TopicRadar
Track trending topics across HN, GitHub, ArXiv, and more
Details
- External ID
- 46692347
- Source
- HN
- Company
- —
- Product
- TopicRadar
- Website domain
- apify.com
- Launched
- Jan. 20, 2026
- Cohort
- —
- Upvotes
- 36
- Upvotes percentile
- 0.7424242424242424
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
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!
Enrichment
- Theme
- Hacker News clients, datasets, and tools
- Vertical
- Horizontal
- Function
- Analytics & BI
- Audience
- B2C
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- trending topic tracking across platforms
- Manually corrected
- False
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 — 89 launches clear the similarity bar, closest 8 shown.
Attention rank: #30 of 90 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 75 days after the earliest competitor.
- Hackobar · hn · 2026-05-25 · 5 upvotes · similarity 0.50
- Track trending GitHub repos on HN · hn · 2026-06-15 · 6 upvotes · similarity 0.50
- Latent Signal · hn · 2026-01-01 · 5 upvotes · similarity 0.48
- Hacker Atlas · hn · 2026-09-25 · 86 upvotes · similarity 0.44
- 20 years of Hacker News discussions, clustered and visualized · hn · 2026-03-22 · 7 upvotes · similarity 0.44
- TrendingBrew · ph · 2026-09-30 · 1 upvotes · similarity 0.42
- Hacker News with AI stories filtered out · hn · 2026-08-03 · 52 upvotes · similarity 0.41
- A self-hosted AI that turns Hacker News into a daily briefing · hn · 2026-07-19 · 5 upvotes · similarity 0.41
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a analytics & bi tool for Legal yet.