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AI-powered social listening that finds high-intent buyers on Reddit, HN, X & Bluesky

Eloquent JavaScript
JavaScript.com
Scrimba
React Tutorial
JavaScript Quiz
Free Code Camp
JavaScript Knowledge Map
Learn JavaScript with guided tests and flashcards
Which is more popular?
Based on our record, Learn JavaScript seems to be more popular. It has been mentioned 48 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | replygain.com | learnjavascript.online |
| Pricing | — | |
| Company | 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


ReplyGain is an AI-powered social listening tool built for SaaS founders and indie hackers. It scans Reddit, Hacker News, X (Twitter), and Bluesky to find posts where someone is actively asking for a product like yours. Instead of spending 3 hours/day scrolling Reddit, ReplyGain delivers ~50...
No description of Learn JavaScript 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.


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Why this product is good
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Learn JAVASCRIPT in just 5 MINUTES (2020)
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing ReplyGain and Learn JavaScript.
ReplyGain's answer
ReplyGain is the only social listening tool purpose-built for indie hackers and SaaS founders. Instead of tracking brand mentions like legacy tools, it finds posts where someone is actively asking for a product like yours, across Reddit, Hacker News, X, and Bluesky. Every lead gets an AI intent score (0-100), and you can generate natural-sounding replies with one click. Paste your URL and AI auto-generates keywords and subreddits to monitor, zero manual setup
ReplyGain's answer
Traditional social listening tools like Brand24 and Mention are built for enterprise brand monitoring, tracking who talks about you. ReplyGain flips that: it finds people already asking for what you built, even if they've never heard of you. It's built for founders, not marketing teams. The AI generates replies (not corporate-sounding AI slop), and pricing starts at $29/mo vs $100+/mo for competitors. Plus it covers Hacker News and Bluesky, which most competitors ignore entirely.
ReplyGain's answer
Indie hackers with SaaS products, startup founders (pre-Series A), solo founders managing multiple products, small agencies with 3-10 clients, and freelancers like SEO experts or designers. Anyone who needs to find potential customers on social platforms but doesn't have time to scroll Reddit for 3 hours a day.
ReplyGain's answer
ReplyGain was born from a founder's frustration with manually searching Reddit every day for potential customers. Scrolling through thousands of posts, most irrelevant, hoping to find the one person asking for exactly what you built, a 3-hour daily time sink. So we built an AI that does it in minutes: scans multiple platforms, scores posts for buying intent, and generates replies that actually sound human. What used to take 90 hours/month now takes 5.
ReplyGain's answer
ReplyGain primarily serves indie hackers and small SaaS founders. Our users include:
Solo founders building their first product Bootstrapped SaaS teams doing organic marketing Freelance marketers managing client lead generation Small agencies monitoring Reddit and HN for multiple clients
Share your experience with using ReplyGain and Learn JavaScript. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking ReplyGain since Jul 2026.
I haven't done this course, but I have been programming with Javascript for about ~1.5years and can build things with React, the best course I found, and I bet it would translate to angular, is learnjavascript.online. Another resource... Source: over 3 years ago
The Jad Joubran courses on the other hand really upped my skill level and helped me make the jump from passive learning, exercises and very small projects to making legitimate web apps. That was probably the biggest/scariest jump I've... Source: over 3 years ago
Hi everyone! I'm in the very early stages of creating an interactive course and I would like to hear your thoughts on them. So far I've come across Scrimba and Jad Joubran's learn X series of sites (learnjavascript.online,... Source: over 3 years ago
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