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Developer Tools · head to head

Hookdeck vs PaintTool SAI

Hookdeck logo

Hookdeck

Developer Tools

Event gateway that receives, queues, retries and replays inbound webhooks

From
Free
Free plan
Yes
Visit HookdeckFull review
P

PaintTool SAI

Design

Lightweight digital painting and illustration software for Windows

From
5500/month
Free plan
No
Visit PaintTool SAIFull review

The short version

  • Hookdeck has a free plan, then $39/mo; PaintTool SAI starts at JPY 5500/mo.
  • Only Hookdeck lists ingest and persist; only PaintTool SAI lists Pressure-Sensitive Tablet Support.
  • Where Hookdeck falls short: pricing meters delivered events, so fan-out multiplies the bill: one inbound event routed to four services counts as four deliveries.
  • Where PaintTool SAI falls short: windows-only software with no native Mac or Linux version.
  • Prices and features on this page were last checked on 31 August 2026.

Where they differ

Only the attributes on which Hookdeck and PaintTool SAI actually diverge.

Attributes where Hookdeck and PaintTool SAI differ
AttributeHookdeckPaintTool SAI
Starting priceFree5500/month
Pricing modelPer month by delivered event countOne-time
Free tierYesNo
PlatformsWeb, Linux, macOS, WindowsWindows
CategoryDeveloper ToolsDesign

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 Hookdeck

  • Ingest and persist
  • Automatic retries
  • Filters and fan-out
  • Transformations
  • Local development CLI
  • Rate limiting

Only in PaintTool SAI

  • Pressure-Sensitive Tablet Support
  • Anti-Aliased Brushes
  • 16-bit ARGB Color Channels
  • Lightweight Performance
  • Crash Data Protection

What people use each for

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

Hookdeck

  • A payments integration where losing a Stripe event during a deploy causes an order to go unfulfillednot PaintTool SAI
  • Fanning one provider webhook out to several internal services without each subscribing separatelynot PaintTool SAI
  • Debugging a partner integration by replaying the exact failing payload after shipping a fixnot PaintTool SAI
  • Receiving production-shaped webhooks on a developer laptop without running a public tunnelnot PaintTool SAI

PaintTool SAI

  • Digital illustration and manga artnot Hookdeck
  • Line art and inking with pressure-sensitive pensnot Hookdeck
  • Lightweight painting on lower-spec computersnot Hookdeck
  • Character and concept art sketchingnot Hookdeck

Where each one falls short

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

Hookdeck

  • Pricing meters delivered events, so fan-out multiplies the bill: one inbound event routed to four services counts as four deliveries
  • Free-tier retention is three days, which is shorter than the time it typically takes to notice a failing integration, so the payloads needed for a replay are often already gone
  • It becomes a single point of failure in front of every third-party integration, and an outage there means every provider webhook queues or fails at once
  • The transformation layer runs JavaScript in a constrained environment, so anything that needs a database lookup or an external call has to happen downstream instead
  • For a team already running Kafka or SQS the value is mostly the console and the replay UI, which is a hard cost to justify against infrastructure they already operate

PaintTool SAI

  • Windows-only software with no native Mac or Linux version
  • Only supports 32-bit operation, lacking modern 64-bit performance benefits
  • Lacks the advanced brush engine customization and layer effects found in tools like Photoshop or Clip Studio Paint
  • No cloud sync or mobile app, unlike many modern illustration tools

Pricing, plan by plan

Hookdeck

Free
  • DeveloperFree
    • Up to ten thousand events per month
    • Three-day retention
    • One user
  • Team$39/mo
    • Ten thousand events included
    • Unlimited users
    • Pay as you go metering above the included events
  • Growth$499/mo
    • Ten thousand events included plus metered usage
    • Thirty-day retention
    • Uptime and latency SLAs
  • EnterpriseOn request
    • Negotiated event volume
    • Custom retention
    • Dedicated support

PaintTool SAI

5500/month
  • Standard License$5,500/mo
    • Perpetual license
    • All 1.x.x minor updates
    • Free upgrade path to version 2

Which should you pick?

Choose Hookdeck if

  • You need ingest and persist.
  • You want to start without paying.
  • You work on Web, Linux, macOS, Windows.
  • You also want automatic retries.
Hookdeck review

Choose PaintTool SAI if

  • You need pressure-sensitive tablet support.
  • You work on Windows.
  • You also want anti-aliased brushes.
PaintTool SAI review

Questions people ask

Is Hookdeck or PaintTool SAI better?
Neither clearly leads. Hookdeck starts at Free and PaintTool SAI at 5500/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Hookdeck or PaintTool SAI?
Hookdeck has a free tier; the other does not. Paid plans start at Free for Hookdeck and 5500/month for PaintTool SAI.
Does Hookdeck or PaintTool SAI run on more platforms?
Hookdeck runs on Web, Linux, macOS, Windows. PaintTool SAI runs on Windows.
Can I use Hookdeck for free?
Yes. Hookdeck has a free tier, so you can try it without paying. PaintTool SAI starts at 5500/month.
What is Hookdeck best used for?
Hookdeck is most often used for a payments integration where losing a stripe event during a deploy causes an order to go unfulfilled, fanning one provider webhook out to several internal services without each subscribing separately, debugging a partner integration by replaying the exact failing payload after shipping a fix, receiving production-shaped webhooks on a developer laptop without running a public tunnel. Of those, a payments integration where losing a stripe event during a deploy causes an order to go unfulfilled and fanning one provider webhook out to several internal services without each subscribing separately are not what PaintTool SAI is typically brought in for.
What can Hookdeck do that PaintTool SAI cannot?
Hookdeck covers Ingest and persist, Automatic retries, Filters and fan-out, Transformations. PaintTool SAI covers Pressure-Sensitive Tablet Support, Anti-Aliased Brushes, 16-bit ARGB Color Channels, Lightweight Performance.

Answered from the vendors’ own pages

Hookdeck: Is there a free plan?

Yes, ten thousand events a month with three-day retention and one user.

PaintTool SAI: Is there a free trial for PaintTool SAI?

Yes, PaintTool SAI offers a 31-day free trial with full functionality before requiring purchase of a license.

Source
Hookdeck: How is usage counted?

By delivered events, so a single inbound webhook fanned out to three destinations counts as three.

PaintTool SAI: What does the license cover?

The one-time 5,500 JPY purchase provides a perpetual license covering all minor updates within version 1.x.x; a major version 2 upgrade is offered for free.

Source
Hookdeck: Can I replay a failed webhook?

Yes, individually or in bulk from the console, with the original payload.

PaintTool SAI: What operating systems are supported?

PaintTool SAI runs on Windows XP through Windows 11, but only in 32-bit mode, requiring at least a 450MHz Pentium processor and 256MB of RAM.

Source
Hookdeck: Does it work for outbound webhooks too?

Yes, the same queueing, retry and observability applies to webhooks you send.

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