Postman

  • Free plan limited to single user as of March 1, 2026, making it unsuitable for teams without paid plans
  • Only 25 collection runs per month and 1,000 API calls/month on free tier
  • Removed local-only Scratch Pad mode in 2023, forcing cloud account creation and sync
  • Requires Postman account and internet connection for most features
  • Cloud-first architecture with mandatory syncing to Postman's cloud servers
  • No CI/CD integration or advanced security features on free plan

Pricing, plan by plan

Instaclustr

On request
  • Instaclustr Managed PlatformOn request
    • Priced per node size, technology, cloud provider and region
    • Interactive calculator requires configuration before a figure appears
    • Discounts on 12 month commitment

Postman

Free
  • FreeFree
    • 1 user
    • 25 collection runs/month
    • 1,000 API calls/month
  • Team$14/mo
    • Team collaboration
    • Shared workspaces
    • API mocking
  • Professional$29/mo
    • Team features
    • Advanced security
    • SSO
  • Enterprise$49/mo
    • Professional features
    • Custom integrations
    • Priority support

Which should you pick?

Choose Instaclustr if

  • You need unmodified open source.
  • You work on Web, Linux.
  • You also want bring your own cloud.
Instaclustr review

Choose Postman if

  • You need api client.
  • You want to start without paying.
  • You work on Web, Windows, macOS, Linux.
  • You also want automated testing.
Postman review

Questions people ask

Is Instaclustr or Postman better?
Neither clearly leads. Instaclustr starts at On request and Postman at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Instaclustr or Postman?
Postman has a free tier; the other does not. Paid plans start at On request for Instaclustr and Free for Postman.
Does Instaclustr or Postman run on more platforms?
Instaclustr runs on Web, Linux. Postman runs on Web, Windows, macOS, Linux.
Can I use Postman for free?
Yes. Postman has a free tier, so you can try it without paying. Instaclustr starts at On request.
What is Instaclustr best used for?
Instaclustr is most often used for an enterprise running cassandra and kafka that cannot hire and retain specialists for both, a company with cloud committed spend that wants managed data infrastructure to draw down that commitment through the bring-your-own-cloud model, a team that left elastic over the licence change and wants opensearch operated by someone else without another proprietary fork, an organisation migrating off amazon msk or keyspaces that wants the same open source software with vendor operations but portability intact. Of those, an enterprise running cassandra and kafka that cannot hire and retain specialists for both and a company with cloud committed spend that wants managed data infrastructure to draw down that commitment through the bring-your-own-cloud model are not what Postman is typically brought in for.
What can Instaclustr do that Postman cannot?
Instaclustr covers Unmodified open source, Bring your own cloud, Multi technology platform, 24/7 operations. Postman covers API client, Automated testing, Mock servers, Documentation.

Answered from the vendors’ own pages

Instaclustr: Does Instaclustr modify the open source software?

No. Its stated commitment is one hundred per cent open source with no proprietary extensions, which is the main reason licence-averse buyers choose it.

Postman: What is the cost of Postman?

Postman has a free plan limited to 1 user, 25 collection runs/month, 1,000 API calls/month. Team plans start at $14/user/month for Basic. Professional at $29/user/month, and Enterprise at $49/user/month.

Source
Instaclustr: Who owns Instaclustr?

NetApp, which acquired the company in 2022. It is now branded NetApp Instaclustr.

Postman: Can I use Postman offline?

Postman requires an internet connection to sync collections to the cloud. Since 2023, the Scratch Pad local-only mode was removed. Users must sign in with a Postman account, and collections sync to cloud by default. Offline work is possible but limited without cloud sync features.

Source
Instaclustr: Is pricing published?

No. There is an interactive calculator, but figures depend on technology, node size, cloud and region, and commitments are negotiated.

Postman: Does Postman have team collaboration?

Team collaboration is not available on the free plan (limited to 1 user). Team plans start at $14/user/month and include shared workspaces, real-time collaboration, and team management features.

Source
Instaclustr: Can clusters run in my own cloud account?

Yes, through the bring-your-own-cloud model, so the infrastructure spend also counts toward your cloud commitment.

Postman: What are the free plan limits?

Free plan allows: 1 user only, 25 collection runs per month, 1,000 API calls/month, and 1,000 mock server calls/month. No CI/CD integration or advanced security features.

Source
Postman: Does Postman work with other development tools?

Postman integrates with Git repositories, offers a Node.js runner (Newman) for automation, and connects with popular CI/CD platforms. Teams using git-native workflows may prefer alternatives like Bruno.

Source
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