How to Monitor Competitors on Reddit, Hacker News, and Product Hunt Automatically

Most competitor monitoring advice focuses on the wrong places. It tells you to track press releases, monitor blog updates, set up Google Alerts. All useful, all secondary.

The conversations that actually affect your business — the ones where users recommend alternatives, where founders announce launches, where communities decide what tools are worth trying — happen in three places: Reddit, Hacker News, and Product Hunt.

And most founders either miss them entirely or check manually in a way that's slow, inconsistent, and inevitably falls apart during the weeks they're most heads-down.

This guide covers how these three platforms work for competitive intelligence, what to actually monitor on each, and how to stop doing it manually.

Why These Three Platforms Matter More Than Press Coverage

Reddit: where users are honest

Reddit has over 430 million monthly active users across 100,000+ communities. More relevantly for founders: it's one of the few places on the internet where people talk about software products with genuine candour.

When someone asks "what's the best tool for X?" on r/SaaS or r/Entrepreneur or r/solopreneur, they're not writing a review for a publication. They're asking their community, and the answers reflect actual experience. These threads are often where a competitor's reputation is made or broken before any press coverage exists.

The competitive intelligence in these threads is real: which alternatives keep getting recommended, which products people are switching away from, which pain points keep appearing in multiple threads. If your competitor is getting mentioned in these conversations and you're not, that's a positioning problem you can fix — but only if you know about it.

Hacker News: the technical launch signal

Hacker News' "Show HN" section is the standard publishing channel for technical founders launching products. When a developer or technical founder builds something in your space, Show HN is often the first public announcement.

These posts typically appear weeks or months before a Product Hunt launch. They're early signals: the product is real, it has a team behind it, and it's entering your market. The comments on a Show HN post are often the most honest technical assessment a product will ever receive.

Monitoring Show HN for your market keywords is as close as you can get to finding competitors at the moment of birth.

Product Hunt: the launch moment

Product Hunt is where consumer SaaS and productivity products make their biggest single-day push for visibility. A top 5 Product Hunt launch can drive thousands of signups in one day.

For competitive monitoring, Product Hunt is useful in two ways. First, it's where you find out a competitor launched — often alongside 200-800 upvotes and a flood of early adopter signups that already happened before you knew about it. Second, the categories and related products surface adjacent tools and new entrants in your space daily.

If you're not watching Product Hunt launches in your category, you're regularly finding out about competitors after the damage is done.

What to Actually Monitor on Each Platform

Reddit monitoring: what to watch

Subreddits by category: The subreddits that matter depend on your market, but some consistently relevant ones for SaaS founders:

r/SaaS — product launches, tool recommendations, founder discussions
r/Entrepreneur — broader business tools, frequently referenced alternatives
r/startups — funding announcements, new company mentions
r/nocode, r/webdev, r/devops — category-specific depending on your space
Category-specific subreddits (e.g. r/projectmanagement, r/marketing, r/productivity)

Keywords to track:

Your competitors' names and product names
Your own product name (for comparative mentions)
Category keywords: "best tool for X", "alternative to Y", "switched from Z"
Pain-point phrases specific to your market
"I built" and "just launched" for discovery

What high-value Reddit signals look like:

A thread asking for alternatives to your competitors
A comparison thread that mentions your category
A complaint about a competitor's pricing or missing feature
A "just launched" post from a new product in your space

Hacker News: what to watch

Show HN posts: Set up monitoring for "Show HN" combined with your category keywords. These posts go live and accumulate comments quickly — within 24 hours, you'll know whether a launch got traction or flopped.

Ask HN and general discussion: "Ask HN: What do you use for X?" threads are gold. They surface the tools your target audience uses, including ones you've never heard of.

Comment monitoring: This is harder to do manually but important. Competitor mentions often appear in comments on threads about adjacent topics — not in threads about your category specifically.

Product Hunt: what to watch

Category monitoring: Product Hunt has categories and related collections. New launches in your category appear daily. Even if only one in twenty is directly relevant, that one matters.

Keyword monitoring for taglines and descriptions: A new product that uses the same problem-space language as you is a potential competitor even if it doesn't show up in your category.

Upvote velocity: A new launch hitting 100+ upvotes in the first few hours is gaining real traction. You want to know about this before it hits 500.

The Manual Approach — And Why It Fails

The manual version of this looks like: open Reddit, search your keywords, check a few subreddits, go to Hacker News newest/Show HN, scan Product Hunt new launches, repeat daily.

