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Web Development · head to head

HTMX vs ProtoPie

HTMX logo

HTMX

Web Development

Lightweight JavaScript library enabling AJAX, WebSockets, and server-sent events in HTML

From
Free
Rated
-
Full reviewWebsite
ProtoPie logo

ProtoPie

Design

Create advanced interactive prototypes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: HTMX best suited for server-rendered architectures, not pure client-side SPAs; ProtoPie the free plan allows 2 prototypes, 8 scenes per prototype and 50MB of cloud storage
  • They diverge on capability: HTMX covers AJAX requests, ProtoPie covers Interactive prototyping.

Where they differ

Only the attributes on which HTMX and ProtoPie actually diverge.

Attributes where HTMX and ProtoPie differ
AttributeHTMXProtoPie
Pricing modelopen-sourcefreemium
PlatformsWebWindows, Macos, Web, Ios, Android
CategoryWeb DevelopmentDesign
FoundedUnknown2013

Identical on both: starting price (Free), 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 HTMX

  • AJAX requests
  • HTTP verb support
  • DOM targeting
  • Swap strategies
  • WebSocket support
  • Server-sent events
  • Out-of-band updates

Only in ProtoPie

  • Interactive prototyping
  • Data binding
  • Advanced interactions
  • Animation
  • Collaboration
  • Cloud sharing
  • Device testing
  • Code export

What people use each for

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

HTMX

  • Building interactive applications without JavaScript framework complexitynot ProtoPie
  • Server-rendered applications requiring dynamic updatesnot ProtoPie
  • Adding interactivity to existing server-side applicationsnot ProtoPie
  • Hypermedia-driven applications using HTML-first approachesnot ProtoPie

ProtoPie

  • Interactive prototype designnot HTMX
  • User testing and handoff managementnot HTMX
  • Team design collaborationnot HTMX

Where each one falls short

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

HTMX

  • Best suited for server-rendered architectures, not pure client-side SPAs
  • Limited client-side state management capabilities compared to frameworks
  • Smaller ecosystem with fewer third-party libraries and tools
  • Learning curve for developers from JavaScript framework backgrounds

ProtoPie

  • The free plan allows 2 prototypes, 8 scenes per prototype and 50MB of cloud storage
  • Free prototypes carry a watermark and shareable links require the Basic plan
  • Saving prototypes locally requires the Pro plan
  • Team libraries and handoff recordings require the Pro plan
  • Basic caps storage at 500MB and prototypes at 20
  • Single sign on, private servers, custom fonts and custom hardware integrations are Enterprise only
  • Enterprise requires a minimum of 3 seats and is priced by quote
  • Connect Core is a paid add on at $20 per user per month

Pricing, plan by plan

HTMX

Free

No published plan breakdown. See the HTMX review.

ProtoPie

Free
  • FreeFree
    • 2 prototypes
    • 8 scenes per prototype
    • 50MB cloud storage
  • Basic$25/month
    • 20 prototypes
    • 10 scenes per prototype
    • 500MB storage
  • Pro$47/month
    • Unlimited prototypes
    • Unlimited handoff recordings
    • 5GB team storage

Which should you pick?

Choose HTMX if

  • You need ajax requests.
  • You want to start without paying.
  • You also want http verb support.
HTMX review

Choose ProtoPie if

  • You need interactive prototyping.
  • You want to start without paying.
  • You work on Windows, Macos, Web, Ios, Android.
  • You also want data binding.
ProtoPie review

Questions people ask

Is HTMX or ProtoPie better?
Neither clearly leads. HTMX starts at Free and ProtoPie at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, HTMX or ProtoPie?
HTMX starts at Free and ProtoPie at Free.
Does HTMX or ProtoPie run on more platforms?
HTMX runs on Web. ProtoPie runs on Windows, Macos, Web, Ios, Android.
Can I use HTMX for free?
Both have a free tier, so you can try either at no cost before committing.
What is HTMX best used for?
HTMX is most often used for building interactive applications without javascript framework complexity, server-rendered applications requiring dynamic updates, adding interactivity to existing server-side applications, hypermedia-driven applications using html-first approaches. Of those, building interactive applications without javascript framework complexity and server-rendered applications requiring dynamic updates are not what ProtoPie is typically brought in for.
What can HTMX do that ProtoPie cannot?
HTMX covers AJAX requests, HTTP verb support, DOM targeting, Swap strategies. ProtoPie covers Interactive prototyping, Data binding, Advanced interactions, Animation.

Answered from the vendors’ own pages

HTMX: How big is the HTMX JavaScript library?

HTMX is only 16 kilobytes minified and gzipped with zero external dependencies.

Source
ProtoPie: How much does ProtoPie cost?

ProtoPie offers a free plan ($0/month), Basic at $25/month, and Pro at $47/month per editor. Annual billing offers up to 26% savings. Enterprise pricing is custom for minimum 3 seats.

Source
HTMX: Can HTMX work with JSON APIs?

While HTMX is optimized for HTML responses, it can work with JSON through additional configuration and response handling.

Source
ProtoPie: Is there a free version of ProtoPie?

Yes. The free plan includes 2 prototypes, 8 scenes per prototype, and 50MB cloud storage. Perfect for trying the platform.

Source
HTMX: Does HTMX support real-time features like WebSockets?

Yes, HTMX includes support for WebSockets and server-sent events for real-time bidirectional communication.

Source
ProtoPie: What is included in the Pro plan?

Pro plan at $47/month includes unlimited prototypes, unlimited handoff recordings, 5GB team storage, local saving, and team libraries per editor.

Source
ProtoPie: What add-on products does ProtoPie offer?

Connect Core ($20/month per user), Connect Enterprise and Connect Embedded (custom pricing), and User Testing (custom pricing, annual-only for Pro plan users).

Source
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