Web Development · head to head
HTMX vs Linearity Curve

HTMX
Web Development
Lightweight JavaScript library enabling AJAX, WebSockets, and server-sent events in HTML
- From
- Free
- Rated
- -
The short version
- Each has a real cost: HTMX best suited for server-rendered architectures, not pure client-side SPAs; Linearity Curve limited to Apple ecosystem (Mac, iPad, iPhone) with no Windows or Linux support
- They diverge on capability: HTMX covers AJAX requests, Linearity Curve covers Vector editing.
Where they differ
Only the attributes on which HTMX and Linearity Curve actually diverge.
| Attribute | HTMX | Linearity Curve |
|---|---|---|
| Pricing model | open-source | Unknown |
| Platforms | Web | Mac, Ios |
| Category | Web Development | Design |
| Founded | Unknown | 2017 |
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 Linearity Curve
- Vector editing
- Auto Trace
- Typography tools
- Pen tool
- iCloud sync
- Adobe Creative Cloud
- Sketch
- Figma
What people use each for
The jobs each tool is most often brought in to do.
HTMX
- Building interactive applications without JavaScript framework complexitynot Linearity Curve
- Server-rendered applications requiring dynamic updatesnot Linearity Curve
- Adding interactivity to existing server-side applicationsnot Linearity Curve
- Hypermedia-driven applications using HTML-first approachesnot Linearity Curve
Linearity Curve
- Vector illustrationnot HTMX
- Logo designnot HTMX
- UI designnot HTMX
- Print designnot 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
Linearity Curve
- Limited to Apple ecosystem (Mac, iPad, iPhone) with no Windows or Linux support
- Requires annual or monthly subscription for commercial use, unlike competitors offering lifetime purchase options
- Free plan is severely limited to only 3 Curve files and 5GB storage
Pricing, plan by plan
HTMX
FreeNo published plan breakdown. See the HTMX review.
Linearity Curve
Free- StarterFree
- 50 lifetime credits
- 3 Curve files
- 5GB storage
- Pro$11.99/month
- 250 monthly credits
- Unlimited files
- 100GB storage
- Business$65/month
- 500 monthly credits
- 500GB storage
- Brand management
Which should you pick?
Choose HTMX if
- You need ajax requests.
- You want to start without paying.
- You also want http verb support.
Choose Linearity Curve if
- You need vector editing.
- You want to start without paying.
- You work on Mac, Ios.
- You also want auto trace.
Questions people ask
- Is HTMX or Linearity Curve better?
- Neither clearly leads. HTMX starts at Free and Linearity Curve at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, HTMX or Linearity Curve?
- HTMX starts at Free and Linearity Curve at Free.
- Does HTMX or Linearity Curve run on more platforms?
- HTMX runs on Web. Linearity Curve runs on Mac, Ios.
- 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 Linearity Curve is typically brought in for.
- What can HTMX do that Linearity Curve cannot?
- HTMX covers AJAX requests, HTTP verb support, DOM targeting, Swap strategies. Linearity Curve covers Vector editing, Auto Trace, Typography tools, Pen tool.
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.
SourceLinearity Curve: Does Linearity Curve have a free plan?
Yes, Linearity offers a free Starter plan with 50 lifetime credits, 1 basic brand kit, and 5GB cloud storage. No credit card is required to access the free tier.
SourceHTMX: Can HTMX work with JSON APIs?
While HTMX is optimized for HTML responses, it can work with JSON through additional configuration and response handling.
SourceLinearity Curve: Can I use Linearity Curve on multiple devices?
Yes, Linearity Curve is available on Mac, iPad, and iPhone, with real-time collaboration allowing teams to see changes instantly across devices.
SourceHTMX: Does HTMX support real-time features like WebSockets?
Yes, HTMX includes support for WebSockets and server-sent events for real-time bidirectional communication.
SourceLinearity Curve: What file formats can I export from Linearity Curve?
Linearity Curve supports exporting to industry-standard formats including .ai, SVG, PDF, PNG, JPG, and TIFF, making it compatible with other design tools.
SourceLinearity Curve: Does Linearity Curve have AI-powered vectorization?
Yes, Linearity Curve includes an Auto Trace feature with three modes (Sketch, Photography, Illustration) that uses AI to instantly vectorize images into editable paths. It also includes AI-powered background removal.
SourceRelated pages
More on Linearity Curve
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- Linearity Curve vs Next.js
- Linearity Curve vs Django
- Linearity Curve vs MySQL
- Linearity Curve vs Flask
- Linearity Curve vs React
- Linearity Curve vs Vue.js
- Linearity Curve vs Tailwind CSS
- Linearity Curve vs Docusaurus
- Linearity Curve vs Laravel
- Linearity Curve vs MUI
- Linearity Curve vs Nginx
- Linearity Curve vs Remix
- Linearity Curve vs esbuild
- Linearity Curve vs npm
- Linearity Curve vs SolidStart
- Linearity Curve vs TanStack Start
- Linearity Curve vs Alpine.js
- Linearity Curve vs Astro
- Linearity Curve vs Adobe Illustrator
- Linearity Curve vs Affinity Designer
- Linearity Curve vs Gravit Designer
- Linearity Curve vs Framer
- Linearity Curve vs Procreate
- Linearity Curve vs Krita
- Linearity Curve vs Inkscape
- Linearity Curve vs ProtoPie
- Linearity Curve vs Webflow
- Linearity Curve vs CorelDRAW Graphics Suite
- Linearity Curve vs Recraft
- Linearity Curve vs Xara Designer Pro+
- Linearity Curve vs ArtRage
- Linearity Curve vs Canva
- Linearity Curve vs Photopea
- Linearity Curve vs Playground AI
- Linearity Curve vs Procreate Dreams
- Linearity Curve vs Rebelle

