Software Alternatives, Accelerators & Startups

Observable VS Svelte

Compare Observable VS Svelte and see what are their differences

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Observable logo Observable

Interactive code examples/posts

Svelte logo Svelte

Cybernetically enhanced web apps
  • Observable Landing page
    Landing page //
    2023-10-09
  • Svelte Landing page
    Landing page //
    2023-07-27

We recommend LibHunt Svelte for discovery and comparisons of trending Svelte projects.

Observable features and specs

  • Collaborative Environment
    Observable allows multiple users to collaborate in real-time, making it easier for teams to work together on data visualizations and analyses.
  • Reactive Programming
    The platform supports reactive programming, where changes in data automatically trigger updates in the visualizations, enhancing interactivity and reducing the need for manual updates.
  • Built-in Data Visualization Libraries
    Observable integrates seamlessly with popular libraries like D3, Plotly, and Leaflet, providing powerful tools for creating complex and interactive data visualizations.
  • Notebook Interface
    The notebook interface is user-friendly and allows for easy documentation and sharing. Users can combine code, visualizations, and markdown text in a single document.
  • Extensive Resources and Community Support
    Observable has a rich set of tutorials, examples, and a strong community, making it easier for new users to learn and get help.
  • Customizability
    Users have the flexibility to customize their visualizations extensively, thanks to the open-ended nature of JavaScript and the supported libraries.

Possible disadvantages of Observable

  • Steeper Learning Curve for Beginners
    New users, especially those without a background in JavaScript, might find the platform challenging to learn compared to more specialized data visualization tools.
  • Performance Issues
    For very large datasets or highly complex visualizations, performance can become an issue, potentially leading to slow rendering times.
  • Dependency on Internet Connection
    Observable notebooks currently require an internet connection to run, which can be a limitation for users needing offline access.
  • Limited Integration with Other Tools
    While Observable is powerful, its integration with other enterprise tools and platforms is somewhat limited compared to more established data analysis tools.
  • Subscription Costs
    Access to some of Observable's more advanced features requires a paid subscription, which might be a barrier for individual users or small teams with limited budgets.

Svelte features and specs

  • Performance
    Svelte shifts much of the work from runtime to compile time, resulting in faster and more efficient web applications. By compiling components to highly optimized vanilla JavaScript, it reduces the overhead and boosts performance.
  • File Size
    Due to its compile-time nature, Svelte produces smaller bundle sizes compared to other frontend frameworks like React or Angular, which can significantly improve load times and performance.
  • Simplicity
    The framework is designed to be more accessible and easier to understand. Svelte’s syntax is clean and straightforward, allowing developers to get up and running quickly with minimal boilerplate.
  • Reactivity
    Svelte provides a simple and intuitive way to handle reactivity by using built-in language constructs like assignments. This means no complicated state management libraries are necessary for many use cases.
  • Less Boilerplate
    Svelte reduces the boilerplate code typically required in other frameworks, resulting in a cleaner and more maintainable codebase. This can help accelerate development and reduce bugs.
  • Reactive Programming
    SvelteKit leverages Svelte's reactive programming model, allowing developers to write less code while achieving better functionality through automatic reactivity.
  • Integrated Router
    SvelteKit includes a built-in router, which simplifies the creation of multi-page applications and enables easy setup of dynamic routes.
  • SSR and SSG
    SvelteKit supports Server-Side Rendering (SSR) and Static Site Generation (SSG) out of the box, giving developers flexibility in how they build and deploy their applications.
  • Opinionated but Flexible
    While SvelteKit provides an opinionated setup to streamline the development process, it also allows for customization to fit a developer’s specific needs.

