
JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
A front end web development playground.

Landlord Studio
Landlord Vision
PaTMa
August App
The only UK property management platform that builds your legal evidence trail automatically. Contracts, inspections, rent records and dispute packs.

Which is more popular?
Based on our record, CodePen seems to be more popular. It has been mentioned 513 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | codepen.io | letsorted.co.uk |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from the United Kingdom · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of CodePen yet.
LetSorted is property management software built for UK self-managing landlords with 1–5 properties — the 1.4 million people who manage their rentals independently, without a letting agent. Most landlords still rely on spreadsheets, folders and WhatsApp. LetSorted replaces all of that with a...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
What Is Codepen?
More videos
No LetSorted videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CodePen and LetSorted.
LetSorted's answer:
LetSorted is the only property management tool built specifically for UK self-managing landlords that automatically builds a court-ready evidence trail as you manage. Every inspection is signed by both parties, every maintenance request is timestamped, every rent payment is logged — so if a tenancy goes wrong, your evidence is already there.
LetSorted's answer:
Most UK landlord software focuses on accounting and rent tracking. LetSorted covers the full tenancy lifecycle — from AI-powered tenant screening to move-in inspections, periodic checks, maintenance logs, and a one-click Dispute Evidence Pack. It's also the only tool built around the Renters' Rights Act 2025, with RRA-compliant contracts and Section 8 evidence support built in.
LetSorted's answer:
UK self-managing landlords with 1–5 properties who currently juggle spreadsheets, folders, and WhatsApp. They don't want to hire a letting agent, but they do want to stay compliant and protected — especially after Section 21 abolition.
LetSorted's answer:
The founder moved to the UK in 2022 and spent two weeks navigating paper forms and photocopied contracts just to rent a house. Three years later, researching buy-to-let investment, he couldn't find software that would protect a small landlord under the new Renters' Rights Act. So he built it — first for himself, then for everyone.
LetSorted's answer:
Next.js, TypeScript, PostgreSQL (Supabase), Prisma, Stripe, Resend, Claude AI (Anthropic), pdf-lib, Tailwind CSS. Hosted on Vercel with EU-based data storage.
LetSorted's answer:
Early stage, currently onboarding first users via Product Hunt launch.
Share your experience with using CodePen and LetSorted. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codepen is a social network for developers to show off their work, ask and answer questions, and exchange ideas. It's like a Reddit for coding and design, with a large community of talented web developers.
Codepen is a social development environment that allows developers to showcase their work and experiment with HTML, CSS, and JavaScript in a collaborative space. Codepen’s focus on visual and interactive development...
Codepen is a social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn.
We have no reviews of LetSorted yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


> I vividly remember IE and many hacks to have css elements properly working in it… The common advice now is to only use CSS that is supported in the last two major versions of each major browser. You can check any css property's support... - Source: Hacker News / about 2 months ago
Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / 3 months ago
Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 12 months ago
Tracking LetSorted since Mar 2026.
When comparing CodePen and LetSorted, you can also consider the following products.

Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
Compare JSFiddle to CodePen or LetSorted:

Landlord Studio is a property management app built by landlords for landlords. Keep track of rent payments and expenses, generate professional reports for your accountant, automate reminders and invoices and more!
Compare Landlord Studio to CodePen or LetSorted:


Landlord Vision is a website that provides property management and accounting tools, making the residential landlords keep the records of their property in a decent manner.
Compare Landlord Vision to CodePen or LetSorted:

Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Compare GitHub to CodePen or LetSorted:

PaTMa is a cloud-based software & tool that offers one of the best property management software for smart UK landlords, making them easily track their properties, tenancies, tenants, repairs, rent, mortgage payments, and safety certificates or docum…
Compare PaTMa to CodePen or LetSorted: