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PostgreSQL vs Signal

PostgreSQL logo

PostgreSQL

Software

The world's most advanced open source relational database

From
Free
Rated
-
Full reviewWebsite
Signal logo

Signal

Software

Speak Freely

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: PostgreSQL requires manual scaling across multiple machines for very large deployments; Signal signal must be installed on a phone before the desktop app can be used, so there is no phone-free desktop-only account
  • They diverge on capability: PostgreSQL covers ACID Compliance, Signal covers End-to-end encryption.

Where they differ

Only the attributes on which PostgreSQL and Signal actually diverge.

Attributes where PostgreSQL and Signal differ
AttributePostgreSQLSignal
Pricing modelUnknownfree
PlatformsLinux, Windows, macOS, BSD, UnixWindows, Macos, Linux, Ios, Android
Founded19962010

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

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 PostgreSQL

  • ACID Compliance
  • JSON/JSONB Support
  • Full-text Search
  • Extensibility
  • Advanced Indexing
  • Partitioning
  • Replication
  • pgAdmin

Only in Signal

  • End-to-end encryption
  • Disappearing messages
  • Screen security
  • Group chats
  • Voice calls
  • Video calls
  • File sharing
  • No data collection

Both cover

  • Linux support
  • Windows support

What people use each for

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

PostgreSQL

  • Transaction processingnot Signal
  • Data storagenot Signal
  • Application backendnot Signal
  • Reportingnot Signal
  • Data analyticsnot Signal

Signal

  • Private messagingnot PostgreSQL
  • Secure group communicationnot PostgreSQL
  • Confidential conversationsnot PostgreSQL
  • Journalism communicationnot PostgreSQL
  • Family messagingnot PostgreSQL

Where each one falls short

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

PostgreSQL

  • Requires manual scaling across multiple machines for very large deployments
  • Performance tuning requires deep knowledge of database internals
  • No built-in graphical admin interface; command-line tools are primary method

Signal

  • Signal must be installed on a phone before the desktop app can be used, so there is no phone-free desktop-only account

Pricing, plan by plan

PostgreSQL

Free

No published plan breakdown. See the PostgreSQL review.

Signal

Free
  • FreeFree
    • End-to-end encrypted messaging
    • Voice and video calls
    • Group chats

Which should you pick?

Choose PostgreSQL if

  • You need acid compliance.
  • You want to start without paying.
  • You work on Linux, Windows, macOS, BSD, Unix.
  • You also want json/jsonb support.
PostgreSQL review

Choose Signal if

  • You need end-to-end encryption.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android.
  • You also want disappearing messages.
Signal review

Questions people ask

Is PostgreSQL or Signal better?
Neither clearly leads. PostgreSQL starts at Free and Signal at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PostgreSQL or Signal?
PostgreSQL starts at Free and Signal at Free.
Does PostgreSQL or Signal run on more platforms?
PostgreSQL runs on Linux, Windows, macOS, BSD, Unix. Signal runs on Windows, Macos, Linux, Ios, Android.
Can I use PostgreSQL for free?
Both have a free tier, so you can try either at no cost before committing.
What is PostgreSQL best used for?
PostgreSQL is most often used for transaction processing, data storage, application backend, reporting. Of those, transaction processing and data storage are not what Signal is typically brought in for.
What can PostgreSQL do that Signal cannot?
PostgreSQL covers ACID Compliance, JSON/JSONB Support, Full-text Search, Extensibility. Signal covers End-to-end encryption, Disappearing messages, Screen security, Group chats. Both handle Linux support, Windows support.

Answered from the vendors’ own pages

PostgreSQL: Is PostgreSQL completely free?

Yes. PostgreSQL is completely free and open source with no licensing fees or restrictions on use.

Source
PostgreSQL: What platforms does PostgreSQL run on?

PostgreSQL runs on all major operating systems including Linux, Windows, macOS, BSD, and commercial Unix variants, and has been proven highly scalable managing terabytes to petabytes of data.

Source
PostgreSQL: What procedural languages are supported?

PostgreSQL supports stored functions and procedures in multiple languages including PL/pgSQL, Perl, Python, Tcl, Java, JavaScript, R, and Rust.

Source
PostgreSQL: What is ACID compliance in PostgreSQL?

PostgreSQL has been ACID-compliant since 2001, ensuring data integrity through atomicity, consistency, isolation, and durability guarantees for all transactions.

Source
PostgreSQL: Does PostgreSQL support JSON data?

Yes. PostgreSQL supports JSON and JSONB data types for storing and querying JSON documents, along with XML and other document formats.

Source
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Related pages

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