Possible disadvantages of Svelte

  • Ecosystem Maturity
    Svelte’s ecosystem is not as mature or extensive as React’s or Angular’s. There are fewer third-party libraries, tools, and resources available, which might make it more challenging to find solutions for less common problems.
  • Learning Curve
    While Svelte itself is simpler, its approach is quite different from traditional frameworks like React and Angular. This can require a mental shift and time to learn new paradigms, especially for developers coming from those backgrounds.
  • Community Support
    Given that Svelte has a smaller user base and community compared to more established frameworks, finding community support, tutorials, and best practices can sometimes be more difficult.
  • Tooling
    While Svelte has good official tooling and support, it may lack some of the advanced tools and integrations available for other frameworks, which can slow down development for more complex applications.
  • SEO and SSR
    Although Svelte has options for server-side rendering (SSR) and improving SEO, handling these aspects is not as out-of-the-box or mature compared to frameworks like Next.js for React.
  • Community Size
    SvelteKit has a smaller community compared to other frameworks, which can affect the availability of online resources, tutorials, and community-driven support.
  • Tooling and Integration
    Some commonly used development tools and integrations may not be fully compatible with SvelteKit, necessitating workarounds or additional configuration.
  • Frequent Updates
    As a newer framework, SvelteKit undergoes frequent updates and changes, which can sometimes lead to breaking changes or require developers to frequently update their knowledge and projects.
  • Market Adoption
    SvelteKit is less adopted in the industry compared to other frameworks, which might make it a less attractive option for companies looking for widely recognized and vetted solutions.

Observable videos

Observable Overview

More videos:

  • Review - observablehq.com review observable hq data analysis
  • Review - Hands-on Data Visualization with Observable Plot

Svelte videos

SvelteKit Breaking Changes 2022 - My Reactions and What You Need to Know!

More videos:

  • Review - Svelte vs React vs Angular vs Vue
  • Tutorial - SvelteKit Crash Course Tutorial #1 - What is SvelteKit?
  • Review - Why Svelte is the best JS "framework"
  • Review - Oh crap, here comes *another* JavaScript framework || SVELTE || Sveltejs

Category Popularity

0-100% (relative to Observable and Svelte)
Data Visualization
100 100%
0% 0
Javascript UI Libraries
0 0%
100% 100
Data Dashboard
100 100%
0% 0
JavaScript Framework
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Observable and Svelte

Observable Reviews

Top 10 Grafana Alternatives in 2024
Observable is a Grafana alternative that enables users to visualize data via charts and dashboards using code.
Source: middleware.io
Embedded analytics in B2B SaaS: A comparison
A few options were disregarded from the start due to a hefty price tag, these were Looker, Tableau, Power BI, GoodData. A few options like Trevor.io, Preset, Observable were disregarded as they did not seem to fit our criteria (based on the evaluation matrix).
Source: medium.com

Svelte Reviews

Top JavaScript Frameworks in 2025
SvelteJS is a modern JavaScript framework that is useful for building static web apps that are fast, lean, and fun. You can use Svelte to build single, reusable components and large or even small-scale projects. Svelte has started gaining attention because of its ability to produce smaller code bundles that run faster in web browsers.
Source: solguruz.com
Top 10 Next.js Alternatives You Can Try
This web development framework can help you perform the easiest tasks to develop the interface components that users can interact with within their browsers, such as the comment section. Moreover, it has SvelteKit to render the components of the entire page with best practices and developments. You can utilize this platform effortlessly to add basic functionalities and...
20 Next.js Alternatives Worth Considering
Cruise into the Svelte ecosystem with Sapper, a framework that takes all the brilliance of Svelte and dials it up for app building. It’s like Svelte’s outgoing cousin, optimizing for an even smoother ride from development to go-live.
10 Best Next.js Alternatives to Consider Today
SvelteKit, the official framework for Svelte, streamlines the development of Svelte applications. With an intuitive API, SvelteKit simplifies the creation of server-side rendered (SSR) and statically generated (SSG) applications while retaining the reactive nature that makes Svelte unique. If you're seeking a framework that marries simplicity with powerful capabilities,...
The 20 Best Laravel Alternatives for Web Development
The next of these Laravel alternatives is Svelte. It cuts through the complexity, snipping off any excess, pre-compiling its magic to keep your app lightweight without shedding any muscle. The end result? Lightning strikes in web performance.

