
stagetimer.io
Presentation Timer
Epic Timers
SessionPace
Tamora
UbiStage.de
Free Countdown Timer
Online Professional countdown timer, stopwatch, and event timer for presentations, meetings, conferences, classrooms, and workouts. Fullscreen display, real-time sync.
JSONFormatter.org
JSONLint
JSON Formatter & Validator
CodeBeautify
JSON Crack
FreeFormatter
10015.io
View, edit and format JSON online

Which is more popular?
Based on our record, JSON Editor Online seems to be more popular. It has been mentioned 23 times since March 2021.
Website, pricing, platforms and company facts side by side.
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JSO
JSON Editor Online
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| Website | eventtimer.io | jsoneditoronline.org |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

EventTimer is a free, browser based professional event timing solution built for anyone who runs events, presentations, classes, or live productions. It works instantly in the browser with no signup, no installation, and no credit card required. At its core, EventTimer offers three timer modes...
No description of JSON Editor Online yet.
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
No analysis of JSON Editor Online yet.
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing EventTimer.io and JSON Editor Online.
EventTimer.io's answer
Most countdown tools are either too basic (a single timer with no sharing) or too expensive for what they offer. EventTimer bridges that gap, it works instantly in the browser with zero signup, yet scales up to a full multi timer event manager with live synchronization across devices.
EventTimer.io's answer
EventTimer gives you professional event timing features at no additional cost. Compared to Stagetimer, the leading paid alternative, EventTimer is 55 to 60% cheaper while offering a far more generous free tier. You get live sync, shareable presenter and audience views, embeddable website countdowns, and a full event rundown manager. No installation, no plugins, just open a browser and go.
EventTimer.io's answer
Event organizers managing multi session agendas, educators who need classroom and exam timers, presenters keeping talks on schedule, fitness professionals running timed workouts, and livestream directors coordinating productions. It also serves anyone who just needs a quick, reliable countdown without downloading an app.
Share your experience with using EventTimer.io and JSON Editor Online. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking EventTimer.io since Apr 2026.
I love json tools, I use several like https://jsoneditoronline.org/. - Source: Hacker News / about 2 years ago
This error is harmless. However, your configuration file is malformed. What u/mart1d4 said is right that the custom settings are for custom games mode (not hard). Start with the default config. You can use: https://jsoneditoronline.org/... Source: over 3 years ago
Download the text file with curves from this thread: https://www.avsforum.com/threads/announcing-ratbuddyssey-a-tool-for-tweaking-audyssey-multeq-app-files.3006886/post-62226147Save your .ady file and open it here:... Source: over 3 years ago
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Remote-controlled Countdown Timer for Professional Event & Live Video Production
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Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
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Create a synchronized presentation timer room with host controls, a shareable speaker display, color warnings, and overtime tracking.
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JSON Lint is a web based validator and reformatter for JSON, a lightweight data-interchange format.
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Epic Timers: countdown or count-up on any phone, tablet, laptop, or TV, controlled from another. QR pairing, live sync, no accounts needed.
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The JSON Formatter was created to help with debugging.
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