TopicRadar
Track trending topics across HN, GitHub, ArXiv, and more
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Hey HN! I built TopicRadar to solve a problem I had with staying on top of what's trending in AI/ML without checking 7+ sites daily.https://apify.com/mick-johnson/topic-radarWhat it does: - Aggregates from HackerNews, GitHub, arXiv, StackOverflow, Lobste.rs, Papers with Code, and Semantic Scholar - One-click presets: "Trending: AI & ML", "Trending: Startups", "Trending: Developer Tools" - Or track custom topics (e.g., "rust async", "transformer models") - Gets 150-175 results in under 5 minutesBuilt for the Apify $1M Challenge. It's free to try – just hit "Try for free" and use the default "AI & ML" preset.Would love feedback on what sources to add next or features you'd find useful!
HN · launched Jan 20, 2026 · 36 upvotes (top 26%) · 0 views
Niche: news aggregation platforms · 244 launches, 12 in the last 7 days ▼ -54% · Explore this niche →
Category and tags
- Horizontal
- Analytics & BI
- B2B
- Not AI
- Commercial product
Visit website ↗ Source listing ↗
More like this: all 244 launches in news aggregation platforms →
Could you build this?
Yes It is an Apify scraper/aggregator fetching public APIs and feeds (HN, GitHub, arXiv, Lobste.rs) and presenting or exporting the trending topics. A solo developer can vibe-code this using standard API calls and basic text aggregation in days.
Discussion
12 comments analyzed.
Competitors mentioned: Nitter (Twitter alternative), Apify, Reddit, Twitter, Hacker News
Concerns raised: Generating RSS feeds for sites without native RSS endpoints (Twitter, YouTube), How content classification into topics is performed, Closed source project with limited support, Tracking topics across different sites creates complexity, Privacy concerns with 25 trackers blocked
Feature requests: Support Reddit and Twitter sources, General-purpose search across Reddit/Twitter, Hourly update frequency, Include Reddit's recent database
Competitors
Other products that read as similar to this one : 187 launches clear the similarity bar, closest 8 shown.
Attention rank: #59 of 188 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 75 days after the earliest competitor.
- HypeBeam · ph · 2026-10-24 · 2 upvotes · similarity 0.52
- Hackobar · hn · 2026-05-25 · 5 upvotes · similarity 0.52
- Track trending GitHub repos on HN · hn · 2026-06-15 · 6 upvotes · similarity 0.50
- Latent Signal · hn · 2026-01-01 · 5 upvotes · similarity 0.49
- github-trending-tracking · github · 2026-10-27 · 22 upvotes · similarity 0.49
- Standard Topic · ph · 2026-10-20 · 1 upvotes · similarity 0.46
- 20 years of Hacker News discussions, clustered and visualized · hn · 2026-03-22 · 7 upvotes · similarity 0.45
- Standard Topic · hn · 2026-10-20 · 5 upvotes · similarity 0.45
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.