This works for about two weeks. Then:

A busy sprint happens and you skip two days
You search the keywords you think to search, miss the ones you didn't think of
The relevant thread gets posted at 11pm and by morning is on page 2
You catch up on Product Hunt weekly and find that the launch you care about happened six days ago and now has 400 upvotes

The manual approach doesn't fail because founders are lazy. It fails because it requires consistent, regular attention at the exact moments when founders are most likely to be heads-down.

The other problem: manual searching only surfaces what you search for. The competitor whose tagline doesn't contain your exact keyword. The Show HN post that describes your market with different words. The Reddit comment that mentions your competitor three levels deep in a thread about something else. Manual checking misses these by definition.

The Automated Approach

What automation looks like

The goal is to replace manual checking with a system that:

Continuously scans Reddit, Hacker News, and Product Hunt
Filters results for relevance (so you're not reading every post that contains a common word)
Alerts you via Slack or email when something worth seeing appears
Does this in near-real-time, not in a 24-hour batch

Options for automating Reddit monitoring

F5Bot (free): Keyword tracking for Reddit and Hacker News, email alerts. No Slack, no filtering, no Product Hunt — but free and covers the basics.

Syften (~$15/month): More refined Reddit monitoring with filtering options. Better than F5Bot for reducing noise, but Reddit-only.

Octolens ($19/month): Covers Reddit, HN, Product Hunt, Twitter, LinkedIn, and GitHub. AI relevance scoring, Slack alerts. Good coverage for the price.

Spire21 ($49/month): Same platform coverage as Octolens plus one thing none of the others do: automatic competitor discovery. Spire21 doesn't just alert you when known competitors are mentioned — it scans Product Hunt launches and Show HN posts for new products entering your market space, scores them by relevance, and alerts you about competitors you didn't know to monitor yet.

Setting up a basic automated stack

If you want to start today without paying anything:

F5Bot — add your competitor names, product keywords, and category terms. You'll get email alerts for Reddit and HN mentions.
Product Hunt email digest — subscribe to the Product Hunt daily digest for your categories. Not real-time, but covers launches.

If you want to move to a single paid tool that handles everything:

Add your known competitors by name and URL
Set monitoring keywords for your market space (the problems you solve, not just competitor names)
Connect Slack so alerts land where you already work
Set up a discovery category so the tool watches for new entrants — not just known ones

The difference between a good setup and a mediocre one isn't the tool — it's the keyword list. The founders who get the most value from monitoring tools are the ones who think carefully about all the ways people describe their market, not just the obvious brand name searches.

What to Do When You Get an Alert

Getting the alert is the easy part. Here's what's actually useful to do with it:

A competitor mention in a Reddit thread: Read the context. Is it a recommendation or a complaint? Who's asking, and what problem are they trying to solve? If it's a comparison thread, check what alternatives are being mentioned alongside your competitor. This is positioning intelligence.

A new Show HN post: Click through and read the description and comments. What problem are they solving? What's their angle? What are the HN commenters saying about the gaps? You don't need to do anything immediately — just know it exists and file it.

A Product Hunt launch: Check the upvote count and trajectory. Read the tagline and feature list. Look at what the comments are praising and questioning. If it's directly competitive, add it to your monitoring list. If it's adjacent, bookmark it.

The point of monitoring isn't to react to everything. It's to stay calibrated — to have an accurate, current picture of your market so that nothing comes as a surprise.

Frequently Asked Questions

How do I track competitors on Reddit for free?

F5Bot is the best free option. It monitors Reddit and Hacker News for your keywords and sends email alerts. Set up alerts for your competitors' names, product keywords, and category terms. The limitation is email-only alerts and no filtering — you'll get everything that matches, relevant or not.

Can I get Slack alerts for Reddit competitor mentions?

Yes. Tools like Syften, Octolens, and Spire21 integrate with Slack and can push Reddit mentions (and mentions from other platforms) directly to a channel. This is more useful than email for real-time awareness since you're already in Slack.

How do I monitor Product Hunt for new competitors?

The simplest option: subscribe to the Product Hunt daily digest for your categories. For real-time monitoring with alerting: Octolens and Spire21 both cover Product Hunt launches and can alert you when new products in your keywords launch.

What subreddits should I monitor for competitor tracking?

Start with r/SaaS, r/Entrepreneur, r/startups, and any category-specific subreddits relevant to your market. Then add keyword monitoring across all of Reddit rather than just specific subreddits — many relevant conversations happen in unexpected communities.

How often should I check for competitor mentions?

You shouldn't be checking at all — that's the point of automation. Set up keyword alerts that push to Slack or email and review them once in the morning. With good filtering, you'll see 2-10 relevant items per day rather than spending 30-45 minutes manually checking platforms.