Exploding Topics
A trend-discovery product that combines algorithmic detection with analyst review, then organizes topics, search history, related signals, projects, reports, and API access.
An Exploding Topics alternative built around the source trail
Exploding Topics packages emerging-topic discovery into a curated database with product research tools. What's Happening takes a narrower approach for technology signals: make the observations and score logic inspectable.
Inspect our scoring methodQuick answer
Pick the evidence model before the tool.
Choose Exploding Topics when you need a prepared discovery database and broad ongoing research workflow. Choose What's Happening when direct source links and published score weights matter more than breadth. Its live feed publishes up to 100 source-backed AI trends, with verified email signup and Google sign-in.
Reviewed against first-party product sources on 21 August 2026
At a glance
Two different research jobs.
This page compares the workflow each product is built around. It does not claim feature parity.
What's Happening
An early-access approach designed to cluster official Hacker News, GitHub, and Google Trends RSS observations, expose the source trail, and publish its 45/35/20 scoring method.
Decision table
Six differences that change the choice.
Competitor claims come from first-party sources. What's Happening claims reflect its verified production state.
| Axis | Exploding Topics | What's Happening | What it means |
|---|---|---|---|
| Discovery model | Algorithmic detection plus human analyst review in a curated database. | Cluster official-source observations into inspectable technology trends. | Prepared research universe versus a narrower evidence-first system. |
| Primary evidence | Searches, conversations, mentions, and other web data described by the product. | Official Hacker News, GitHub, and Google Trends RSS observations by default. | Broad web discovery versus named source adapters. |
| Trend analysis | Search volume, growth history, status, related topics, and other product-defined signals. | A disclosed 45/35/20 score for velocity, reach, and novelty. | A broad research toolkit versus one inspectable ranking method. |
| Monitoring | Projects, alerts, reports, integrations, and API access are described by the product. | No production alerts today; verified email signup and Google sign-in are available. | Use Exploding Topics for an active monitoring workflow. |
| Evidence trail | Curated topic views connect metrics, related trends, and analysis. | Designed to preserve direct observation links, country tags, and a concise Why Layer. | Curated interpretation versus source-by-source inspection. |
| Current readiness | Established product with public and paid surfaces. | Live AI feed with up to 100 source-backed trends; verified email signup and Google sign-in. | Choose by research breadth and evidence needs. |
Swipe horizontally to inspect every column.
Our difference
The score keeps its receipts.
What's Happening is designed so a trend is not just a line moving up. The cluster retains the observations used to score it, the earliest usable country tag, and a short explanation of what changed.
That evidence path does not make the product a forecasting service, and it does not prove where an idea originated.
Hacker News
official API
GitHub
official search API
Google Trends
official RSS
Inspect the chain
Observation links → earliest country-tagged evidence → 45/35/20 score → concise Why Layer
Current production boundaries
The live AI feed and verified account paths are available.
Production publishes up to 100 source-backed AI trends. Email signup and Google sign-in are verified. Public research stays available at $0 without an account. Alerts and optional credentialed sources remain outside the default offer.
Best fit
Choose by the decision in front of you.
Exploding Topics
Use Exploding Topics when you want the product to surface and organize emerging categories before you have a precise query.
What's Happening
Use What's Happening when you want individual observations, country-tagged context, and score weights in one inspection path. It is a live early-access product with a narrower AI focus.
FAQ
The practical questions.
What is a good alternative to Exploding Topics?
Google Trends is useful for validating known search demand, while Glimpse adds search-volume and tracking workflows. What's Happening is designed for a narrower need: inspecting the source observations and score behind technology trends.
How is What's Happening different from Exploding Topics?
Exploding Topics describes a broad discovery system with algorithmic detection, analyst review, a trend database, reports, projects, alerts, and API access. What's Happening publishes a narrower source set and explicit velocity, reach, and novelty weights.
Does What's Happening predict which trends will grow?
No. Its breakout score is a watch signal based on observed velocity, reach, and novelty. It is not a forecast or a guarantee.
Can What's Happening replace Exploding Topics today?
It can support a live source-linked AI research workflow today. The feed and verified email or Google account paths work. It does not replace Exploding Topics' broader database, alerts, or paid research features.
Sources
First-party product evidence.
Product surfaces change. Re-check these links before making a high-stakes tooling decision.
- 01Exploding Topics methodology
First-party description of source breadth, algorithmic discovery, and analyst review.
- 02Exploding Topics research workflow
First-party detail on the database, search, meta trends, projects, alerts, reports, and API.
- 03What's Happening methodology
Official source adapters, score weights, country attribution, and current availability.
- 04What's Happening access
Current $0 public access and verified account paths are documented here.
Continue the research
How the signal engine worksInspect source coverage and score weights.Current accessCheck the public product state.ExploreInspect the live AI trend feed.Exploding Topics vs Google TrendsChoose between discovery and known-query validation.Exploding Topics vs GlimpseCompare curated discovery and search-depth workflows.