Social recommendations and mentions

Svelte might be a bit more popular than Observable. We know about 389 links to it since March 2021 and only 312 links to Observable. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Observable mentions (312)

  • Apache ECharts
    "Observable is obnoxious if you want to add a D3 pie chart to your Vue application and have to untangle calls to D3’s API from reactive cell values, which look like ordinary JavaScript, but are not, and will cause compilation and runtime errors when copied." Yep - as I wrote: "If you want to just blindly copy and paste d3 code, you may have issues with the docs being hosted on observable." If instead you learn the... - Source: Hacker News / about 1 month ago
  • Natural occurring molecule rivals Ozempic in weight loss, sidesteps side effects
    I'd imagine many nested named capturing groups may trip even the best automated system! I do like the solution though. I would've probably approached it differently, trying to first get the 'inverted' match (i.e. Not matching anything that isn't a currency like pattern) and refine from there. A bit like this one I did a while back, to parse garbled strings that may occur after OCR [0]. I imagine the approach does... - Source: Hacker News / 2 months ago
  • Visualizing Data Is an Art – We Should Treat It Like One
    Was looking for some mention of Mike Bostock and his epic odyssey into this space. For those who aren't familiar https://observablehq.com/@mbostock. - Source: Hacker News / 3 months ago
  • Ohm: A user-friendly parsing toolkit for JavaScript and TypeScript
    I experimented with an Ohm/CodeMirror bridge that would map an Ohm grammar to CodeMirror classes for marks and syntax highlighting. It might be an interesting starting point for you: https://observablehq.com/@ajbouh/editor. - Source: Hacker News / 3 months ago
  • WebGL Fluid Simulation
    I have a fork of this that inverts the light model from additive to subtractive and suddenly its like ink in water https://observablehq.com/@tomlarkworthy/ink. - Source: Hacker News / 4 months ago
View more

Svelte mentions (389)

  • Plain Vanilla Web – Guide for de-frameworking yourself
    In theory, “de-frameworking yourself” is cool, but in practice, it’ll just lead to you building what effectively is your own ad hoc less battle-tested, probably less secure, and likely less performant de facto framework. I’m not convinced it’s worth it. If you want something à la KISS[0][0], just use Svelte/SvelteKit[1][1]. Nowadays, the primary exception I see to my point here is if your goal is to better... - Source: Hacker News / about 12 hours ago
  • Why I’m Learning Vue.js After Six Years in React
    When I teased this series on LinkedIn, one comment quipped that Vue’s been around since 2014—“you should’ve learned it by now!”—and they’re not wrong. The JS ecosystem churns out UI libraries like Svelte, Solid, RxJS, and more, each pushing reactivity forward. React’s ubiquity made it my go-to for stability and career momentum. Now I’m ready to revisit new patterns and sharpen my tool-belt. - Source: dev.to / 1 day ago
  • Hyper – Outperform React on every metric
    What is the advantage over Svelte (https://svelte.dev/)? Especially since Svelte is already established and has an ecosystem. - Source: Hacker News / 6 days ago
  • SVQK - A Web Application Development Platform Using Svelte + Quarkus
    At Project Au Lait, we are developing and publishing an open-source asset called SVQK, which combines Svelte (Frontend) and Quarkus (Backend) for web application development. The asset includes automated testing tools and source code generation tools. This article introduces an overview of SVQK. (For instructions on how to use SVQK, refer to the Quick Start.). - Source: dev.to / 20 days ago
  • Why Svelte Might Be the Best Framework You Haven't Tried Yet 🚀
    Embrace the Ecosystem: Explore tools like SvelteKit for full-fledged app development. - Source: dev.to / 3 months ago
View more

What are some alternatives?

When comparing Observable and Svelte, you can also consider the following products

D3.js - D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS.

React - A JavaScript library for building user interfaces

RunKit - RunKit notebooks are interactive javascript playgrounds connected to a complete node environment right in your browser. Every npm module pre-installed.

Vue.js - Reactive Components for Modern Web Interfaces

Vega-Lite - High-level grammar of interactive graphics

Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.