
CodePen
CodeSandbox
replit
Pastebin.com
JS Bin
VS Code
GitHub
Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

Autodesk BIM 360
Assemble
Synchro PRO
Touchplan
NPlan
DESTINI Estimator
Nektar Data
Automated project controls and schedule analytics powered by AI-enhanced Schedule Intelligence — built for contractors, owners, and developers.

Which is more popular?
Based on our record, JSFiddle seems to be more popular. It has been mentioned 204 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | jsfiddle.net | smartpm.com |
| Pricing | — | |
| Company | — | 2016 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of JSFiddle yet.
SmartPM is an AI-augmented Automated Project Controls™ and Schedule Analytics platform purpose-built for the commercial construction industry. Powered by its Schedule Intelligence technology, SmartPM ingests native project schedule files (.xer, .xml from Oracle Primavera P6, .mpp from Microsoft...
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 SmartPM yet.
Walkthroughs and reviews on video.
Dashboard JSFiddle Online JavaScript Editor jQuery, Angular, Backbone, Underscore, Knockout, Y
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing JSFiddle and SmartPM.
SmartPM's answer:
SmartPM was founded by Mike Pink, a forensic delay analyst who spent 20+ years manually analyzing hundreds of complex construction schedules for disputes and claims work on projects like nuclear power plants and wastewater treatment facilities. That manual process was slow and painstaking, so he built software to automate the analysis he'd been doing by hand for weeks or months at a time. Because the underlying problem was complex, SmartPM's earliest customers were the most sophisticated project controls teams in the industry, and the platform grew from there. Today SmartPM serves both those advanced teams through SmartPM Controls and mid-market GCs newer to schedule analytics through SmartPM Essentials, with the goal of letting a smaller contractor operate with the same rigor as an ENR Top 50 company.
SmartPM's answer:
SmartPM is built on a proprietary CPM engine rather than a visualization layer, which means it independently recalculates and analyzes the schedule logic instead of just displaying data pulled from Primavera P6 or MS Project. That engine powers 35+ schedule quality metrics, including the DCMA 14-point check, and produces forensic-grade delay analysis that can hold up in claims and litigation. SmartPM was founded by a delay analyst with 20+ years of forensic experience, so the platform reflects patterns learned from analyzing thousands of real construction schedules rather than a generic data science approach applied to construction after the fact. It also holds FedRAMP High authorization, a rare distinction in construction technology that matters for government and federal agency work. SmartPM sits on top of existing scheduling tools like P6, MS Project, and Phoenix; it doesn't replace them, it makes the schedules already being built more useful.
SmartPM's answer:
SmartPM is chosen because its analysis comes from a real forensic delay analyst's methodology, not a generic algorithm retrofitted for construction. More than half of the ENR Top 50 and a large share of the ENR Top 100 already use the platform, which makes it a low-risk, credible choice for project controls teams. The proprietary CPM engine independently analyzes schedule logic rather than just visualizing existing data, which is what makes SmartPM's output defensible enough to use in delay claims and disputes. SmartPM also offers two tiers: Essentials for teams new to schedule analytics who want a simple, portfolio-wide view, and Controls for teams that need deep forensic drill-down. That range means a mid-market GC can get started without being locked out of the more advanced capabilities an ENR Top 100 project controls team relies on.
SmartPM's answer:
SmartPM's primary audience is general contractors, particularly ENR Top 400 firms and mid-market GCs running $50M+ in annual construction volume across commercial, healthcare, education, multifamily, data center, and industrial projects. Within these firms, the platform is used by VPs of Operations, project controls managers and teams, scheduling teams, project executives, and CFOs who need visibility into schedule health and margin risk. A growing second audience is owners and developers, including real estate developers, school and hospital systems, universities, and government agencies, who use SmartPM to verify contractor schedules and get visibility they wouldn't otherwise have. A smaller audience is forensic consultants and owner's representatives at large firms who need defensible, court-ready delay analysis without doing it manually.
SmartPM's answer:
SmartPM is built around a proprietary CPM (Critical Path Method) engine that independently processes and recalculates schedule logic rather than simply rendering data from source files. The platform integrates with the scheduling and project management tools contractors already use, including Primavera P6, MS Project, Phoenix, Procore, Autodesk, Power Project, CMiC, and Power BI. It holds FedRAMP High authorization, which reflects a security and compliance architecture built to federal standards.
Share your experience with using JSFiddle and SmartPM. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Test your javascript, CSS, HTML or coffeescript online with jsfiddle code editor. Jsfiddle – code playground.
JSFiddle cannot be used to host code on your server. The code has to be on JSFiddle and is public all the time.
What is missing from JSFiddle is live previews. You have to basically refresh the page by clicking on the play button. And compared to other playgrounds, JSFiddle is probably the slowest. Another slightly frustrating...
We have no reviews of SmartPM yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Https://jsfiddle.net/ used to be also very popular, I see that it is still available, but haven't used it in a while. Which other alternatives do people use now days? - Source: Hacker News / 2 months ago
Coding is like learning a new language—you must practice by writing code, not just reading about it. Use free online editors like CodePen, JSFiddle, or Replit to experiment. - Source: dev.to / about 1 year ago
As you embark on these projects, take your time to familiarize yourself with HTML tags and CSS properties. Use online tools like CodePen or JSFiddle to experiment with your code and visualize your results. - Source: dev.to / over 1 year ago
Tracking SmartPM since Aug 2026.
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