
10015.io
Bitty Coder
CodeSwissKnife
ToolKitKE
devtoolz.dev
Code Beautify JSON Validator
FreeFormatter
Free online tools: JSON formatter, password generator, QR code maker, calculators, converters and more. Fast, private, no login — everything runs in your browser.

Duet Display
iDisplay
Air Display
Splashtop Wired XDisplay
Superbrush
TwomonUSB
Astropad
spacedesk expands the Windows desktop computer screen to other computers over the local area...

Which is more popular?
Based on our record, spacedesk seems to be more popular. It has been mentioned 19 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codekithub.com | spacedesk.net |
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What each product offers, as listed by its team.


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


No analysis of CodeKitHub yet.
Overall verdict
Why this product is good
Recommended for
Spacedesk is recommended for professionals who require additional screen space for productivity, such as graphic designers, programmers, or video editors. It's also beneficial for educators and presenters who need to share their screen with an audience. Casual users who enjoy multitasking or need a makeshift second monitor at home would also find it useful.
Walkthroughs and reviews on video.
No CodeKitHub videos yet. You could help us improve this page by suggesting one.
SpaceDesk - Free second monitor app
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CodeKitHub and spacedesk.
CodeKitHub's answer
CodeKitHub's answer
Compared to single-purpose sites like JSONFormatter.org or CodeBeautify that only handle one task, CodeKitHub covers the same ground plus image, PDF, QR, and calculator tools in one place — useful if you regularly switch between different tool types during a workday.
Unlike FreeFormatter (which recently shut down its service), CodeKitHub's tools require no backend at all — everything runs as static, client-side JavaScript, so there's no server cost pressure driving ads, paywalls, or future shutdowns of the kind that killed similar sites.
If you need a tool site in a language other than English — Spanish, French, German, Japanese, Korean, Chinese, and others — CodeKitHub is one of the few free tool sites that actually localizes the full interface rather than just running it through machine translation on top of an English-only tool.
CodeKitHub's answer
CodeKitHub serves two overlapping groups:
Traffic data shows both groups in practice: technical tools (QR generator/decoder, Base64 encoder, JSON tools) draw developer-heavy referral sources like Hacker News and ChatGPT, alongside broader organic search traffic for everyday utility tasks.
CodeKitHub's answer
CodeKitHub started as a small set of browser-based developer utilities and grew into a 120+ tool collection covering JSON formatting, encoding, image/PDF processing, calculators and more. The core principle from the start was that every tool should run entirely client-side — no backend, no data leaving the user's browser — which keeps the tools fast, private, and cheap enough to run without ads getting in the way. The site has since expanded to 13 languages to serve users beyond English-speaking markets.
CodeKitHub's answer
Share your experience with using CodeKitHub and spacedesk. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of CodeKitHub yet. Be the first one to post
Like Duet Display, SpaceDesk is one of the most popular multi-monitor applications on the market. The main difference is that SpaceDesk is specifically designed to run smoothly on Windows devices. This means you’ll be...
These are some of the top Spacedesk alternatives recommended by us. You can check them out and decide which one suits you the best. Each of these alternatives has their unique set of features. If we have missed out on...
It is a well-known software operating since the time of SpaceDesk. Duet Display has advanced features that make it a perfect alternative for SpaceDesk. Previously the software was only compatible with iPads and...
Recommendations tracked on public social media and blogs since March 2021.


Tracking CodeKitHub since Jul 2026.
Spacedesk but you have to change the settings on the tablet app to what resolution you want it to be. Source: about 4 years ago
See also https://spacedesk.net/. Sadly Windows-host-only, but works pretty well, and anything with a browser in the same LAN can be a screen. - Source: Hacker News / over 4 years ago
Spacedesk.net is a small application running on Windows allowing you to create virtual screens accessible on mobile devices or in a browser over the local network or wifi. Source: almost 5 years ago
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With Duet Display, you can transform your iPhone or iPad into a second display to expand the screen space of your PC or Mac system.
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Fast developer tools that process your input locally in your browser. No account required.
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iDisplay is an app that turns a mobile device into a secondary desktop monitor. The app currently supports iOS, Android, Windows and MacOS, and it lets users connect a desktop computer to a mobile device over WiFi. Read more about iDisplay.
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Feature-packed developer toolkit. Includes text conversion, encoding, UUID generation, cryptography, color conversion, JSON/XML formatting, and more for simplified, efficient development tasks without online data transmission.
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Air Display allows extra screens to extend the display size of a Mac desktop. The company behind the product is Avatron Software, which was founded in 2008. Read more about Air Display.
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