Horizon
Open-source AI news aggregator with daily bilingual briefings
Horizon is a solid open-source project for developers who want a customizable, AI-filtered news aggregator with a strong community signal. The community-driven approach adds valuable curation, but the lack of a mobile app and non-trivial setup may deter casual users. If you want a turnkey mobile app with push notifications, consider Feedly or Inoreader instead.
- Developers looking for an open-source news aggregator
- Tech enthusiasts who want daily curated briefings
- Researchers needing a customizable AI-filtered news feed
- Bilingual users who prefer English & Chinese summaries
- Users seeking a polished, mobile-friendly app
- People who want a fully automated, no-setup solution
- Enterprise teams requiring dedicated support and SLAs
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Skip Horizon if you need a mobile app with push notifications, a no-setup news reader, or dedicated enterprise support.
There are no direct monetary costs since Horizon is free and open-source, but you will need to provide your own AI API key (e.g., OpenAI or Anthropic) to run the scoring model, which can incur usage charges.
Horizon is free and open-source, making it ideal for individual developers and small teams who want full control over their news aggregation without per-seat fees. Unlike Feedly Pro ($8/mo or more) or Inoreader's paid plans, Horizon's only cost is your own infrastructure and AI API usage.
In short
Horizon — Open-source AI news aggregator with daily bilingual briefings. Best for Developers looking for an open-source news aggregator, Tech enthusiasts who want daily curated briefings, Researchers needing a customizable AI-filtered news feed. Free to use.
Viability Score
How likely is Horizon to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Key Features
- AI-powered daily briefings in English & Chinese
- Customizable source selection by category
- Community-curated source list with voting
- Open-source codebase (7.9K GitHub stars)
- AI scoring system (0-10) for relevance ranking
- REST API for sources, votes, and search
- Concurrent async fetching from multiple source types
- Configuration via .env and config.json files
- Live community statistics (312+ contributors)
- Signal-over-noise filtering through human votes
- Source contribution and voting mechanism
- Category-based news filtering (general, AI/ML, security, etc.)
- Self-hosted deployment option
About Horizon
Horizon is an open-source, AI-powered news aggregation and summarization platform designed for developers, researchers, and tech enthusiasts who want to stay informed without the noise. It automatically fetches articles from a curated set of tech sources, scores them using an AI model, and delivers a daily briefing that highlights the most important stories. The platform is built around community-driven curation: users can contribute sources, vote on content quality, and shape the feed collectively. With over 312 active contributors and 7.9K GitHub stars, Horizon combines algorithmic filtering with human signal to surface relevant news in general tech, AI/ML, security, programming languages, and more. Horizon is configured using two files: a .env file for API keys and a data/config.json file for sources, AI provider, and filtering options. After fetching content from all sources, the AI scores each item on a 0-10 scale to determine what appears in the daily summary. Sources are fetched concurrently via asyncio.gather. What makes Horizon different is its fully open-source nature, community-driven source curation, and bilingual support (English & Chinese). It files itself as an 'information source marketplace' for the Horizon ecosystem, driven by real usage data for discovery and quality assessment.
Behind the Verdict
Horizon stands out as a fully open-source news aggregator that gives you control over sources, scoring, and delivery. The community aspect—312+ contributors voting on sources—adds a real signal layer that pure algorithmic feeds lack. Setup is straightforward if you're comfortable with .env and config.json files, and the REST API makes it easy to integrate into your own workflows. The bilingual (English & Chinese) briefings are a nice touch for international teams. Weaknesses: the site is a bit bare-bones—no mobile app, no push notifications, and the documentation, while clear, assumes technical proficiency. The AI model for scoring is configurable but not named, so performance depends on your chosen provider. Categories like Embedded & Hardware currently have zero sources, so coverage is uneven. Overall, Horizon is best for tinkerers and developers who want a self-hosted, community-shaped news feed. Non-technical users or those wanting a polished app should look elsewhere.
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Real-world workflow fit
Concrete scenarios for the personas Horizon actually fits — and what changes day-one when you adopt it.
You clone the Horizon repository, configure a .env with your OpenAI API key, edit config.json to select sources from the community list, and run the aggregator. The daily briefing is generated and accessible via REST API.
Outcome: Within 30 minutes, you have a daily AI-filtered tech news feed you can customize further.
You deploy Horizon on a small cloud server, add team-specific sources to config.json, and set up a cron job to run the scraper daily. You use the REST API to pull the top scored stories and format them into an internal email.
Outcome: Your team receives a daily AI-summarized newsletter with minimal manual effort.
You notice a gap in the Linux security news category. You contribute a new source by submitting a pull request with a scraper class. Once merged, the source becomes available to the community.
Outcome: Your contribution increases the community source count and improves coverage for all users.
Use Cases
- Set up a daily automated briefing in English and Chinese for your team's preferred tech topics.
- Contribute new sources to Horizon to improve community coverage in niche tech areas.
- Use the REST API to pull scored news items into your own dashboard or research pipeline.
- Deploy Horizon as a self-hosted news aggregator with custom AI scoring for internal monitoring.
- Vote on news items to influence the collective signal-to-noise ratio for all users.
- Analyze the open-source scrapers to extend Horizon to additional content types.
Limitations
- Horizon requires manual setup of a .env file and config.json, which may be a barrier for non-technical users.
- The AI scoring model and provider are configurable but not explicitly named, so performance may vary.
- Community curation is still growing, so coverage in some tech categories (like Embedded & Hardware) is currently zero.
- There is no mobile app or push notification support.
as of 2026-07-06
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Horizon tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0/mo
Ideal for
Solo developer or hobbyist who wants a self-hosted, open-source news aggregator without any subscription fees.
What this tier adds
Free tier is fully open-source with no paid upgrades; you only pay for your own infrastructure and AI API usage.
Where the pricing makes sense
The company stage and team size where Horizon's pricing actually pencils out — and where peers do it cheaper.
Horizon is free and open-source, making it ideal for individual developers and small teams who want full control over their news aggregation without per-seat fees. Unlike Feedly Pro ($8/mo or more) or Inoreader's paid plans, Horizon's only cost is your own infrastructure and AI API usage.
Setup time & first value
How long it actually takes to get something useful out of Horizon — broken out by persona, not the marketing-page minute.
For a developer familiar with Python and git, setting up Horizon takes about 15-30 minutes: cloning the repo, installing dependencies, configuring .env and config.json, and running the initial fetch. Non-technical users may need an hour or more to get familiar with the configuration.
Switching to or from Horizon
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From Feedly: Export your OPML subscription list and import it into config.json as custom sources (requires manual mapping).
- →From Inoreader: Similar OPML import or manually add sources via Horizon's config file.
- ↗To Feedly: Manually recreate your Horizon sources in Feedly (no automatic export tool).
- ↗To Inoreader: Similar manual recreation or use OPML export from Horizon if you have your source list.
Resources & Guides
Official links
Tools that pair well with Horizon
Common stack mates teams adopt alongside Horizon, with the specific reason each pairing earns its keep.
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